strong parameters not accepting array

Question

I have this in my view which is a multiselect checkbox

Model

class User < ActiveRecord::Base
  has_many :user_roles, :dependent => :destroy
  accepts_nested_attributes_for :user_roles, :allow_destroy => true
  has_many :roles, :through => :user_roles
end

view

<%= check_box_tag 'user[role_ids][]', role.id, user.blank? ? nil : user.roles.include?(role) ,id: dom_id(role)%>

the strong parameters for this is written as

  def user
    params.require(:user).permit(:first_name,{:role_ids => []})
  end

But on create it says

Processing by Admin::UsersController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"+y8iWya5KIILqS0embEUEZuClycXq0O9Q4pA+MnbM0g=", "user"=>{"first_name"=>"", "last_name"=>"", "email"=>"[email protected]", "language"=>"en", "access_level_id"=>"1", "role_ids"=>["", "1", "", "5", "", "", ""], "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Create user"}

Unpermitted parameters: role_ids
Unpermitted parameters: role_ids
Unpermitted parameters: role_ids
Unpermitted parameters: role_ids

Any clue why is it not accepting the array of role_ids which is coming from form?

Community · Accepted Answer · 2017-05-23 12:02:39Z

21

See the Rails Strong Parameters documentation regarding nested attributes.

The correct format is:

params.permit(:name, {:roles => []}, ...)

~~AnkitG's solution worked for me in Rails 4 using the Role Model gem for my user model. My user controller's implementation of _params ended up looking like:~~

def user_params # Bug with permit for nested arrays... @see https://stackoverflow.com/a/17880288/2631472 params.require(:user).permit(:first_name, :last_name, :middle_name).tap do |whitelisted| whitelisted[:roles] = params[:user][:roles] end end

edited May 23, 2017 at 12:02

CommunityBot

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answered Jul 29, 2013 at 18:53

rypit

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Comments

Benjamin Bouchet · Accepted Answer · 2013-07-26 10:49:41Z

8

This should work

params.require(:user).permit(:first_name, :role_ids => [])

answered Jul 26, 2013 at 10:49

Benjamin Bouchet

13.2k2 gold badges43 silver badges74 bronze badges

4 Comments

Benjamin Bouchet Over a year ago

paste your create method pls

AnkitG Over a year ago

created a GIST here . Please have a look

Slicedpan Over a year ago

can you post error message when you do it this way? I tried it in the console and it works correctly (using the parameters in your question)

quantumpotato Over a year ago

How do I specify role_ids as a separate key?

AnkitG · Accepted Answer · 2013-07-26 11:41:03Z

7

Answering myself, I got it working not directly, but the below method from the Strong Parameters issues discussion helped me in converting a normal parameter to a whitelisted one.

def user_params
  params.require(:user).permit(:first_name).tap do |whitelisted|
    whitelisted[:role_ids] = params[:user][:role_ids]
  end
end

edited Jul 26, 2013 at 11:41

answered Jul 26, 2013 at 11:35

AnkitG

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