CODEWITHSUNDEEP
ruby-on-rails-4
SORRROW
SORRROW

Reputation: 55

Rails collection_check_boxes

I am trying to make use of the collection_check_boxes method.

A grouphas many usersand a user can belong to multiple groups.

user.rb

class User < ActiveRecord::Base
 has_and_belongs_to_many :groups
end

group.rb

class Group < ActiveRecord::Base
 has_and_belongs_to_many :users
end

groupes.controller.rb

class GroupsController < ApplicationController

 def new
    @group = Group.new
 end
end

new.html.slim

h1 Groupes

.hsep

.container-fluid

 == form_for @group, { html: { class: 'form-horizontal', remote:true, id: 'new_user' } } do |f|

.form-group
    .col-sm-10
        == f.collection_check_boxes :group, :user_ids, User.all, :id, :login

== f.submit

My goal is that when a new groupis created, the user can choose which usersbelong to that group with a checkbox list from all the users.

The error

ActionView::Template::Error (undefined method `merge' for :login:Symbol):
13: 
14:     .form-group
15:         .col-sm-10
16:             == f.collection_check_boxes :group, :user_ids, User.all, :id, :login
17: 
18:     == f.submit

I most likely missed something on how to properly use collection_check_boxesbut I just can't get around fixing it myself.

Upvotes: 0

Views: 504

Answers (1)

Alex Kojin
Alex Kojin

Reputation: 5204

Looks like you didn't pass "text_method" argument to collection_check_boxes

If you have user's column name when add it and remove :group because you use it with form_for

== f.collection_check_boxes :user_ids, User.all, :id, :name

Upvotes: 1

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