CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4
batinex
batinex

Reputation: 11

Rails - nestes resources, wrong id

I have a Group model, which has many lists.

Group

class Group < ActiveRecord::Base
  has_many :memberships
  has_many :users, through: :memberships
  has_many :lists
  accepts_nested_attributes_for :lists
  cattr_accessor :current_user
end

List

class List < ApplicationRecord
  belongs_to :group
  validates_presence_of :group_id
end

I iterate over @group.lists

  <% @group.lists.each do |elem| %>
<p><strong><%= elem.title %></strong></p>
<p><%= elem.body %></p>
<%= link_to 'Delete list', [elem.group, elem], method: :delete,
            data: {confirm: "Are you sure?"} %>

  <%= link_to 'Update list', edit_group_list_path(:group_id => @group.id, :list_id => elem.id), method: :put %>

<% end %>

Delete method works good, but update method works wrong. Instead of creating links like http://localhost:3000/groups/9/lists/10/ where group_id is 9 and list_id is 10, it's doing something like this http://localhost:3000/groups/9/lists/9/edit?list_id=15

Routes:

resources :groups do
resources :lists
end

Upvotes: 0

Views: 35

Answers (2)

Xavier
Xavier

Reputation: 3513

As @Ursus said, the default behavior of nested resources in rails to to accept a plain :id parameter for the innermost resource, /groups/:group_id/lists/:id. You can also simply pass in the objects directly instead of mapping to ID integers:

edit_group_list_path(@group, elem)

You can read more about nested resources here: http://guides.rubyonrails.org/routing.html#nested-resources

Upvotes: 1

Ursus
Ursus

Reputation: 30071

Run

rails routes

to understand where you are wrong

Anyway, the nested resource requires just id, so

edit_group_list_path(:group_id => @group.id, :id => elem.id)

Any other parameter is added in query string

Upvotes: 1

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