Rails form_for with checkboxes, assign values to array-type variable

Question

Rails 4.1.4, Ruby 2.1.2. Postgres.

I have a user model which has a roles attribute. The roles attribute is a postgres array type. I am trying to create a form with checkboxes of different role options, and a user can select which roles they fit into. If they select the 'director' checkbox, their roles attribute, now you should see:

@user.roles = ['director'].

I am trying to use a form_for, but maybe this is not possible.

Does anyone know how to do this?

form_for(@user) do |f|
    f.check_box :roles ...?

How you get the collection object of all roles for user to choose? — Jaugar Chang
– Jaugar Chang, Commented Sep 2, 2014 at 9:04

Rajarshi Das · Accepted Answer · 2014-09-02 07:05:19Z

1

You can try this

 form_for(@user) do |f|
   f.collection_check_boxes(:roles, @user.roles, :id, :labeling_method )

more details

http://apidock.com/rails/v4.0.2/ActionView/Helpers/FormOptionsHelper/collection_check_boxes

answered Sep 2, 2014 at 7:05

Rajarshi Das

12.4k7 gold badges53 silver badges88 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Jaugar Chang Over a year ago

Seems you miss the third parameter , it should be a collection object of all roles.

Rajarshi Das Over a year ago

Nope I did @user.roles ...it is form object ......so as you told collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) but here form_for with form object f so f.collection_check_boxes :author_ids, Author.all, :id, :name_with_initial refer edgeapi.rubyonrails.org/classes/ActionView/Helpers/…

Jaugar Chang Over a year ago

Ok! I'm wrong. But still a suggestion use some other roles collectioin instead of @user.roles. There will be no check_box displayed for a new user.

Rajarshi Das Over a year ago

Thanks for your suggestion yes it should be good yes I can do but please see the question he already use @user.roles I thought it will be better to understand for him

Andrey Deineko · Accepted Answer · 2014-09-02 07:57:25Z

1

form_for(@user) do |f|
  f.check_box :roles, User::ROLES #assuming you have a constant ROLES holding your roles.

editing due to comment

edited Sep 2, 2014 at 7:57

answered Sep 2, 2014 at 6:59

Andrey Deineko

52.5k11 gold badges119 silver badges151 bronze badges

5 Comments

David A Over a year ago

How would I do this with roles that are not active record objects? They are simply strings (i.e. I simply want to add the string 'director' or 'admin' to the roles array if that check box is selected). I don't think I understand how to set up a User::ROLES constant that responds to an :id method.

Andrey Deineko Over a year ago

do you want to be able keep few roles in :role attribute, right? You can do f.check_box :roles, User::ROLES, {multiple: true }

David A Over a year ago

Rails error: wrong number of arguments (2 for 4..6). No, simply strings within an array.

Andrey Deineko Over a year ago

do you have this ROLES constant in User model?

Rajarshi Das Over a year ago

probably @user.roles

omgmakeme · Accepted Answer · 2015-10-14 15:32:37Z

0

Let's say you have some string constant in your User

<%= form.collection_check_boxes(:roles, USER::ROLES_STRINGS[access_if_you_need_from_this_constant_but_we_need_an_array_here].keys, :to_s, Proc.new{|l| USER::ROLE_STRINGS[access_if_you_need_from_this_constant_but_we_need_an_array_here][l]}) %>

Should work / get you close based on your structure!

answered Oct 14, 2015 at 15:32

omgmakeme

7666 silver badges12 bronze badges

Collectives™ on Stack Overflow

Rails form_for with checkboxes, assign values to array-type variable

3 Answers 3

4 Comments

5 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

4 Comments

5 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related