CODEWITHSUNDEEP
ruby-on-rails-3mongoidnested-attributes
makaroni4
makaroni4

Reputation: 2281

Nested attributes problem in rails 3 with mongoid (nested objects aren`t saved)

So I have a simple application as in RailsCast about nested forms. and a problem is that when I submit the form (with survey and questions) the questions are not saved.

My models (Survey, that has many Questions):

class Survey
  include Mongoid::Document
  field :name
  has_many :questions, :dependent => :destroy
  accepts_nested_attributes_for :questions, :allow_destroy => true
end

class Question
  include Mongoid::Document
  field :content
  belongs_to :survey
end

and Survey Controller:

def new
    @survey = Survey.new
    3.times {@survey.questions.build}
....

and a view:

<%= form_for(@survey) do |f| %>
    <%= f.fields_for :questions do |builder| %>
    <%= builder.label :content, "Question" %><br />
    <%= builder.text_area :content, :rows => 3 %><br />
    <%= builder.check_box :_destroy %>
    <%= builder.label :_destroy, "Remove Question" %>
    <% end %>
...

In my log I have:

    Started POST "/surveys" for 127.0.0.1 at 2011-05-24 13:26:51 +0400
  Processing by SurveysController#create as HTML
  Parameters: {"utf8"=>"G£ô", "authenticity_token"=>"tX0FfMiLbh1BwjuY4CuvAKt2UpTraY3vmdo58ocBnos=", "survey"=>{"name"=>"
Rails", "questions_attributes"=>{"0"=>{"content"=>"Are you fond of Rails?", "_destroy"=>"0"}, "1"=>{"content"=>"Rails is
 the best, ha?", "_destroy"=>"0"}, "2"=>{"content"=>"How many railscasts have you watched?", "_destroy"=>"0"}}}, "commit
"=>"Create Survey"}
MONGODB nested_attributes_development['surveys'].insert([{"name"=>"Rails", "_id"=>BSON::ObjectId('4ddb79dba5372914380000
69')}])
Redirected to http://localhost:3000/surveys/4ddb79dba537291438000069

Upvotes: 3

Views: 3040

Answers (1)

makaroni4
makaroni4

Reputation: 2281

The answer was found in google groups so I just duplicate it:

MONGODB 
nested_attributes_development['surveys'].insert([{"name"=>"Rails", 
"_id"=>BSON::ObjectId('4ddb79dba5372914380000 
69')}])

This does not save to question collections which is not done with mongoid in default. Just add has_many :questions, :dependent => :destroy , :autosave => true This should work.

cf. http://mongoid.org/docs/upgrading.html for further details.

Upvotes: 7

Related Questions