groups of articles now shown on ribica.ba/group/1/, background is in cloudinary

front-api/controllers/item.rb

@@ -73,6 +73,7 @@ get '/item/sub_category/:sub_category_id/offset/:offset/limit/:limit' do |sub_ca
   prepare_items_for_mass_display(items)
 end
 
+
 # gets list of items in cart without count
 get '/cart/item_details' do 
   cart = Cart.find_or_create(anonymous_id, -1)
@@ -83,3 +84,14 @@ get '/cart/item_details' do
   items = Item.find(item_ids) if cart.item_in_carts.length > 0 
   prepare_items_for_mass_display(items)
 end
+
+
+# gets items in sub category ( useful for page showing single sub_category )
+get '/item/item_group/:item_group_id/offset/:offset/limit/:limit' do |item_group_id_s, offset_s, limit_s|
+  item_group_id, offset, limit = mass_to_i(item_group_id_s, offset_s, limit_s)
+  input_invalid = offset_and_limit_invalid?(offset,limit) or item_group_id <= 0
+  return [].to_json if input_invalid 
+
+  items = ItemGroup.find(item_group_id).all_items(offset, limit)
+  prepare_items_for_mass_display(items)
+end

front-api/models/item_group.rb

@@ -0,0 +1,8 @@
+class ItemGroup < ActiveRecord::Base
+	has_and_belongs_to_many :items, :join_table => 'item_item_groups'
+
+	def all_items(offset, limit)
+		self.items.where(on_display: true).order(:created_at).limit(limit).offset(offset).all
+	end
+
+end