added crop_id and garden_id params to controller

app/controllers/plantings_controller.rb

@@ -27,6 +27,10 @@ class PlantingsController < ApplicationController
   def new
     @planting = Planting.new
 
+    # using find_by_id here because it returns nil, unlike find
+    @crop     = Crop.find_by_id(params[:crop_id])
+    @garden   = Garden.find_by_id(params[:garden_id])
+
     respond_to do |format|
       format.html # new.html.erb
       format.json { render json: @planting }

spec/controllers/plantings_controller_spec.rb

@@ -1,35 +1,11 @@
 require 'spec_helper'
 
-# This spec was generated by rspec-rails when you ran the scaffold generator.
-# It demonstrates how one might use RSpec to specify the controller code that
-# was generated by Rails when you ran the scaffold generator.
-#
-# It assumes that the implementation code is generated by the rails scaffold
-# generator.  If you are using any extension libraries to generate different
-# controller code, this generated spec may or may not pass.
-#
-# It only uses APIs available in rails and/or rspec-rails.  There are a number
-# of tools you can use to make these specs even more expressive, but we're
-# sticking to rails and rspec-rails APIs to keep things simple and stable.
-#
-# Compared to earlier versions of this generator, there is very limited use of
-# stubs and message expectations in this spec.  Stubs are only used when there
-# is no simpler way to get a handle on the object needed for the example.
-# Message expectations are only used when there is no simpler way to specify
-# that an instance is receiving a specific message.
-
 describe PlantingsController do
 
-  # This should return the minimal set of attributes required to create a valid
-  # Planting. As you add validations to Planting, be sure to
-  # update the return value of this method accordingly.
   def valid_attributes
     { :garden_id => 1, :crop_id => 1 }
   end
 
-  # This should return the minimal set of values that should be in the session
-  # in order to pass any filters (e.g. authentication) defined in
-  # PlantingsController. Be sure to keep this updated too.
   def valid_session
     {}
   end
@@ -55,6 +31,41 @@ describe PlantingsController do
       get :new, {}, valid_session
       assigns(:planting).should be_a_new(Planting)
     end
+
+    it "picks up crop from params" do
+      crop = Crop.create!(
+        :system_name => 'Maize',
+        :en_wikipedia_url => 'http://blah'
+      )
+      get :new, {:crop_id => crop.id}, valid_session
+      assigns(:crop).should eq(crop)
+    end
+
+    it "doesn't die if no crop specified" do
+      get :new, {}, valid_session
+      assigns(:crop).should be_nil
+    end
+
+    it "picks up garden from params" do
+      user = User.create!(
+        :username => 'blah',
+        :password => 'blahblah',
+        :email => 'blah@example.com',
+        :tos_agreement => true
+      )
+      garden = Garden.create!(
+        :name => 'blah',
+        :user_id => user.id
+      )
+      get :new, {:garden_id => garden.id}, valid_session
+      assigns(:garden).should eq(garden)
+    end
+
+    it "doesn't die if no garden specified" do
+      get :new, {}, valid_session
+      assigns(:garden).should be_nil
+    end
+
   end
 
   describe "GET edit" do