Rails Forms Passing Array in Params for M to M Associaton

Edit: Essentially something like this needs to be missed:

{
  'tabled_id' : '1',
  'recipes' : [{
        { 'recipe_id' : '3',
          'quantity' : '2'
        }
        { 'recipe_id' : '5',
          'quantity' : '1'
        }
  }]
}

      

        
        
        
      

    

And I think what I should do params.require(:order).permit(:table_id, {recipes:, [:id,:quantity]} )

on the controller side.

I'm learning Rails while building an order system and I'm stuck trying to create a form for orders that are missing quantities. Where Orders is an embedded resource for a Restaurant.

My models look like this:

class Restaurant < ActiveRecord::Base
    has_many :orders
    has_many :recipes, dependent: :destroy
end

class Order < ActiveRecord::Base
    belongs_to :restaurant
    has_many :order_recipes, dependent: :destroy
    has_many :recipes, through: :order_recipes
end

class Recipe < ActiveRecord::Base
    belongs_to :restaurant
    has_many :order_recipes
    has_many :orders, through: :order_recipes
end

      

        
        
        
      

    

View:

    <%= form_for([@restaurant, @order]) do |order_form| %>
        <%= order_form.label :Table_Number %>
        <%= order_form.number_field :table_id %>

        <h3>Recipes: </h3>
        <br>

        <% @restaurant.recipes.each do |recipe| %>
            <%= order_form.fields_for :recipe, recipe do |r| %>
                <%= r.label recipe.name %>
                <%= r.hidden_field :id %>
                <%= r.number_field :quantity %>
            <% end %>
        <% end %>

        <%= order_form.submit(@order.new_record? ? "Create Order" : "Edit Order", class: "btn btn-success") %>
    <% end %>

      

        
        
        
      

    

This will give a form that looks correct but will not pass all parameters. Let's say I have 3 recipes. And I set their quantities to 2,3,4 respectively and table_id to 1. When I check the parameters, I see that only the last recipe with its quantity was accepted. params[:order] => {"table_id"=>"1", "recipe"=>{"id"=>"4", "quantity"=>"4"}}

I need to be able to send all recipes with assigned quantities. Also, I am using the accepted answer in this question to be able to access the count column: Rails 4 Accessing the join table attributes