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Manivannan J

2013-Mar-15 14:53 UTC

Rails 3 How to assign the value to nested attributes before calling save in update action

I am using Rails 3.0.9 and Ruby 1.9.2

Models associations are

document.rb
    has_many :sections
    accepts_nested_attributes_for :sections, :allow_destroy => :true, 
:reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }

section.rb
    belongs_to :document
    has_many :paragraphs, :dependent => :destroy
    has_many :contents :through => :paragraphs
    validates :user_id, :presence =>  { :message => "Must be
filled" }

paragraph.rb
    attr_accessible :user_id, :section_id, :content_id
    belongs_to :section
    belongs_to :content
    validates :user_id, :section, :content, :presence =>  { :message => 
"Must be filled" }

paragraphs table just like a intermediate table for sections and contents 
and I want to save records in documents, sections and paragraphs table 
using single form submission.

_form.html.erb

    <%= form_for @document, :validate => true do |f| %>
    <%= f.error_messages %>
    <div><%= f.text_field :name %></div>
    
    <% f.fields_for :sections do |builder| %> 
    <div><%= builder.text_field :name %></div>
    <div><%= builder.select :content_ids, Content.all.collect {|p| [ 
p.name, p.id ] },{:prompt => "Please Select"}, {:class =>
"nhs_select",
:multiple => true}  %></div>
        <% end %>
        <%= f.submit :submit%>
   <% end %>


Example parameters when submiting the form
    {"document"=>{"name"=>"sdf", 
"sections_attributes"=>{"0"=>{"name"=>"sdf",
"description"=>"sdf",
"_destroy"=>"0", "content_ids" =>
["1", "2"]}}, "commit"=>"Create
Document"}

In additionally, I should need to update current_user''s id to user_id 
column of paragraphs table.

def create
    @document = Document.new
    @document.attributes = params[:document]
    @document.sections.each {|section| 
      section.user_id = current_user.id 
      section.paragraphs.each {|paragraph| paragraph.user_id = 
current_user.id}
    }
    if @document.save!
      # success
    else
      render :action => ''new''
    end
end

*Problem 1:*

At first, I submit the form, rails render new form without error message 
even I have implemented code to display error messages.

then again clicked submit button, action goes to update method. But it 
should go to new action.

I inspected in console, the inserted records were rollbacked but still the 
ID is retain in object.

Example: <form id="edit_document_6" class="edit_document"
method="post"
action="/documents/6" accept-charset="UTF-8">

*Problem 2:*

Documentation said that the changes are not saved to the database when 
assigning the attributes as like user.attributes = {:name => “Rob”}. 

but my case validation is triggered when assigning the attributes so I 
can''t assign the value to user_id column in paragraph object before
calling
save method

@document.attributes =
{"sections_attributes"=>{"0"=>{"name"=>"sdf",
"content_ids" => ["1", "2"]}}
or
section = Section.first
section.attributes = {"content_ids" => ["1",
"2"]}

How to assign the value to *user_id* in paragraph object before calling 
save method

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Manivannan J

2013-Mar-15 14:55 UTC

head link

Re: Rails 3 How to assign the value to nested attributes before calling save in update action

Console output:

Started POST "/documents" for 127.0.0.1 at 2013-03-15 19:17:12 +0530
  Processing by DocumentsController#create as HTML
  Parameters: {"utf8"=>"✓", 
"authenticity_token"=>"fvjouziWyDPCsTIJQvguXG1vvAIGy8ej5hR+69TTeIQ=",
"document"=>{"name"=>"sample",
"sections_attributes"=>{"0"=>{"name"=>"one",
"content_ids"=>["1", "2"]}}},
"commit"=>"submit"}
  Content Load (0.0ms)  SELECT `contents`.* FROM `contents` WHERE 
`contents`.`id` IN (1, 2)
  SQL (0.1ms)  BEGIN
  SQL (0.0ms)  COMMIT
  SQL (0.0ms)  BEGIN
  SQL (0.3ms)  describe `documents`
  AREL (0.1ms)  INSERT INTO `documents` (`name`, `created_at`, 
`updated_at`) VALUES (''sample'', ''2013-03-15
13:47:12'', ''2013-03-15
13:47:12'')
  SQL (0.3ms)  describe `sections`
  AREL (0.1ms)  INSERT INTO `sections` (`name`, `document_id`, 
`created_at`, `updated_at`) VALUES (''one'', 2,
''2013-03-15 13:47:12'',
''2013-03-15 13:47:12'')
  Section Load (0.3ms)  SELECT `sections`.* FROM `sections` WHERE 
`sections`.`id` = 3 LIMIT 1
  Content Load (0.1ms)  SELECT `contents`.* FROM `contents` WHERE 
`contents`.`id` = 1 LIMIT 1
  SQL (72.5ms)  ROLLBACK
  Content Load (0.1ms)  SELECT `contents`.* FROM `contents`
Rendered documents/_form.html.erb (4.8ms)
Rendered documents/new.html.erb within layouts/application (8.7ms)


Started POST "/documents/2" for 127.0.0.1 at 2013-03-15 19:17:48 +0530
  Processing by DocumentsController#update as HTML
  Parameters: {"utf8"=>"✓", 
"authenticity_token"=>"fvjouziWyDPCsTIJQvguXG1vvAIGy8ej5hR+69TTeIQ=",
"document"=>{"name"=>"sample",
"sections_attributes"=>{"0"=>{"name"=>"one",
"content_ids"=>["1", "2"]}}},
"commit"=>"submit", "id"=>"2"}
  Document Load (0.2ms)  SELECT `documents`.* FROM `documents` WHERE 
`documents`.`id` = 2 LIMIT 1
Completed 404 Not Found in 10ms

ActiveRecord::RecordNotFound (Couldn''t find Document with ID=2):
  app/controllers/documents_controller.rb:30:in `update''


On Friday, March 15, 2013 8:23:31 PM UTC+5:30, Manivannan J
wrote:>
> I am using Rails 3.0.9 and Ruby 1.9.2
>
> Models associations are
>
> document.rb
>     has_many :sections
>     accepts_nested_attributes_for :sections, :allow_destroy => :true, 
> :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
>
> section.rb
>     belongs_to :document
>     has_many :paragraphs, :dependent => :destroy
>     has_many :contents :through => :paragraphs
>     validates :user_id, :presence =>  { :message => "Must be
filled" }
>
> paragraph.rb
>     attr_accessible :user_id, :section_id, :content_id
>     belongs_to :section
>     belongs_to :content
>     validates :user_id, :section, :content, :presence =>  { :message
=>
> "Must be filled" }
>
> paragraphs table just like a intermediate table for sections and contents 
> and I want to save records in documents, sections and paragraphs table 
> using single form submission.
>
> _form.html.erb
>
>     <%= form_for @document, :validate => true do |f| %>
>     <%= f.error_messages %>
>     <div><%= f.text_field :name %></div>
>     
>     <% f.fields_for :sections do |builder| %> 
>     <div><%= builder.text_field :name %></div>
>     <div><%= builder.select :content_ids, Content.all.collect {|p|
[
> p.name, p.id ] },{:prompt => "Please Select"}, {:class =>
"nhs_select",
> :multiple => true}  %></div>
>         <% end %>
>         <%= f.submit :submit%>
>    <% end %>
>
>
> Example parameters when submiting the form
>     {"document"=>{"name"=>"sdf", 
>
"sections_attributes"=>{"0"=>{"name"=>"sdf",
"description"=>"sdf",
> "_destroy"=>"0", "content_ids" =>
["1", "2"]}}, "commit"=>"Create
Document"}
>
> In additionally, I should need to update current_user''s id to
user_id
> column of paragraphs table.
>
> def create
>     @document = Document.new
>     @document.attributes = params[:document]
>     @document.sections.each {|section| 
>       section.user_id = current_user.id 
>       section.paragraphs.each {|paragraph| paragraph.user_id = 
> current_user.id}
>     }
>     if @document.save!
>       # success
>     else
>       render :action => ''new''
>     end
> end
>
> *Problem 1:*
>
> At first, I submit the form, rails render new form without error message 
> even I have implemented code to display error messages.
>
> then again clicked submit button, action goes to update method. But it 
> should go to new action.
>
> I inspected in console, the inserted records were rollbacked but still the 
> ID is retain in object.
>
> Example: <form id="edit_document_6"
class="edit_document" method="post"
> action="/documents/6" accept-charset="UTF-8">
>
> *Problem 2:*
>
> Documentation said that the changes are not saved to the database when 
> assigning the attributes as like user.attributes = {:name => “Rob”}. 
>
> but my case validation is triggered when assigning the attributes so I 
> can''t assign the value to user_id column in paragraph object
before calling
> save method
>
> @document.attributes =
{"sections_attributes"=>{"0"=>{"name"=>"sdf",
> "content_ids" => ["1", "2"]}}
> or
> section = Section.first
> section.attributes = {"content_ids" => ["1",
"2"]}
>
> How to assign the value to *user_id* in paragraph object before calling 
> save method
>
>
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Manivannan J

2013-Mar-15 14:56 UTC

head link

Re: Rails 3 How to assign the value to nested attributes before calling save in update action

Console Output

Started POST "/documents" for 127.0.0.1 at 2013-03-15 19:17:12 +0530
  Processing by DocumentsController#create as HTML
  Parameters: {"utf8"=>"✓", 
"authenticity_token"=>"fvjouziWyDPCsTIJQvguXG1vvAIGy8ej5hR+69TTeIQ=",
"document"=>{"name"=>"sample",
"sections_attributes"=>{"0"=>{"name"=>"one",
"content_ids"=>["1", "2"]}}},
"commit"=>"submit"}
  Content Load (0.0ms)  SELECT `contents`.* FROM `contents` WHERE 
`contents`.`id` IN (1, 2)
  SQL (0.1ms)  BEGIN
  SQL (0.0ms)  COMMIT
  SQL (0.0ms)  BEGIN
  SQL (0.3ms)  describe `documents`
  AREL (0.1ms)  INSERT INTO `documents` (`name`, `created_at`, 
`updated_at`) VALUES (''sample'', ''2013-03-15
13:47:12'', ''2013-03-15
13:47:12'')
  SQL (0.3ms)  describe `sections`
  AREL (0.1ms)  INSERT INTO `sections` (`name`, `document_id`, 
`created_at`, `updated_at`) VALUES (''one'', 2,
''2013-03-15 13:47:12'',
''2013-03-15 13:47:12'')
  Section Load (0.3ms)  SELECT `sections`.* FROM `sections` WHERE 
`sections`.`id` = 3 LIMIT 1
  Content Load (0.1ms)  SELECT `contents`.* FROM `contents` WHERE 
`contents`.`id` = 1 LIMIT 1
  SQL (72.5ms)  ROLLBACK
  Content Load (0.1ms)  SELECT `contents`.* FROM `contents`
Rendered documents/_form.html.erb (4.8ms)
Rendered documents/new.html.erb within layouts/application (8.7ms)


Started POST "/documents/2" for 127.0.0.1 at 2013-03-15 19:17:48 +0530
  Processing by DocumentsController#update as HTML
  Parameters: {"utf8"=>"✓", 
"authenticity_token"=>"fvjouziWyDPCsTIJQvguXG1vvAIGy8ej5hR+69TTeIQ=",
"document"=>{"name"=>"sample",
"sections_attributes"=>{"0"=>{"name"=>"one",
"content_ids"=>["1", "2"]}}},
"commit"=>"submit", "id"=>"2"}
  Document Load (0.2ms)  SELECT `documents`.* FROM `documents` WHERE 
`documents`.`id` = 2 LIMIT 1
Completed 404 Not Found in 10ms

ActiveRecord::RecordNotFound (Couldn''t find Document with ID=2):
  app/controllers/documents_controller.rb:30:in `update''

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Rails - Mar 2013 - Rails 3 How to assign the value to nested attributes before calling save in update action

Rails 3 How to assign the value to nested attributes before calling save in update action

Re: Rails 3 How to assign the value to nested attributes before calling save in update action

Re: Rails 3 How to assign the value to nested attributes before calling save in update action