Nested Attributes in Rails 3

Rails
1

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…

2

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?

3

add

attr_accessible :address_attributes

in your model.

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

Unni

On Wed, Nov 21, 2012 at 10:02 AM, Avi [email protected] wrote:

<% end %>
Any Suggestions ??
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Unni

4

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

On Wed, Nov 21, 2012 at 10:31 AM, Jim Ruther N. [email protected]
wrote:

Why we need to define this in user.rb?

assignment.

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

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Unni

5

On Wed, Nov 21, 2012 at 12:56 PM, avinash behera
[email protected]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 _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

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

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

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6

s_nested_attributes_for-a-model-in-rails-3/

From: Unni [email protected]
Reply-To: [email protected]
Date: Wednesday, 21 November 2012 10:44 AM
To: [email protected]
Subject: Re: [Rails] Nested Attributes in Rails 3

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

On Wed, Nov 21, 2012 at 10:31 AM, Jim Ruther N. [email protected]
wrote:

in address model automatically?

Hello All,
belongs_to :user

To post to this group, send email to [email protected].
“Ruby on Rails: Talk” group.
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Unni

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7

@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.

On Wed, Nov 21, 2012 at 11:17 AM, avinash behera
[email protected]wrote:

      <% end %>

Can’t mass-assign protected attributes: address_attributes
[email protected].

For more options, visit https://groups.google.com/groups/opt_out.
[email protected].

[email protected].
“Ruby on Rails: Talk” group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
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Unni

8

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?

9

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

10

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…

On Wed, Nov 21, 2012 at 11:46 AM, avinash behera

11

Cheers !

On Wed, Nov 21, 2012 at 11:55 AM, avinash behera
[email protected]wrote:

Sorry I have communicated wrong. This is the controller

& in erb file, I am using simple_form_for.

here is my code :-

@user = User.new

Groups “Ruby on Rails: Talk” group.
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Unni

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Unni

12

On 21 November 2012 12:28, Jinet [email protected] 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

13

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

On 21 November 2012 11:59, Unni [email protected] wrote:

@user = User.new

      <% end %>

Can’t mass-assign protected attributes: address_attributes
[email protected].

For more options, visit https://groups.google.com/groups/opt_out.
To unsubscribe from this group, send email to
visit my blog at http://jimlabs.heroku.com

To post to this group, send email to

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