feat: Add problem tracking feature

This commit introduces a new `Problem` model, analogous to `Crop`, to allow users to track problems they have on their plantings (e.g., aphids on tomatoes).

Key features:
- A new `Problem` model that can be curated by admins (`problem_wranglers`).
- Users can associate problems with their plantings and upload photos of the problems.
- Aggregated problem information is displayed on the crop detail page (e.g., "Problems: aphids (27), blight (13)").
- Users can mention problems in posts (e.g., `[aphids](problem)`), which automatically links to the problem's page.
- Admin functionality for reviewing and approving new problem suggestions.

Resolves merge conflict in app/controllers/plantings_controller.rb

Gemfile.lock

@@ -33,29 +33,29 @@ GEM
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actioncable (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
       zeitwerk (~> 2.6)
-    actionmailbox (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      activejob (= 7.2.2.2)
-      activerecord (= 7.2.2.2)
-      activestorage (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actionmailbox (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      activejob (= 7.2.2.1)
+      activerecord (= 7.2.2.1)
+      activestorage (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       mail (>= 2.8.0)
-    actionmailer (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      actionview (= 7.2.2.2)
-      activejob (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actionmailer (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      actionview (= 7.2.2.1)
+      activejob (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       mail (>= 2.8.0)
       rails-dom-testing (~> 2.2)
-    actionpack (7.2.2.2)
-      actionview (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actionpack (7.2.2.1)
+      actionview (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       nokogiri (>= 1.8.5)
       racc
       rack (>= 2.2.4, < 3.2)
@@ -64,15 +64,15 @@ GEM
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
       useragent (~> 0.16)
-    actiontext (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      activerecord (= 7.2.2.2)
-      activestorage (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actiontext (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      activerecord (= 7.2.2.1)
+      activestorage (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       globalid (>= 0.6.0)
       nokogiri (>= 1.8.5)
-    actionview (7.2.2.2)
-      activesupport (= 7.2.2.2)
+    actionview (7.2.2.1)
+      activesupport (= 7.2.2.1)
       builder (~> 3.1)
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
@@ -87,22 +87,22 @@ GEM
     active_utils (3.5.0)
       activesupport (>= 4.2)
       i18n
-    activejob (7.2.2.2)
-      activesupport (= 7.2.2.2)
+    activejob (7.2.2.1)
+      activesupport (= 7.2.2.1)
       globalid (>= 0.3.6)
-    activemodel (7.2.2.2)
-      activesupport (= 7.2.2.2)
-    activerecord (7.2.2.2)
-      activemodel (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    activemodel (7.2.2.1)
+      activesupport (= 7.2.2.1)
+    activerecord (7.2.2.1)
+      activemodel (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       timeout (>= 0.4.0)
-    activestorage (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      activejob (= 7.2.2.2)
-      activerecord (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    activestorage (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      activejob (= 7.2.2.1)
+      activerecord (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       marcel (~> 1.0)
-    activesupport (7.2.2.2)
+    activesupport (7.2.2.1)
       base64
       benchmark (>= 0.3)
       bigdecimal
@@ -251,7 +251,7 @@ GEM
     elasticsearch-transport (7.0.0)
       faraday
       multi_json
-    erb (5.0.2)
+    erb (5.0.1)
     erubi (1.13.1)
     erubis (2.7.0)
     excon (1.2.5)
@@ -351,7 +351,7 @@ GEM
     image_processing (1.12.2)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
-    io-console (0.8.1)
+    io-console (0.8.0)
     irb (1.15.2)
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
@@ -423,14 +423,14 @@ GEM
       bigdecimal (~> 3.1)
     net-http (0.6.0)
       uri
-    net-imap (0.5.9)
+    net-imap (0.4.20)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
     net-protocol (0.2.2)
       timeout
-    net-smtp (0.5.1)
+    net-smtp (0.5.0)
       net-protocol
     netrc (0.11.0)
     nio4r (2.7.4)
@@ -499,20 +499,20 @@ GEM
     rackup (1.0.1)
       rack (< 3)
       webrick
-    rails (7.2.2.2)
-      actioncable (= 7.2.2.2)
-      actionmailbox (= 7.2.2.2)
-      actionmailer (= 7.2.2.2)
-      actionpack (= 7.2.2.2)
-      actiontext (= 7.2.2.2)
-      actionview (= 7.2.2.2)
-      activejob (= 7.2.2.2)
-      activemodel (= 7.2.2.2)
-      activerecord (= 7.2.2.2)
-      activestorage (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    rails (7.2.2.1)
+      actioncable (= 7.2.2.1)
+      actionmailbox (= 7.2.2.1)
+      actionmailer (= 7.2.2.1)
+      actionpack (= 7.2.2.1)
+      actiontext (= 7.2.2.1)
+      actionview (= 7.2.2.1)
+      activejob (= 7.2.2.1)
+      activemodel (= 7.2.2.1)
+      activerecord (= 7.2.2.1)
+      activestorage (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       bundler (>= 1.15.0)
-      railties (= 7.2.2.2)
+      railties (= 7.2.2.1)
     rails-controller-testing (1.0.5)
       actionpack (>= 5.0.1.rc1)
       actionview (>= 5.0.1.rc1)
@@ -532,9 +532,9 @@ GEM
       rails_stdout_logging
     rails_serve_static_assets (0.0.5)
     rails_stdout_logging (0.0.5)
-    railties (7.2.2.2)
-      actionpack (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    railties (7.2.2.1)
+      actionpack (= 7.2.2.1)
+      activesupport (= 7.2.2.1)
       irb (~> 1.13)
       rackup (>= 1.0.0)
       rake (>= 12.2)
@@ -553,8 +553,8 @@ GEM
     recaptcha (5.20.1)
     redis-client (0.23.2)
       connection_pool
-    regexp_parser (2.11.2)
-    reline (0.6.2)
+    regexp_parser (2.11.1)
+    reline (0.6.1)
       io-console (~> 0.5)
     responders (3.1.1)
       actionpack (>= 5.2)
@@ -582,7 +582,7 @@ GEM
     rspec-mocks (3.13.5)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-rails (8.0.2)
+    rspec-rails (8.0.1)
       actionpack (>= 7.2)
       activesupport (>= 7.2)
       railties (>= 7.2)
@@ -628,7 +628,7 @@ GEM
     rubocop-factory_bot (2.27.1)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    rubocop-rails (2.33.3)
+    rubocop-rails (2.32.0)
       activesupport (>= 4.2.0)
       lint_roller (~> 1.1)
       rack (>= 1.1)
@@ -648,7 +648,7 @@ GEM
     ruby-units (4.1.0)
     ruby-vips (2.2.1)
       ffi (~> 1.12)
-    rubyzip (3.0.1)
+    rubyzip (2.4.1)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -668,11 +668,11 @@ GEM
       activemodel (>= 6.1)
       hashie
     securerandom (0.4.1)
-    selenium-webdriver (4.35.0)
+    selenium-webdriver (4.34.0)
       base64 (~> 0.2)
       logger (~> 1.4)
       rexml (~> 3.2, >= 3.2.5)
-      rubyzip (>= 1.2.2, < 4.0)
+      rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
     sidekiq (7.3.9)
       base64
@@ -730,8 +730,7 @@ GEM
       rack-test (>= 0.5.3)
     webrick (1.9.1)
     websocket (1.2.11)
-    websocket-driver (0.8.0)
-      base64
+    websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     will_paginate (4.0.1)

app/controllers/application_controller.rb

@@ -78,7 +78,6 @@ class ApplicationController < ActionController::Base
                     :tos_agreement,
                     # profile stuff
                     :bio, :location, :latitude, :longitude,
-                    :website_url, :instagram_handle, :facebook_handle, :bluesky_handle, :other_url,
                     # email settings
                     :show_email, :newsletter, :send_notification_email, :send_planting_reminder,
                     # update password

app/controllers/crops_controller.rb

@@ -75,6 +75,7 @@ class CropsController < ApplicationController
   end
 
   def show
+    @problems = Problem.joins(plantings: :crop).where(crops: { id: @crop.id }).distinct
     respond_to do |format|
       format.html do
         @posts = @crop.posts.order(created_at: :desc).paginate(page: params[:page])

app/controllers/plantings_controller.rb

@@ -107,7 +107,7 @@ class PlantingsController < DataController
       :crop_id, :description, :garden_id, :planted_at,
       :parent_seed_id,
       :quantity, :sunniness, :planted_from, :finished,
-      :finished_at
+      :finished_at, :failed, problem_ids: []
     )
   end
 

app/controllers/problems_controller.rb

@@ -0,0 +1,76 @@
+# frozen_string_literal: true
+
+class ProblemsController < ApplicationController
+  before_action :authenticate_member!, except: %i(index show)
+  load_and_authorize_resource id_param: :slug, class: Problem
+  respond_to :html, :json
+
+  def index
+    @problems = Problem.approved.popular.paginate(page: params[:page])
+    @num_requested_problems = requested_problems.size if current_member
+    respond_with @problems
+  end
+
+  def requested
+    @requested = requested_problems.paginate(page: params[:page])
+    respond_with @requested
+  end
+
+  def show
+    @problem = Problem.friendly.find(params[:id])
+    @plantings = @problem.plantings.paginate(page: params[:page])
+    respond_with @problem
+  end
+
+  def new
+    @problem = Problem.new
+    respond_with @problem
+  end
+
+  def edit; end
+
+  def create
+    @problem = Problem.new(problem_params)
+    if current_member.role? :problem_wrangler
+      @problem.creator = current_member
+    else
+      @problem.requester = current_member
+      @problem.approval_status = "pending"
+    end
+    @problem.save
+    respond_with @problem
+  end
+
+  def update
+    if can?(:wrangle, @problem)
+      @problem.approval_status = 'rejected' if params.fetch("reject", false)
+      @problem.approval_status = 'approved' if params.fetch("approve", false)
+    end
+    @problem.update(problem_params)
+    respond_with @problem
+  end
+
+  def wrangle
+    @approval_status = params[:approval_status]
+    @problems = case @approval_status
+                when "pending"
+                  Problem.pending_approval
+                when "rejected"
+                  Problem.rejected
+                else
+                  Problem.recent
+                end.paginate(page: params[:page])
+    @problem_wranglers = Role.problem_wranglers
+    respond_with @problems
+  end
+
+  private
+
+  def problem_params
+    params.require(:problem).permit(:name, :reason_for_rejection, :rejection_notes)
+  end
+
+  def requested_problems
+    current_member.requested_problems.pending_approval
+  end
+end

app/helpers/application_helper.rb

@@ -32,7 +32,7 @@ module ApplicationHelper
   # of HAML, Tilt, and dynamic compilation with interpolated ruby.
   def markdownify(text)
     translator = Haml::Filters::GrowstuffMarkdown.new
-    translator.expand_members!(translator.expand_crops!(text.to_s))
+    translator.expand_members!(translator.expand_problems!(translator.expand_crops!(text.to_s)))
   end
 
   #

app/models/ability.rb

@@ -34,6 +34,8 @@ class Ability
     # are wranglers or admins
     cannot :read, Crop
     can :read, Crop, approval_status: "approved"
+    cannot :read, Problem
+    can :read, Problem, approval_status: "approved"
     # scientific names should only be viewable if associated crop is approved
     cannot :read, ScientificName
     can :read, ScientificName do |sn|
@@ -56,6 +58,8 @@ class Ability
     # members can see even rejected or pending crops if they requested it
     can :read, Crop, requester_id: member.id
     can :requested, Crop # see list of crops they've requested
+    can :read, Problem, requester_id: member.id
+    can :requested, Problem
 
     # managing your own user settings
     can :update, Member, id: member.id
@@ -82,8 +86,14 @@ class Ability
       can :gbif, Crop
     end
 
+    if member.role? :problem_wrangler
+      can :wrangle, Problem
+      can :manage, Problem
+    end
+
     # any member can create a crop provisionally
     can :create, Crop
+    can :create, Problem
 
     # can create & destroy their own authentications against other sites.
     can :create, Authentication

app/models/crop.rb

@@ -17,6 +17,7 @@ class Crop < ApplicationRecord
   has_many :scientific_names, dependent: :delete_all
   has_many :alternate_names, dependent: :delete_all
   has_many :plantings, dependent: :destroy
+  has_many :problems, through: :plantings
   has_many :seeds, dependent: :destroy
   has_many :harvests, dependent: :destroy
   has_many :photo_associations, dependent: :delete_all, inverse_of: :crop

app/models/member.rb

@@ -42,6 +42,10 @@ class Member < ApplicationRecord
                              inverse_of: :requester
   has_many :created_crops, class_name: 'Crop', foreign_key: 'creator_id', dependent: :nullify,
                            inverse_of: :creator
+  has_many :requested_problems, class_name: 'Problem', foreign_key: 'requester_id', dependent: :nullify,
+                                inverse_of: :requester
+  has_many :created_problems, class_name: 'Problem', foreign_key: 'creator_id', dependent: :nullify,
+                              inverse_of: :creator
   has_many :created_alternate_names, class_name: 'AlternateName', foreign_key: 'creator_id', inverse_of: :creator
   has_many :created_scientific_names, class_name: 'ScientificName', foreign_key: 'creator_id', inverse_of: :creator
 
@@ -91,9 +95,6 @@ class Member < ApplicationRecord
             uniqueness: {
               case_sensitive: false
             }
-  validates :website_url, format: { with: /\Ahttps?:\/\//, message: "must start with http:// or https://" }, allow_blank: true
-  validates :other_url, format: { with: /\Ahttps?:\/\//, message: "must start with http:// or https://" }, allow_blank: true
-  validates :instagram_handle, :facebook_handle, :bluesky_handle, format: { without: %r{\Ahttps?:\/\/|\/}, message: "should be a handle, not a URL" }, allow_blank: true
 
   #
   # Triggers

app/models/planting.rb

@@ -24,6 +24,8 @@ class Planting < ApplicationRecord
   belongs_to :crop, counter_cache: true
   has_many :harvests, dependent: :destroy
   has_many :activities, dependent: :destroy
+  has_many :planting_problems, dependent: :destroy
+  has_many :problems, through: :planting_problems
 
   #
   # Ancestry of food

app/models/planting_problem.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class PlantingProblem < ApplicationRecord
+  include PhotoCapable
+
+  belongs_to :planting
+  belongs_to :problem
+end

app/models/post.rb

@@ -13,11 +13,14 @@ class Post < ApplicationRecord
   has_many :comments, dependent: :destroy
   has_many :crop_posts, dependent: :delete_all
   has_many :crops, through: :crop_posts
+  has_many :problem_posts, dependent: :delete_all
+  has_many :problems, through: :problem_posts
 
   after_create :send_notification
   #
   # Triggers
   after_save :update_crop_posts_association
+  after_save :update_problem_posts_association
 
   default_scope { joins(:author).merge(Member.kept) } # Ensures the owner still exists
 
@@ -75,6 +78,17 @@ class Post < ApplicationRecord
     end
   end
 
+  def update_problem_posts_association
+    problems.clear
+    # look for problems mentioned in the post. eg. [aphids](problem)
+    body.scan(Haml::Filters::GrowstuffMarkdown::PROBLEM_REGEX) do |_m|
+      problem_name = Regexp.last_match(1)
+      problem = Problem.case_insensitive_name(problem_name).first
+      # create association
+      problems << problem if problem && problems.exclude?(problem)
+    end
+  end
+
   def send_notification
     recipients = []
     sender = author.id

app/models/problem.rb

@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+class Problem < ApplicationRecord
+  extend FriendlyId
+  include PhotoCapable
+  include SearchCrops # Note: This might need to be adapted to SearchProblems
+
+  friendly_id :name, use: %i(slugged finders)
+
+  ##
+  ## Relationships
+  belongs_to :creator, class_name: 'Member', optional: true, inverse_of: :created_problems
+  belongs_to :requester, class_name: 'Member', optional: true, inverse_of: :requested_problems
+  has_many :planting_problems, dependent: :delete_all
+  has_many :plantings, through: :planting_problems
+  has_many :problem_posts, dependent: :delete_all
+  has_many :posts, through: :problem_posts, dependent: :delete_all
+
+  ##
+  ## Scopes
+  scope :recent, -> { approved.order(created_at: :desc) }
+  scope :popular, -> { approved.order(Arel.sql("plantings_count desc, lower(name) asc")) }
+  scope :pending_approval, -> { where(approval_status: "pending") }
+  scope :approved, -> { where(approval_status: "approved") }
+  scope :rejected, -> { where(approval_status: "rejected") }
+  scope :interesting, -> { approved.has_photos }
+  scope :has_photos, -> { includes(:photos).where.not(photos: { id: nil }) }
+
+  ##
+  ## Validations
+  validates :reason_for_rejection, presence: true, if: :rejected?
+  validate :must_be_rejected_if_rejected_reasons_present
+  validate :must_have_meaningful_reason_for_rejection
+  validates :name, uniqueness: { scope: :approval_status }, if: :pending?
+
+  def to_s
+    name
+  end
+
+  def to_param
+    slug
+  end
+
+  def pending?
+    approval_status == "pending"
+  end
+
+  def approved?
+    approval_status == "approved"
+  end
+
+  def rejected?
+    approval_status == "rejected"
+  end
+
+  def approval_statuses
+    %w(rejected pending approved)
+  end
+
+  def reasons_for_rejection
+    ["already in database", "not a pest or disease", "not enough information", "other"]
+  end
+
+  def rejection_explanation
+    return rejection_notes if reason_for_rejection == "other"
+
+    reason_for_rejection
+  end
+
+  def self.case_insensitive_name(name)
+    where(["lower(problems.name) = :value", { value: name.downcase }])
+  end
+
+  private
+
+  def must_be_rejected_if_rejected_reasons_present
+    return if rejected?
+    return unless reason_for_rejection.present? || rejection_notes.present?
+
+    errors.add(:approval_status, "must be rejected if a reason for rejection is present")
+  end
+
+  def must_have_meaningful_reason_for_rejection
+    return unless reason_for_rejection == "other" && rejection_notes.blank?
+
+    errors.add(:rejection_notes, "must be added if the reason for rejection is \"other\"")
+  end
+end

app/models/problem_post.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+class ProblemPost < ApplicationRecord
+  belongs_to :problem
+  belongs_to :post
+end

app/models/role.rb

@@ -8,7 +8,7 @@ class Role < ApplicationRecord
   has_and_belongs_to_many :members
 
   class << self
-    %i(crop_wranglers admins).each do |method|
+    %i(crop_wranglers admins problem_wranglers).each do |method|
       define_method method do
         slug = method.to_s.singularize.dasherize
         Role.where(slug:).try(:first).try(:members)

app/views/crops/_planting_advice.html.haml

@@ -3,4 +3,3 @@
     There are
     = link_to "https://openfarm.cc/en/crops/#{CGI.escape @crop.name.gsub(' ', '-').downcase}" do
       #{crop.guides_count} growing guides on Open Farm
-

app/views/crops/show.html.haml

@@ -30,6 +30,15 @@
         - @crop.companions.each do |companion|
           = render 'crops/tiny', crop: companion
 
+    - if @problems.any?
+      %section.problems
+        %h2 Problems
+        - @problems.group_by(&:name).each do |problem_name, problems|
+          - problem = problems.first
+          = link_to problem_path(problem) do
+            = problem_name
+            %span.badge.badge-secondary= problems.size
+
     %section.photos
       = cute_icon
       = render 'crops/photos', crop: @crop

app/views/devise/registrations/_edit_profile.html.haml

@@ -13,32 +13,7 @@
   .form-group
     = f.label :bio, class: 'control-label col-md-2'
     .col-md-8
-      = f.text_area :bio, rows: 6, class: 'form-control', placeholder: "I'm am XYZ gardener interested in A, B, C"
-
-  .form-group
-    = f.label :website_url, 'Website', class: 'control-label col-md-2'
-    .col-md-8
-      = f.url_field :website_url, class: 'form-control', placeholder: "https://you.example.com/"
-
-  .form-group
-    = f.label :instagram_handle, 'Instagram', class: 'control-label col-md-2'
-    .col-md-8
-      = f.text_field :instagram_handle, class: 'form-control', placeholder: 'your_handle'
-
-  .form-group
-    = f.label :facebook_handle, 'Facebook', class: 'control-label col-md-2'
-    .col-md-8
-      = f.text_field :facebook_handle, class: 'form-control', placeholder: 'your_handle'
-
-  .form-group
-    = f.label :bluesky_handle, 'Bluesky', class: 'control-label col-md-2'
-    .col-md-8
-      = f.text_field :bluesky_handle, class: 'form-control', placeholder: 'your_handle'
-
-  .form-group
-    = f.label :other_url, 'Other URL', class: 'control-label col-md-2'
-    .col-md-8
-      = f.url_field :other_url, class: 'form-control', placeholder: "https://you.example.com/"
+      = f.text_area :bio, rows: 6, class: 'form-control'
 
   .form-group
     %label.control-label.col-md-2

app/views/home/_stats.html.haml

@@ -5,5 +5,3 @@
      number_crops: link_to(t('.number_crops_linktext', count: Crop.count.to_i), crops_path),
      number_plantings: link_to(t('.number_plantings_linktext', count: Planting.count.to_i), plantings_path),
      number_gardens: link_to(t('.number_gardens_linktext', count: Garden.count.to_i), gardens_path))
-
-

app/views/layouts/_header.html.haml

@@ -6,6 +6,6 @@
         %span.site-name Growstuff
   .nav= render 'crops/search_bar'
   .nav
-    %button.navbar-toggler{ "aria-controls" => "offcanvasNavbar", "aria-label" => "Toggle navigation", "data-bs-target" => "#offcanvasNavbar", "data-bs-toggle" => "offcanvas", type: "button" }
+    %button.navbar-toggler{ "aria-controls" => "navbarSupportedContent", "aria-expanded" => "false", "aria-label" => "Toggle navigation", "data-bs-target" => "#navbarSupportedContent", "data-bs-toggle" => "collapse", type: "button" }
       %i.fas.fa-ellipsis-v.navbar-toggler-icon
     = render 'layouts/menu'

app/views/layouts/_menu.haml

@@ -1,102 +1,98 @@
-.offcanvas.offcanvas-start#offcanvasNavbar{ 'aria-labelledby' => 'offcanvasNavbarLabel', 'tabindex' => '-1' }
-  .offcanvas-header
-    %h5.offcanvas-title#offcanvasNavbarLabel Menu
-    %button.btn-close.text-reset{ 'data-bs-dismiss' => 'offcanvas', 'aria-label' => 'Close' }
-  .offcanvas-body
-    %ul.navbar-nav.mr-auto
-      - if signed_in?
-        %li.nav-item
-          = link_to timeline_index_path, method: :get, class: 'nav-link' do
-            = image_tag 'icons/notification.svg', class: 'img img-icon', alt: "Notifications"
-        %li.nav-item
-          = link_to member_gardens_path(current_member), class: 'nav-link', title: "My gardens" do
-            = image_icon 'gardens'
-        %li.nav-item.dropdown
-          %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}
-            = image_tag "icons/gardener.svg", class: 'img img-icon', alt: t('.record'), aria: { hidden: "true" }
-            = t('.record')
-          .dropdown-menu
-            = link_to new_planting_path, class: 'dropdown-item' do
-              = image_icon('planting-add')
-              = t('buttons.new_planting')
-            = link_to new_harvest_path, class: 'dropdown-item' do
-              = image_icon('harvest-add')
-              = t('buttons.new_harvest')
-            = link_to new_activity_path, class: 'dropdown-item' do
-              = image_icon('activity-add')
-              = t('buttons.new_activity')
-            = link_to new_seed_path, class: 'dropdown-item' do
-              = image_icon('seed-add')
-              = t('buttons.new_seeds')
-            = link_to new_post_path, class: 'dropdown-item' do
-              = post_icon
-              = t('buttons.new_post')
+#navbarSupportedContent.collapse.navbar-collapse
+  %ul.navbar-nav.mr-auto
+    - if signed_in?
+      %li.nav-item
+        = link_to timeline_index_path, method: :get, class: 'nav-link text-white' do
+          = image_tag 'icons/notification.svg', class: 'img img-icon', alt: "Notifications"
+      %li.nav-item
+        = link_to member_gardens_path(current_member), class: 'nav-link text-white', title: "My gardens" do
+          = image_icon 'gardens'
+      %li.nav-item.dropdown
+        %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}
+          = image_tag "icons/gardener.svg", class: 'img img-icon', alt: t('.record'), aria: { hidden: "true" }
+          = t('.record')
+        .dropdown-menu
+          = link_to new_planting_path, class: 'dropdown-item' do
+            = image_icon('planting-add')
+            = t('buttons.new_planting')
+          = link_to new_harvest_path, class: 'dropdown-item' do
+            = image_icon('harvest-add')
+            = t('buttons.new_harvest')
+          = link_to new_activity_path, class: 'dropdown-item' do
+            = image_icon('activity-add')
+            = t('buttons.new_activity')
+          = link_to new_seed_path, class: 'dropdown-item' do
+            = image_icon('seed-add')
+            = t('buttons.new_seeds')
+          = link_to new_post_path, class: 'dropdown-item' do
+            = post_icon
+            = t('buttons.new_post')
 
-      - cache("everyone-menu", expires_in: 1.week) do
+    - cache("everyone-menu", expires_in: 1.week) do
+      %li.nav-item.dropdown
+        %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.crops')
+        .dropdown-menu
+          = link_to crops_path, class: 'dropdown-item' do
+            = t('.browse_crops')
+          = link_to seeds_path, class: 'dropdown-item' do
+            = seed_icon
+            = t('.seeds')
+          = link_to plantings_path, class: 'dropdown-item' do
+            = planting_icon
+            = t('.plantings')
+          = link_to harvests_path, class: 'dropdown-item' do
+            = harvest_icon
+            = t('.harvests')
+      %li.nav-item.dropdown
+        %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.community')
+        .dropdown-menu{"aria-labelledby" => "navbarDropdown"}
+          = link_to t('.community_map'), places_path, class: 'dropdown-item'
+          = link_to t('.browse_members'), members_path, class: 'dropdown-item'
+          = link_to t('.posts'), posts_path, class: 'dropdown-item'
+          = link_to t('.forums'), forums_path, class: 'dropdown-item'
+
+    - if member_signed_in?
+      - if current_member.role?(:crop_wrangler) || current_member.role?(:admin)
         %li.nav-item.dropdown
-          %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.crops')
-          .dropdown-menu
-            = link_to crops_path, class: 'dropdown-item' do
-              = t('.browse_crops')
-            = link_to seeds_path, class: 'dropdown-item' do
-              = seed_icon
-              = t('.seeds')
-            = link_to plantings_path, class: 'dropdown-item' do
-              = planting_icon
-              = t('.plantings')
-            = link_to harvests_path, class: 'dropdown-item' do
-              = harvest_icon
-              = t('.harvests')
-        %li.nav-item.dropdown
-          %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.community')
+          %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.admin')
           .dropdown-menu{"aria-labelledby" => "navbarDropdown"}
-            = link_to t('.community_map'), places_path, class: 'dropdown-item'
-            = link_to t('.browse_members'), members_path, class: 'dropdown-item'
-            = link_to t('.posts'), posts_path, class: 'dropdown-item'
-            = link_to t('.forums'), forums_path, class: 'dropdown-item'
+            - if current_member.role?(:crop_wrangler)
+              = link_to t('.crop_wrangling'), wrangle_crops_path, class: 'dropdown-item'
+            - if current_member.role?(:admin)
+              = link_to t('.admin'), admin_path, class: 'dropdown-item'
 
-      - if member_signed_in?
-        - if current_member.role?(:crop_wrangler) || current_member.role?(:admin)
-          %li.nav-item.dropdown
-            %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}= t('.admin')
-            .dropdown-menu{"aria-labelledby" => "navbarDropdown"}
-              - if current_member.role?(:crop_wrangler)
-                = link_to t('.crop_wrangling'), wrangle_crops_path, class: 'dropdown-item'
-              - if current_member.role?(:admin)
-                = link_to t('.admin'), admin_path, class: 'dropdown-item'
+      %li.nav-item.dropdown
+        %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}
+          = image_tag(avatar_uri(current_member, 50), alt: 'Avatar of current member', height: 25, width: 25, aria: { hidden: "true" })
+          = current_member.login_name
+          - if current_member.unread_count.positive?
+            %span.badge.badge-info= current_member.unread_count
+        .dropdown-menu{"aria-labelledby" => "navbarDropdown"}
+          = link_to member_path(current_member), class: 'dropdown-item' do
+            = t('.profile')
+          = link_to member_activities_path(current_member), class: 'dropdown-item' do
+            = t('.activities')
+          = link_to member_gardens_path(current_member), class: 'dropdown-item' do
+            = t('.gardens')
+          = link_to member_plantings_path(current_member), class: 'dropdown-item' do
+            = t('.plantings')
+          = link_to member_harvests_path(current_member), class: 'dropdown-item' do
+            = t('.harvest')
+          = link_to member_seeds_path(current_member), class: 'dropdown-item' do
+            = t('.seeds')
+          = link_to t('.posts'), member_posts_path(current_member), class: 'dropdown-item'
 
-        %li.nav-item.dropdown
-          %a.nav-link.dropdown-toggle{"aria-expanded" => "false", "aria-haspopup" => "true", "data-bs-toggle" => "dropdown", href: "#", role: "button"}
-            = image_tag(avatar_uri(current_member, 50), alt: 'Avatar of current member', height: 25, width: 25, aria: { hidden: "true" })
-            = current_member.login_name
-            - if current_member.unread_count.positive?
-              %span.badge.badge-info= current_member.unread_count
-          .dropdown-menu{"aria-labelledby" => "navbarDropdown"}
-            = link_to member_path(current_member), class: 'dropdown-item' do
-              = t('.profile')
-            = link_to member_activities_path(current_member), class: 'dropdown-item' do
-              = t('.activities')
-            = link_to member_gardens_path(current_member), class: 'dropdown-item' do
-              = t('.gardens')
-            = link_to member_plantings_path(current_member), class: 'dropdown-item' do
-              = t('.plantings')
-            = link_to member_harvests_path(current_member), class: 'dropdown-item' do
-              = t('.harvest')
-            = link_to member_seeds_path(current_member), class: 'dropdown-item' do
-              = t('.seeds')
-            = link_to t('.posts'), member_posts_path(current_member), class: 'dropdown-item'
-
-            - if current_member.unread_count.positive?
-              .dropdown-divider
-              %strong
-                = link_to(conversations_path, class: 'dropdown-item') do
-                  = t('.inbox')
-                  %span.badge.badge-info= current_member.unread_count
-            - else
-              = link_to t('.inbox'), conversations_path, class: 'dropdown-item'
+          - if current_member.unread_count.positive?
             .dropdown-divider
-            = link_to t('.sign_out'), destroy_member_session_path, method: :delete, class: 'dropdown-item'
+            %strong
+              = link_to(conversations_path, class: 'dropdown-item') do
+                = t('.inbox')
+                %span.badge.badge-info= current_member.unread_count
+          - else
+            = link_to t('.inbox'), conversations_path, class: 'dropdown-item'
+          .dropdown-divider
+          = link_to t('.sign_out'), destroy_member_session_path, method: :delete, class: 'dropdown-item'
 
-      - else
-        %li.nav-item= link_to t('.sign_in'), new_member_session_path, id: 'navbar-signin', class: 'btn btn-signin'
-        %li.nav-item= link_to t('.sign_up'), new_member_registration_path, id: 'navbar-signup', class: 'btn btn-signup'
+    - else
+      %li.nav-item= link_to t('.sign_in'), new_member_session_path, id: 'navbar-signin', class: 'btn btn-signin'
+      %li.nav-item= link_to t('.sign_up'), new_member_registration_path, id: 'navbar-signup', class: 'btn btn-signup'

app/views/members/_contact.html.haml

@@ -1,42 +1,17 @@
-- if member.website_url.present? || member.instagram_handle.present? || member.facebook_handle.present? || member.bluesky_handle.present? || member.other_url.present? || twitter_auth || flickr_auth || member.show_email
+- if twitter_auth || flickr_auth || member.show_email
   %h4 Contact
 
-  - if member.website_url.present?
-    %p
-      = icon 'fas', 'globe', class: 'fa-fw'
-      = link_to "Website", member.website_url, target: '_blank', rel: 'noopener noreferrer'
-
-  - if member.instagram_handle.present?
-    %p
-      = icon 'fab', 'instagram', class: 'fa-fw'
-      = link_to member.instagram_handle, "https://instagram.com/#{member.instagram_handle}", target: '_blank', rel: 'noopener noreferrer'
-
-  - if member.facebook_handle.present?
-    %p
-      = icon 'fab', 'facebook', class: 'fa-fw'
-      = link_to member.facebook_handle, "https://facebook.com/#{member.facebook_handle}", target: '_blank', rel: 'noopener noreferrer'
-
-  - if member.bluesky_handle.present?
-    %p
-      = icon 'fas', 'comment-dots', class: 'fa-fw'
-      = link_to member.bluesky_handle, "https://bsky.app/profile/#{member.bluesky_handle}", target: '_blank', rel: 'noopener noreferrer'
-
-  - if member.other_url.present?
-    %p
-      = icon 'fas', 'link', class: 'fa-fw'
-      = link_to "More...", member.other_url, target: '_blank', rel: 'noopener noreferrer'
-
   - if twitter_auth
     %p
       = image_tag "twitter_32.png", size: "32x32", alt: 'Twitter logo'
-      = link_to twitter_auth.name, "https://twitter.com/#{twitter_auth.name}", target: '_blank', rel: 'noopener noreferrer'
+      = link_to twitter_auth.name, "https://twitter.com/#{twitter_auth.name}"
 
   - if flickr_auth
     %p
       = image_tag "flickr_32.png", size: "32x32", alt: 'Flickr logo'
-      = link_to flickr_auth.name, "https://flickr.com/photos/#{flickr_auth.uid}", target: '_blank', rel: 'noopener noreferrer'
+      = link_to flickr_auth.name, "https://flickr.com/photos/#{flickr_auth.uid}"
 
   - if member.show_email
     %p
-      = icon 'fas', 'envelope', class: 'fa-fw'
+      Email:
       = mail_to member.email

app/views/plantings/_form.html.haml

@@ -47,6 +47,11 @@
           = f.number_field :quantity, label: 'How many?', min: 1
       = f.text_area :description, rows: 6, label: 'Tell us more about it'
 
+      = f.collection_check_boxes :problem_ids, Problem.approved.order(:name), :id, :name do |b|
+        .form-check
+          = b.check_box
+          = b.label
+
       .row
         .col-md-6
           = f.check_box :finished, label: 'Mark as finished'

app/views/plantings/show.html.haml

@@ -51,6 +51,23 @@
 
     .col-md-8.col-xs-12
       %section= render 'facts', planting: @planting
+
+      - if @planting.problems.any?
+        %section.problems
+          %h2 Problems
+          - @planting.planting_problems.each do |planting_problem|
+            .card
+              .card-header
+                %h3= planting_problem.problem.name
+              .card-body
+                - if planting_problem.photos.any?
+                  .row
+                    - planting_problem.photos.each do |photo|
+                      .col-md-4
+                        = image_tag photo.thumbnail_url, class: 'img-fluid'
+                - else
+                  %p No photos of this problem for this planting yet.
+
       - if @planting.description.present?
         = cute_icon
         .card

app/views/posts/_comments.html.haml

@@ -9,4 +9,3 @@
 
 - else
   %h2 There are no comments yet
-

app/views/problems/_form.html.haml

@@ -0,0 +1,54 @@
+= bootstrap_form_for(@problem) do |f|
+  - if @problem.errors.any?
+    #error_explanation.alert.alert-warning{role: "alert"}
+      %h3
+        = pluralize(@problem.errors.size, "error")
+        prohibited this problem from being saved:
+      %ul
+        - @problem.errors.full_messages.each do |msg|
+          %li= msg
+
+  .card.col-12.col-md-8.mx-auto.float-none.white
+    .card-header
+      - if content_for? :title
+        %h1.h2-responsive.text-center
+          %strong=yield :title
+    .card-body
+      - if can? :wrangle, @problem
+        %p
+          %span.help-block
+            As a problem wrangler, you can approve or reject problem suggestions.
+
+      %h2 Basic information
+
+      .form-group#new_problem
+      = f.text_field :name, required: true
+      %span.help-block
+        The common name for the problem, in English (required).
+        - if can? :wrangle, @problem
+          Wranglers: please ensure this is singular, and capitalize
+          proper nouns only.
+
+      - if (can?(:wrangle, @problem) && @problem.requester) || (cannot?(:wrangle, @problem) && @problem.new_record?)
+        %h2 Problem request notes
+        = f.text_area :request_notes, rows: 3, id: 'request_notes', label: 'Comments'
+
+      - unless can? :wrangle, @problem
+        %p
+          When you submit this form, your suggestion will be sent to our team of
+          volunteer problem wranglers for review. We'll let you know the outcome as soon as we can.
+
+      - if can?(:wrangle, @problem) && @problem.requester
+        = f.select(:reason_for_rejection, @problem.reasons_for_rejection, include_blank: true)
+
+        = f.text_area :rejection_notes, rows: 3
+        %span.help-block
+          Please provide additional notes why this problem request was rejected if the above reasons do not apply.
+
+    .card-footer
+      .text-right
+        - if @problem.approved?
+          = f.submit 'Save'
+        - else
+          = f.submit 'Reject', class: 'btn btn-danger', name: 'reject'
+          = f.submit 'Approve and save', class: 'btn btn-success', name: 'approve'

app/views/problems/_thumbnail.html.haml

@@ -0,0 +1,10 @@
+- cache problem do
+  .card.problem-thumbnail
+    = link_to problem_path(id: problem.slug) do
+      = image_tag(problem.thumbnail_url.presence || placeholder_image,
+                          alt: "Image of #{problem.name}",
+                          class: 'img img-card')
+
+
+    .text
+      %h3.problem-name= link_to problem.name, problem_path(id: problem.slug)

app/views/problems/edit.html.haml

@@ -0,0 +1,30 @@
+- content_for :title, "Edit problem: #{@problem.name}"
+
+- if @problem.approval_status == "approved"
+  - if @problem.requester
+    %p
+      Requested by #{link_to @problem.requester, @problem.requester}
+      #{distance_of_time_in_words(@problem.created_at, Time.zone.now)} ago.
+    %p
+      Approved by #{link_to @problem.creator, @problem.creator}.
+  - else
+    %p
+      Added by
+      = link_to @problem.creator, @problem.creator
+      #{distance_of_time_in_words(@problem.created_at, Time.zone.now)} ago.
+- elsif @problem.approval_status == "pending"
+  .alert.alert-danger
+    %p
+      Requested by #{link_to @problem.requester, @problem.requester}
+      #{distance_of_time_in_words(@problem.created_at, Time.zone.now)} ago.
+    %p
+      Status: #{@problem.approval_status}.
+- elsif @problem.approval_status == "rejected"
+  .alert.alert-danger
+    %p
+      Requested by #{link_to @problem.requester, @problem.requester}
+      #{distance_of_time_in_words(@problem.created_at, Time.zone.now)} ago.
+    %p
+      Status: #{@problem.approval_status} by #{link_to @problem.creator, @problem.creator}.
+
+= render 'form'

app/views/problems/index.html.haml

@@ -0,0 +1,13 @@
+- content_for :title, t('.title')
+
+- content_for :breadcrumbs do
+  %li.breadcrumb-item.active= link_to 'Problems', problems_path
+
+%section.problems
+  %h2= t('.title')
+  = will_paginate @problems
+  .index-cards
+    - @problems.each do |p|
+      = render 'problems/thumbnail', problem: p
+
+  = will_paginate @problems

app/views/problems/new.html.haml

@@ -0,0 +1,15 @@
+- content_for :title, (can?(:wrangle, @problem) ? "New problem" : "Suggest a problem")
+
+- unless can? :wrangle, @problem
+  %p
+    Thanks for taking the time to suggest a problem! Our problem database is
+    managed by volunteers, and we appreciate your help. Here are some
+    things to consider when suggesting a new problem:
+  %ul
+    %li
+      First, you might want to search our problems
+      to make sure we don't have it already, perhaps under an alternate name.
+    %li
+      The Growstuff database only contains problems related to growing edible plants.
+
+= render 'form'

app/views/problems/show.html.haml

@@ -0,0 +1,26 @@
+- content_for :title, @problem.name
+
+- content_for :breadcrumbs do
+  %li.breadcrumb-item= link_to 'Problems', problems_path
+  %li.breadcrumb-item.active= link_to @problem.name.capitalize, @problem
+
+.jumbotron
+  %h1= @problem.name
+
+.row
+  .col-md-9
+    %section.plantings
+      %h2 Plantings with this problem
+      = will_paginate @plantings
+      .index-cards
+        - @plantings.each do |p|
+          = render 'plantings/thumbnail', planting: p
+      = will_paginate @plantings
+  .col-md-3
+    .card
+      .card-body
+        %h4.card-title= @problem.name
+        %p.card-text
+          This problem has been reported on
+          = pluralize(@problem.plantings.count, 'planting')
+          so far.

app/views/problems/wrangle.html.haml

@@ -0,0 +1,51 @@
+- content_for :title, "Problem Wrangling"
+
+%h1 Problem Wrangling
+
+%nav.nav
+  = link_to "Add Problem", new_problem_path, class: 'btn'
+
+%section.problem_wranglers
+  %h2 Problem Wranglers
+  - @problem_wranglers.each do |problem_wrangler|
+    = render 'members/tiny', member: problem_wrangler
+
+%hr/
+
+%section
+  %h2 Problems
+
+  %ul#myTab.nav.nav-tabs{role: "tablist"}
+    %li.nav-item
+      %a#home-tab.nav-link{ href: wrangle_problems_path, role: "tab", class: @approval_status.blank? ? 'active' : ''}
+        Recently added
+    %li.nav-item
+      %a#profile-tab.nav-link{ href: wrangle_problems_path(approval_status: "pending"), role: "tab", class: @approval_status == "pending" ? 'active' : ''}
+        Pending approval
+    %li.nav-item
+      %a#contact-tab.nav-link{ href: wrangle_problems_path(approval_status: "rejected"), role: "tab", class: @approval_status == "rejected" ? 'active' : ''} Rejected
+
+  %table.table.table-striped.table-bordered.table-sm{id: @approval_status.blank? ? 'recently-added-problems' : "#{@approval_status}-problems" }
+    %tr
+      %th Name
+      %th Requested by
+      - if @approval_status == "rejected"
+        %th Rejected by
+      - if @approval_status != "rejected" && @approval_status != "pending"
+        %th Added by
+      %th When
+    - @problems.each do |p|
+      %tr
+        %td
+          = link_to edit_problem_path(p) do
+            = icon 'fas', 'bug'
+            = p.name
+        %td= p.requester.present? ? (link_to p.requester, p.requester) : "N/A"
+        - unless @approval_status == "pending"
+          %td= p.creator.present? ? (link_to p.creator, p.creator) : "N/A"
+        %td
+          = distance_of_time_in_words(p.created_at, Time.zone.now)
+          ago.
+
+  = page_entries_info @problems
+  = will_paginate @problems

config/routes.rb

@@ -89,6 +89,13 @@ Rails.application.routes.draw do
     end
   end
 
+  resources :problems, param: :slug do
+    collection do
+      get 'requested'
+      get 'wrangle'
+    end
+  end
+
   resources :comments
   resources :forums
 

db/migrate/20240716120000_add_social_media_to_members.rb

@@ -1,9 +0,0 @@
-class AddSocialMediaToMembers < ActiveRecord::Migration[6.0]
-  def change
-    add_column :members, :website_url, :string
-    add_column :members, :instagram_handle, :string
-    add_column :members, :facebook_handle, :string
-    add_column :members, :bluesky_handle, :string
-    add_column :members, :other_handle, :string
-  end
-end

db/migrate/20240716120001_rename_other_handle_to_other_url_in_members.rb

@@ -1,5 +0,0 @@
-class RenameOtherHandleToOtherUrlInMembers < ActiveRecord::Migration[6.0]
-  def change
-    rename_column :members, :other_handle, :other_url
-  end
-end

db/schema.rb

@@ -446,11 +446,6 @@ ActiveRecord::Schema[7.2].define(version: 2024_09_29_041435) do
     t.integer "photos_count"
     t.integer "forums_count"
     t.integer "activities_count"
-    t.string "website_url"
-    t.string "instagram_handle"
-    t.string "facebook_handle"
-    t.string "bluesky_handle"
-    t.string "other_url"
     t.index ["confirmation_token"], name: "index_members_on_confirmation_token", unique: true
     t.index ["discarded_at"], name: "index_members_on_discarded_at"
     t.index ["email"], name: "index_members_on_email", unique: true

lib/haml/filters/growstuff_markdown.rb

@@ -4,6 +4,7 @@
 class Haml::Filters
   class GrowstuffMarkdown
     CROP_REGEX = /(?<!\\)\[([^\[\]]+?)\]\(crop\)/
+    PROBLEM_REGEX = /(?<!\\)\[([^\[\]]+?)\]\(problem\)/
     MEMBER_REGEX = /(?<!\\)\[([^\[\]]+?)\]\(member\)/
     MEMBER_AT_REGEX = /(?<!\\)(@\w+)/
     MEMBER_ESCAPE_AT_REGEX = /(?<!\\)\\(?=@\w+)/
@@ -42,6 +43,25 @@ class Haml::Filters
       end
     end
 
+  def expand_problems!(text)
+    # turn [aphids](problem) into [aphids](http://growstuff.org/problems/aphids)
+    text.gsub(PROBLEM_REGEX) do
+      problem_str = Regexp.last_match(1)
+      # find problem case-insensitively
+      problem = Problem.where('lower(name) = ?', problem_str.downcase).first
+      problem_link problem, problem_str
+    end
+  end
+
+  def problem_link(problem, link_text)
+    if problem
+      url = Rails.application.routes.url_helpers.problem_url(problem, only_path: true)
+      "[#{link_text}](#{url})"
+    else
+      link_text
+    end
+  end
+
     def crop_link(crop, link_text)
       if crop
         url = Rails.application.routes.url_helpers.crop_url(crop, only_path: true)