similar to: Help with JSONified objects from ActiveRecord

Someone asked me in IRC if javascript can access ActiveRecord properties. At first, this seemed like a silly request. But then I remember JSON and thought, why can''t you? I implemented a quick ActiveRecord -> JSON converter using the ruby-json gem. http://rafb.net/paste/results/Yixi5I21.html One problem was that I have to call .to_s to convert everything to a format for JSON.

Title: Nested serialization with to_json and to_xml with array and hash element class Person < ActiveRecord::Base has_one :address has_one :job def office() return "Executive_Suite" end end class Address < ActiveRecord::Base belongs_to :person end class Job < ActiveRecord::Base belongs_to :person has_one :paygrade def Title return "Engineer" end end

I am using RoR ActiveRecord polymorphic inheritance and was wondering if it''s possible to access the base class'' association methods in the invocation of either to_xml or to_json without having to depict the base class data in the serialized string. Here are my classes: # base class class Asset < ActiveRecord::Base belongs_to :resource, :polymorphic => true

hi, i want to return to_json with ''only'' and also filtered.so i tried various ways, but none of them are really good: A)#OK , but filter missing format.json { render :json => @project.to_json(:only => [:title ], :include=> { :tasks => {:only=>[:id,:title] } } ) } B)#Not OK > filter does not work, format.json { render :json => @project.to_json(:only

Question: Hi, our company is using Ruby 1.8.6 with Rails 2.2.2. Does anyone know we can explicitly specify what encoding to use when calling to_json() or to_xml() methods? Problem: We have some multibyte characters in our database. For example we have a table with a name column that has this French accented e: Café Records. When we serialize this object using ActiveRecord''s to_xml()

I''d really like to see just 2 more functional changes to the JSON serialization/encoding before we get to Rails 2.0. First, and I think this is really crucial because without it all the efforts to output JSON from ActiveRecord objects would have been half in vain, is to allow us to do this in controllers: @authors = Author.find(:all) render :json => @authors.to_json(:only =>

Originally posted on github, reported to the right place. I would like to open a discussion about how `to_json` and `as_json` operates in Rails from a performance standpoint. I''m using Rails 3.2 but this issue applies to almost all versions of Rails. Our use case presents the challenge in sending out potentially large JSON (or XML, but we''ll focus on JSON rendering here)

hi , all under rails 2.0 aotianlong@aotianlong:~/workspace/killer$ ruby script/console Loading development environment (Rails 2.0.1) >> {:user=>"aotianlong"}.to_json => "{\"user\": \"aotianlong\"}" >> user = User.find :first => #<User id: 1, uname: "aotianlong"> >> user.to_json =>

Hello, ActiveSupport::JSON::Variable.to_json is the only to_json without an "options" parameter. Is this intended? For example, this code in a .rjs page[@user.dom_id].visual_effect :drop_out, :afterFinish => ActiveSupport::JSON::Variable.new("foo") fails with ActionView::TemplateError: wrong number of arguments (1 for 0) On line #7 of

I installed the JSON gem because I wanted the JSON parser. Before installing the JSON gem, overloading worked fine. Before I remove it, I''d like to see if anyone has an idea of what is going on. It''s the only JSON parser I''m aware of, so it would be a bummer if it didn''t work. After installing, if I overload the to_json method in the class, it gives me the

I tried to implement the "Rendering JSON in actions" example from http://wiki.rubyonrails.com/rails/pages/HowtoGenerateJSON : @headers["Content-Type"] = "text/plain; charset=utf-8" data = { :foo => ''bar'', :etc => ''rez'' } render :text => data.to_json When I try to decode this in javascript with

I am using Rails 2.0.2 and trying to use to_json to generate json. I notice several problems. 1) datetime field such as created_at mapped to "created_at": {} 2) :except does not work, @post.to_json(:except => [:created_at, :updated_at] still gives me "created_at": {}, "update_at": {} 3) problem with escaped char mapping: ''<'' mapped to

The way Rails handles root nodes in JSON and XML serialization is inconsistent. This has been discussed before: https://rails.lighthouseapp.com/projects/8994/tickets/2584-232-activeresource-json-doesnt-send-parameters-with-root-node This seems mostly taken care of with ActiveModel::Base.include_root_in_json, especially if/when it ends up in ActiveResource. However, there is also the issue of how

Hi, I would like to import a serialized object (from a JSON export) inside my database. It work fine if for instance I do: >> l = Yea.create(:title => "foo bar") => #<Yea id: 3, title: "foo bar", created_at: "2010-07-05 21:44:54", updated_at: "2010-07-05 21:44:54"> >> j = l.to_json =>

Hi all, I''m working on a Backbone.js single page app with Rails 3.1, and in an attempt to save on HTTP requests, I want to embed initial data set in a HTML document that is sent back to the browser after successful login. I was thinking I can simply convert my ruby object to JSON, then HTML escape resulting string of JSON, and then use that as a value for JavaScript variable. Something

Hey, I''ve tried every trick I can find, yet I''m still unable to get the json gem and ActiveSupport to play nice. No matter in which order I load json and active support, I still end up with: NoMethodError: undefined method `[]'' for #<JSON::Ext::Generator::State:0x104b7fac0> I''m trying to use the JSON object directly, *not* as a ActiveSupport backend:

Hi, I am trying to convert a hash to JSON using ActiveSupports built in .to_json. I am doing similar to the example below but are there certain strings that could go in place of ''bar'' or ''rez'' that will break the to_json method? I am using a very long string from rjs output in place of ''bar''. Perhaps .to_json is not ready yet? Thanks, Peter

Hey there I was scratching my head over why my application breaks when I run on a local server but works on my remote server. It turns out that my local server is Rails 2.0.2 and my remote server is 1.2.3 and I expect the tag "attributes" to be passed with a json stream, before parsing. Unfortunately, this was dropped in 2.0.2. Is there any documentation on this? Any way to get it back?

Hello from a Ruby on Rails beginner! I''ve been trying to pass some data to a variable in Javascript by using json. Seems like the Javascript variable doesn''t receive the data correctly. This is the code in controller. @courses variable find the data from database. class CoursesController < ApplicationController def index @courses = Course.find(:all) end end This

Hello, I''m working on a Rails app which has a REST API. I manage two formats JSON and XML. Very often to simplify the use if the API, I''m making includes. But when you add params to to_json and to_xml like :only, :except, it''s not only applied on the root object but on all the objects included. Do you know libs or methods to answer to these different problems: * Tell