CODEWITHSUNDEEP
ruby-on-railsformsnested-attributes
Hassen
Hassen

Reputation: 7654

Rails add nested attribute id to form which leads to mass assignment

Strange! When I use fields_for to declare a nested attribute field, rails adds a hidden attribute with the id of the nested attribute (to perform an update):

= form_for @opinion do |f|
    = f.fields_for :client do |client_f|
        = client_f.text_field :name

Gives me:

<input name="opinion[client_attributes][name]" type="text" />
<input name="opinion[client_attributes][id]" type="hidden" value="4" />

This leads to:

Can't mass-assign protected attributes: client_attributes

Of course, here are my models :

class Opinion < ActiveRecord::Base

    attr_accessible :content
    attr_accessible :client_id

    validates :content, :presence => true, :length => { :maximum => 2048 }

    belongs_to :client
    accepts_nested_attributes_for :client

end

class Client < ActiveRecord::Base

    attr_accessible :name

    validates :name, :presence => true, :length => { :maximum => 64 }

    has_many :opinions

end

Is is a problem with the rails view, or a model problem ?

Any idea how to fix that? Thanks in advance.

Upvotes: 1

Views: 832

Answers (1)

code4j
code4j

Reputation: 4636

Add :client_attributes into :attr_accessible

:attr_accessible is used to identify which fields are opened for mass-assignment.

In the request you send to controller, there should be a parameter key called client_attributes to group the details of clients. You must make this one enable for mass-assignment so you can put the details of clients to update in the way of mass-assignment.

Upvotes: 4

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