Nested Attributes in Rails 3

[Avi]

Hello All,

I am stuck in nested attributes:-

here is my code :-

User.rb :-

has_one :address

accepts_nested_attributes_for :address

Address.rb :-

belongs_to :user

_form.html.erb:-

<%= simple_form_for @user ,:validate => true do |f| %>

           <%= f.fields_for :address do |d| %>

         <%= d.input :first_name %>

         <%= d.input :last_name %>

          <% end %>

          <%= f.input :email %>

 <% end %>

in user_controller.rb:-

In new as well as create method I tried with:-

@user = User.new

@user.build_profile

But still I am getting the error as :-

Can't mass-assign protected attributes: address_attributes

Any Suggestions ??

Thanks....

[Unni]

add

attr_accessible :address_attributes

in your model.

Only the fields that you specify via attr_accessible, are open to mass assignment.

Unni

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Unni

[avinash behera]

I didn't get this :-

attr_accessible :address_attributes

Why we need to define this in user.rb?

We already have has_one relation. Will it not be accessing those attributes in address model automatically? 

[Jim Ruther Nill]

On Wed, Nov 21, 2012 at 12:56 PM, avinash behera <aavinas...@gmail.com> wrote:

I didn't get this :-

attr_accessible :address_attributes

Why we need to define this in user.rb?

We already have has_one relation. Will it not be accessing those attributes in address model automatically? 

fields_for uses <association>_attributes as the name of the fields when you are using

accepts_nested_attributes_for :association so you need to define this in attr_accessible

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[Unni]

http://stackoverflow.com/a/3283404/1731232

http://api.rubyonrails.org/classes/ActiveModel/MassAssignmentSecurity/ClassMethods.html#method-i-attr_accessible

Unni

[Rameshwar Vyevhare]

http://currentricity.wordpress.com/2011/09/04/the-definitive-guide-to-accepts_nested_attributes_for-a-model-in-rails-3/

[avinash behera]

I tried with that. But somewhere validations are failing. I had dropped my db. Trying to create a user. But in console it says:

User already exists.

Not sure.

In controller I have mentioned as @user.build_profile. Is it fine?

& in erb file, I am using simple_form_for.

So can we use fields_for there?

[Unni]

@user = User.new

@user.build_profile

Is that all what you have in the controller in create action? 

@user = User.new(params[:user]) 

is what one would expect.

[avinash behera]

In new :-

@user = User.new

@user.build_address # here is it required while building the page ?

create :-

@user = User.new(params[:user])

@user.save

If I use build here, I am not getting those attributes present in address model in UI.

Sorry I have communicated wrong. This is the controller

[avinash behera]

Its working now. Its my fault.

I forgot to remove an attribute's validation which I moved from User model to Address model. There validation was failing.

Thanks for helping me out...

[Unni]

Cheers !

[Jinet]

hi..

im going to start learning ruby..now dont know even a single thing about ruby,,can anyone please suggest how to start learning..?

thank you..

jinet

[Colin Law]

On 21 November 2012 12:28, Jinet <jinet....@gmail.com> wrote:
>
> hi..
> im going to start learning ruby..now dont know even a single thing about
> ruby,,can anyone please suggest how to start learning..?
> thank you..

What has that got to do with the subject line (Nested Attributes in
Rails 3) and why have you posted a large message with many irrelevant
quoted lines?

You say you want to learn to use Ruby, but this is a Ruby on Rails
list so I assume you want to learn Ruby on Rails.
The answer is to start by working through a good rails tutorial such
as railstutorial.org (which is free to use online). I assume you
already know the basics of html, if not then start there.
Also work on your google skills, I am sure that a search for learning
ruby rails would have given you many useful answers.

If you want to ask more then please start a new thread with an
appropriate subject line.

Colin