added filter criteria models

front-api/controllers/filter_criteria.rb

@@ -0,0 +1,20 @@
+get '/filter/section/:id' do |id_s| 
+  # get filter criteria for a section with id
+  FilterCriteria.where(:owner_type => "Section").where(:owner_id => id_s.to_i).to_json(
+    :include => [:filter_criteria_values]
+  )
+end
+
+get '/filter/category/:id' do |id_s|
+  # get filter criteria for a category with id
+  FilterCriteria.where(:owner_type => "Category").where(:owner_id => id_s.to_i).to_json(
+    :include => [:filter_criteria_values]
+  )
+end
+
+get '/filter/subcategory/:id' do |id_s|
+  # get filter criteria for a subcategory with id
+  FilterCriteria.where(:owner_type => "Subcategory").where(:owner_id => id_s.to_i).to_json(
+    :include => [:filter_criteria_values]
+  )
+end

front-api/db/migrate/20150207115622_create_filter_criteria.rb

@@ -0,0 +1,11 @@
+class CreateFilterCriteria < ActiveRecord::Migration
+  def change
+    create_table :filter_criteria do |t|
+      t.string :title
+      t.string :field_name
+      t.integer :type # list, checkbox list
+      t.string :owner_type # section, cat, subcat
+      t.integer :owner_id
+    end
+  end
+end

front-api/db/migrate/20150207120207_create_filter_criteria_values.rb

@@ -0,0 +1,9 @@
+class CreateFilterCriteriaValues < ActiveRecord::Migration
+  def change
+    create_table :filter_criteria_values do |t|
+      t.string :filter_text
+      t.string :filter_value
+      t.integer :filter_criteria_id
+    end 
+  end
+end

front-api/db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150206041455) do
+ActiveRecord::Schema.define(version: 20150207120207) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -30,6 +30,20 @@ ActiveRecord::Schema.define(version: 20150206041455) do
     t.string  "image_url"
   end
 
+  create_table "filter_criteria", force: :cascade do |t|
+    t.string  "title"
+    t.string  "field_name"
+    t.integer "type"
+    t.integer "owner_type"
+    t.integer "owner_id"
+  end
+
+  create_table "filter_criteria_values", force: :cascade do |t|
+    t.string  "filter_text"
+    t.string  "filter_value"
+    t.integer "filter_criteria_id"
+  end
+
   create_table "item_in_carts", force: :cascade do |t|
     t.integer  "cart_id"
     t.integer  "item_id"
@@ -72,10 +86,8 @@ ActiveRecord::Schema.define(version: 20150206041455) do
   end
 
   create_table "sub_categories", force: :cascade do |t|
-    t.string   "name"
-    t.integer  "category_id"
-    t.datetime "created_at",  null: false
-    t.datetime "updated_at",  null: false
+    t.string  "name"
+    t.integer "category_id"
   end
 
   create_table "units", force: :cascade do |t|

front-api/models/category.rb

@@ -1,4 +1,5 @@
 class Category < ActiveRecord::Base
   has_many  :sub_categories
+  has_many :filter_criterias, as: :owner
   belongs_to :section
 end

front-api/models/filter_criteria.rb

@@ -0,0 +1,9 @@
+class FilterCriteria < ActiveRecord::Base
+  has_many :filter_criteria_values
+  belongs_to :owner, polymorphic: true
+
+  self.inheritance_column = :_type_disabled
+  def owner_type=(class_name)
+    super(class_name.constantize.base_class.to_s)
+  end
+end

front-api/models/filter_criteria_value.rb

@@ -0,0 +1,3 @@
+class FilterCriteriaValue < ActiveRecord::Base
+  belongs_to :filter_criteria
+end

front-api/models/section.rb

@@ -1,3 +1,4 @@
 class Section < ActiveRecord::Base
   has_many :categories
+  has_many :filter_criterias, as: :owner
 end

front-api/models/sub_category.rb

@@ -1,5 +1,6 @@
 class SubCategory < ActiveRecord::Base
   belongs_to :category
+  has_many :filter_criterias, as: :owner
 end