Rails - has_many :through association + save data for association - ruby-on-rails

Question

I have setup has_many and has_many :through association between a Order,User,Product and Order_detail model as a join table.
Models:
class Order < ActiveRecord::Base
has_many :order_details
belongs_to :user
has_many :products, through: :order_details
end
class OrderDetail < ActiveRecord::Base
belongs_to :order
belongs_to :product
end
class Product < ActiveRecord::Base
has_many :order_details
has_many :orders, through: :order_details
end
class User < ActiveRecord::Base
has_many :orders
end
How to save automatically for join table order_details.
Now data save only to order table.
Need to save all products to order_tables for current order and user
class OrdersController < ApplicationController
before_action :authenticate_user!
def index
#order = Order.all
end
def new
# #order = Order.new
#order = current_user.orders.new
end
def create
#order = current_user.orders.new(order_params)
#order.date = Date.today.to_s
if #order.save
# i think this is bad wrong to implementation of functional)
# params[:product_id].each do |detail_product_id|
# #order.order_details.product_id = detail_product_id
# #order.order_details.user_id = current_user
# #order.order_details.save
flash[:success] = "Order was successfully submitted"
redirect_to new_order_path
else
render :new
end
end
private
def order_params
params.require(:order).permit(:date, :product_id => [])
end
end
My schema:
create_table "order_details", force: true do |t|
t.integer "order_id"
t.integer "product_id"
t.integer "quantity"
t.integer "price"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "orders", force: true do |t|
t.integer "user_id"
t.date "date"
end
add_index "orders", ["user_id"], name: "index_orders_on_user_id", using: :btree
create_table "orders_products", id: false, force: true do |t|
t.integer "order_id"
t.integer "product_id"
end
create_table "products", force: true do |t|
t.string "product_name"
t.integer "product_price"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.boolean "available_status"
t.string "product_type"
end

Answer 1

In your view, add fields for order_details like:
<%= f.fields_for :order_details do |od| %>
<%= od.label 'your attribute for OrderDetail' %>
<%= # od.text_field 'your attribute' %>
<% end %>
Then in your model, accept nested attributes for order_details
like:
accepts_nested_attributes_for :order_details
These are sample values, you can use this logic with your actual attributes.
In your controller, permit attributes for order_details like:
params.require(:order).permit(:id, :name, order_details: [
#attributes of order details
])

Answer 2

Assuming that product_ids is an array of the product ids that you wish to add to the order, you could try assigning them in the following way and Rails should automagically create those association records for order_details when you then call #order.save
#order.products << Product.find_by_id(product_ids)

Answer 3

Am i right add that rows for controller?
Order_controller:
def create
#order = current_user.orders.new(order_params)
#order.products = Product.find_by_id(order_params[:product_ids])
#order.date = Date.today.to_s
if #order.save
flash[:success] = "Order was successfully submitted"
redirect_to new_order_path
else
render :new
end
end
private
def order_params
params.require(:order).permit(:date, order_details: [:product_id])
end
end
order model:
accepts_nested_attributes_for :order_details
I'm trying to save from 3 different types of products.
But how to take one product id from each part ? Because now I can choose only one product from all
View:
= simple_form_for(#order, html: {:class => 'well form-horizontal', :method => :post, :action=> :create }) do |f|
.col-xs-12.col-sm-6.col-md-8
= render 'shared/error_messages', object: f.object
%br
= simple_fields_for :order_details do |od|
= od.collection_radio_buttons :product_ids, Product.get_first_course, :id, :product_name ,:item_wrapper_class => 'inline'
%hr
= od.collection_radio_buttons :product_ids, Product.get_main_course, :id, :product_name, :item_wrapper_class => 'inline'
%hr
= od.collection_radio_buttons :product_ids, Product.get_drink, :id, :product_name,:item_wrapper_class => 'inline'
%hr
= f.button :submit, class: "btn btn-primary"

Answer 4

I change my association type to HABTM and that's enough for my situation. So..
models:
class Order < ActiveRecord::Base
has_and_belongs_to_many :products
before_destroy { products.clear }
end
class Product < ActiveRecord::Base
has_and_belongs_to_many :orders
end
Order_controller:
def create
order = current_user.orders.new(date: Date.today.to_s)
#order_products = Product.where(id: order_params[:product_ids])
order.products << #order_products
if order.save
#blalblal - sucsess
else
#blabla - alert-notice
end