DRY the nav bars and make all the same

app/views/gardens/_nav.haml

@@ -1,10 +0,0 @@
-- content_for :buttonbar do
-  - if current_member
-    = link_to 'My Gardens', member_gardens_path(owner: current_member.slug), class: 'btn btn-default'
-
-  = link_to "Everyone's gardens", gardens_path, class: 'btn btn-default'
-
-  - if can?(:create, Garden)
-    = link_to 'Add a garden', new_garden_path, class: 'btn btn-default'
-  - unless current_member
-    = render 'shared/signin_signup', to: 'add a new garden'

app/views/gardens/index.html.haml

@@ -1,6 +1,6 @@
 - content_for :title, @owner ? "#{@owner}'s gardens" : "Everyone's gardens"
 
-= render 'nav'
+= render 'layouts/nav', model: Garden
 
 = link_to gardens_active_tickbox_path(@owner, @show_all) do
   = check_box_tag 'active', 'all', @show_all

app/views/harvests/_nav.haml

@@ -1,15 +0,0 @@
-%p
-  - if can? :create, Harvest
-    - if @planting && @planting.owner == current_member
-      = link_to 'Add harvest', new_planting_harvest_path(planting: @planting), class: 'btn btn-primary'
-    - elsif @owner
-      %p
-      - if @owner == current_member
-        = link_to 'Add harvest', new_harvest_path, class: 'btn btn-primary'
-      = link_to "View everyone's harvests", harvests_path, class: 'btn btn-default'
-    - else # everyone's harvests
-      = link_to 'Add harvest', new_harvest_path, class: 'btn btn-primary'
-      - if current_member
-        = link_to 'View your harvests', member_harvests_path(owner: current_member.slug), class: 'btn btn-default'
-  - else
-    = render partial: 'shared/signin_signup', locals: { to: 'track your harvests' }

app/views/harvests/index.html.haml

@@ -7,7 +7,8 @@
   #{ENV['GROWSTUFF_SITE_NAME']} helps you track what you're
   harvesting from your home garden and see how productive it is.
 
-= render "nav"
+= render 'layouts/nav', model: Harvest
+
 .pagination
   = page_entries_info @harvests
   = will_paginate @harvests

app/views/layouts/_nav.haml

@@ -0,0 +1,14 @@
+- content_for :buttonbar do
+  - if current_member.present?
+    = link_to url_for([current_member, model]), class: 'btn btn-default' do
+      My #{model.model_name.human.pluralize}
+
+  = link_to model, class: 'btn btn-default' do
+    Everyone's #{model.model_name.human.pluralize}
+
+  - if can?(:create, model)
+    = link_to url_for([model, action: :new]), class: 'btn btn-default' do
+      Add a #{model.model_name.human}
+
+  - unless current_member
+    = render 'shared/signin_signup', to: 'add a new seed'

app/views/plantings/_nav.haml

@@ -1,17 +0,0 @@
-
-- content_for :buttonbar do
-  - if current_member
-    = link_to 'My Plantings', member_plantings_path(owner: current_member.slug), class: 'btn btn-default'
-  - if owner && owner != current_member
-    = link_to "#{owner.login_name}'s Plantings", member_plantings_path(owner: owner.slug), class: 'btn btn-default'
-  = link_to "Everyone's plantings", plantings_path, class: 'btn btn-default'
-
-  = link_to plantings_active_tickbox_path(@owner, show_all) do
-    = check_box_tag 'active', 'all', show_all
-    include in-active
-
-- if current_member
-  - if can? :create, Planting
-    = link_to 'Plant something', new_planting_path, class: 'btn btn-primary'
-- else
-  = render partial: 'shared/signin_signup', locals: { to: "track what you've planted" }

app/views/plantings/index.html.haml

@@ -1,6 +1,7 @@
 - content_for :title, title('plantings', @owner, @crop, @planting)
 
-= render 'nav', owner: @owner, show_all: @show_all
+= render 'layouts/nav', model: Planting
+
 
 - if @owner
   = link_to t('.view_owners_profile', owner: @owner), member_path(@owner)

app/views/seeds/index.html.haml

@@ -7,19 +7,7 @@
   #{ENV['GROWSTUFF_SITE_NAME']} helps you track your seed
   stash or trade seeds with other members.
 
-%p
-  - if can? :create, Seed
-    - if @owner
-      %p
-        - if @owner == current_member
-          = link_to 'Add seeds', new_seed_path, class: 'btn btn-primary'
-        = link_to "View everyone's seeds", seeds_path, class: 'btn btn-default'
-    - else # everyone's seeds
-      = link_to 'Add seeds', new_seed_path, class: 'btn btn-primary'
-      - if current_member
-        = link_to 'View your seeds', member_seeds_path(owner: current_member.slug), class: 'btn btn-default'
-  - else
-    = render partial: 'shared/signin_signup', locals: { to: 'add seeds to your stash' }
+= render 'layouts/nav', model: Seed
 
 .pagination
   = page_entries_info @seeds