class Chapter < ActiveRecord::Base
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# Do not forget to automatically `touch` parent object from associations
belongs_to :book, touch: true
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
endafter_touch() { tire.update_index }
def feed_entries
FeedEntry.in(source_id: sources.map(&:id))
end@category.feed_entries
ds = params[:diameter].split(','),@items = @sub_category.items.where( :size => [ds.first..ds.last])The require method ensures that a specific parameter is present, and if it's not provided, the require method throws an error. It returns an instance of ActionController::Parameters for the key passed into require.
messege : { author_id:1, destin_id:2, content:3}
def get_my_json
json = nil
if Rails.cache.exist?('my_json')
json = Rails.cache.read('my_json')
else
response = RestClient.get 'someexternalsvc.org/products.json'
json = JSON(response)
Rails.cache.write('my_json',json, :expires_in => 10.minutes)
end
json
endcreate_table :carts_items do |t|
t.references :card
t.references :item
t.decimal :quantity
end