CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3relationship
logesh
logesh

Reputation: 2672

How to add value to the table from view of another in rails?

Consider i have two tables namely Item and color.

The Item table contains has_many relationship with colour as each items can have more than one color but the colors are not already present.

I have a page where i have to add items and in the same page i have to specify the colors for the item. so how can i add those values to the color table along with item id. Please help me. I am struggling to move.

EDIT:

Item model

class Item < ActiveRecord::Base
has_many :colors
end

Color model

class Color < ActiveRecord::Base
    belongs_to :items
    end

table

 id | created_at | updated_at | item_id | color_name 
----+------------+------------+---------+--------------

Upvotes: 0

Views: 220

Answers (1)

Manoj Monga
Manoj Monga

Reputation: 3083

If the colors will always be created with item then you need to use nested attributes.

class Item < ActiveRecord::Base
  attr_accessible :colors_attributes
  has_many :colors
  accepts_attributes_for :colors
end

In your controller action Items#new

@items.colors.build

In your items/new.html.erb add the fields_for with the other fields of items table.

<%= form_for @item do |f| %>
  <%= f.text_field :name %>
  ...
  <%= f.fields_for :colors do |color| %>
   <%= color.text_field :some_column_name_from_color %>
  <% end %>
<% end %>

For adding/removing multiple colors on the fly you can use nested_form gem

Upvotes: 1

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