CODEWITHSUNDEEP
ruby-on-railsformsdevisenestedprofiles
Nicolas Baissas
Nicolas Baissas

Reputation: 48

RoR : Nested forms with devise

I am new to RoR and I thought I could ask you some help. I didn't find the specific answer I am looking for.

I have a problem with a modelisation I want to make using Devise. Devise sets up a Member model, and I want to have a SuperMember model which have more attributes than Member, and some different views.

I want to set up a nested form to create a SuperMember, while automatically creating the Member account in the background.

Member.rb (generated by devise)

class Member < ActiveRecord::Base
  devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable
  attr_accessible :email, :password, :password_confirmation, :remember_me
end

SuperMember.rb

class Supermember < ActiveRecord::Base
  attr_accessible :first_name, :last_name
  belongs_to :member, :dependent => :destroy
  accepts_nested_attributes_for :member
end

Supermembers.controllers.rb

def new
@supermember = Supermember.new
  @supermember.member = Supermember.build

  respond_to do |format|
    format.html # new.html.erb
    format.json { render json: @supermember }
  end
end

def create
  @supermember = Supermember.new(params[:supermember])

  respond_to do |format|
  if @supermember.save
    format.html { redirect_to @supermember, notice: 'Supermember was successfully created.' }
    format.json { render json: @supermember, status: :created, location: @supermember }
  else
    format.html { render action: "new" }
    format.json { render json: @supermember.errors, status: :unprocessable_entity }
  end
end

I tried to create a nested form in order to generate both the member and the supermember :

<%= simple_form_for(@supermember) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :first_name %>
    <%= f.input :last_name %>
  </div>

    <% # Devise member %>
    <%= f.fields_for :member do |m| %>
  <div class="form-inputs">
    <%= m.input :email, :required => true, :autofocus => true %>
    <%= m.input :password, :required => true %>
    <%= m.input :password_confirmation, :required => true %>
  </div>
    <% end %>

  <div class="form-actions">
    <%= f.button :submit %>
  </div>
<% end %>

The problem is that when I submit this form, I get the following error message :

Can't mass-assign protected attributes: member_attributes

Application Trace | Framework Trace | Full Trace
  app/controllers/supermembers.rb:44:in `new'
  app/controllers/supermembers.rb:44:in `create'

I really don't understand how to fix it. Could you help me on this one? Thank you very much!

Upvotes: 1

Views: 197

Answers (2)

John Naegle
John Naegle

Reputation: 8257

You need to allow Supermember to accept mass assignment of the member attributes

class Supermember < ActiveRecord::Base
  attr_accessible :first_name, :last_name, :member_attributes
  ...
end

Upvotes: 2

davidrac
davidrac

Reputation: 10738

If what you're trying to do is add attributes to member, then it is perfectly OK to do so. There's no need to create a supermember for that purpose only (of course, if you have some other agenda then go ahead...).

Device doesn't care if you add attributes to the model, even if it was generated by it.

Upvotes: 0

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