make crop search case insensitive

app/models/crop.rb

@@ -174,7 +174,7 @@ class Crop < ActiveRecord::Base
   # searches for crops whose names match the string given
   # just uses SQL LIKE for now, but can be made fancier later
   def self.search(query)
-    where("name LIKE ?", "%#{query}%")
+    where("name ILIKE ?", "%#{query}%")
   end
 
 end

spec/models/crop_spec.rb

@@ -321,6 +321,9 @@ describe Crop do
     it "doesn't find non-matches" do
       Crop.search('mush').should_not include @crop
     end
+    it "searches case insensitively" do
+      Crop.search('mUsH').should include @mushroom
+    end
   end
 
 end