I'm unable to access view helpers in my rabl templates outside of a node block. This would be nice to conditionally include nodes to a json representation.

#index.json.rabl
collection @user_events

if user_signed_in?
  node :hello do
    "world"
  end
end

undefined method `user_signed_in?' for #<RablRails::Compiler:0x00000104564f28>

In api_behaviour I have the following error:

NoMethodError: undefined method `responder_default_template' for RablRails:Module

Should we use RablRails.configuration.responder_default_template instead ?

Hello,

In our Rail-based API-only app we are generating JSONs by rendering object directly.

There are cases when you want to render object outside Rails view context. For instance to render objects in the console or to create message queue payloads. For these situations, you can use RablRails.render as show below:

RablRails.render(object, template, :view_path => 'app/views', :format => :json) #=> "{...}

Recently we have started upgrading our Rails to 5.1.2 and as part of bundle update rabl-rails gem got updated to v 0.5.0 from 0.4.3 (bundle update output snippet)

Fetching rabl-rails 0.5.0 (was 0.4.3)
Installing rabl-rails 0.5.0 (was 0.4.3)

Now we are running our rspec and encountering following error:

     Failure/Error: RablRails.render(serializable_object, template.name, view_path: template.root_path_for_api_version.to_s, format: :json)
     
     NoMethodError:
       undefined method `render' for RablRails:Module

I compared the source-code and found that in v 0.4.3 RablRails::Renderer module exists, however in 0.5.0 tree it is removed

Found this commit 12a3f0f in which RablRails::Renderer module was removed.

Since that is removed what is the alternate approach to render the object directly? We are using this same approach of rendering the object directly across our API-only application. So it is very critical that we need this behaviour to be available.

Note: Ours API application is built on Rails but not using rails built-in api-only features.

Please suggest the possible fixes for this removed behaviour.

Is there a way, I can make this gem work with rails-api? More here: stackoverflow post

render json renders from as_json and how do I link it with app/views?

There isn't an engine for it, but is there currently a way to just return a Ruby hash? We often just want to get a pure Ruby hash representation of the data Rabl would produce. We opted to change to RablRails for the sake of speed, but can't due to not being able to render hashes.

I'd love to implement it myself with some guidance...

When using extends I'm getting the following error:

[FATAL] [2015-06-03 15:03]   ActionView::Template::Error (no implicit conversion of nil into String):
    1: collection :@contacts
    2: 
    3: extends 'contacts/show'
  app/views/contacts/index.json.rabl:3:in `_app_views_contacts_index_json_rabl__1238373977362342878_70108584054580'
  app/controllers/api/v1/contacts_controller.rb:5:in `index'

contacts/index.json.rabl:

collection :@contacts
extends 'contacts/show'

contacts/show.json.rabl

object :@contact
node(:id)        { |contact| contact.id.to_s }
attributes       :name

If I render only index, it works perfectly, but after rendering show and then rendering index again, it gives me the error. If I then change node(:id) { |contact| contact.id.to_s } to node(:id) { |c| c.id.to_s }it works again, until I render the show.
If I remove node(:id) { |contact| contact.id.to_s }it works perfectly normal
Index also works if I do object :contact(w/o the @) in show.json.rabl but then ofcourse the show method fails.

I'd like to use rabl-rails to render an object, but since the object responds to each, RablRails::Renderers::Base tries to render it as a collection. Here's code that reproduces the problem:

# app/views/controllers/config_controller.rb
class ConfigController < ApplicationController
  respond_to :json

  def show
    struct = Struct.new(:foo)
    @config = struct.new("bar")
  end
end

# app/views/config/show.json.rabl
object :@config
attribute :foo

I would expect this to render {"foo":"bar"} since @config.foo returns "bar". However, because @config responds to each, Renderers::Base#render calls render_collection on it instead of render_resource, yielding an error:

undefined method `foo' for "bar":String
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:68:in `block in render_resource'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:64:in `each'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:64:in `inject'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:64:in `render_resource'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:116:in `block in render_collection'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:116:in `each'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:116:in `map'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:116:in `render_collection'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:32:in `block in render'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:55:in `render_with_cache'
  (gem) rabl-rails-0.3.3/lib/rabl-rails/renderers/base.rb:31:in `render'
  ...

(You can see the complete backtrace here: https://gist.github.com/jrunning/9279963)

This might seem like a contrived example, but I ran into it in a real scenario (I was trying to render attributes of an ActiveSupport::OrderedOptions rather than a struct). The same issue would manifest if someone defined each on an ActiveRecord model.

I'm not sure what the best solution is. Perhaps object could take an option that would explicitly tell it not to render the object as a collection?

For now my only option seems to be falling back to the regular rabl gem, which lacks some of the Railsy niceties of rabl-rails.

How do you pass locals in rabl-rails?
The syntax from the rabl gem doesn't work: extends('posts/show', :locals => { :hide_comments => true })
extends in rabl-rails seems to accept only one argument

The following

app/views/users/index.json.rabl

collection :@users
cache
extends "users/show"

will raise an error as such:

undefined method `cache_key' for #User::ActiveRecord_AssociationRelation:0x007fdee2c55350

Been trying a few variations with extends and partials, to no avail. Thanks for any suggestions!

I have been using Rabl and I thought I should give rabl-rails a try as it promises faster responses.
I am using public_activity gem which has a polymorphic belongs_to
belongs_to :trackable, :polymorphic => true

When I use child :trackable while using rabl, everything works as expected, and the key of the child object is actually the model name. But in rabl-rails the key comes as it is, i-e 'trackable' and its empty.

An example
with rable

{
    "type": "Event",
    "users": [{
        "id": 898,
    }],
    "time": "2013-09-10T15:31:12Z",
    "event": {
        "id": 27,
        "name": "Hold it",
    }
}

with rabl-rails

{
    "type": "Event",
    "users": [{
        "id": 898,
    }],
    "time": "2013-09-10T15:31:12Z",
    "trackable": null
}

I might be misunderstanding something, but it does appear that for my single node it is running the block twice. This may also be an issue with RABL as opposed to rabl-rails, just let me know if I'm in the wrong place.

Here's my complete show.json.rabl:

object :@gizmo
attributes :id, :title, :description, :template

node :data do |gg|
  Rails.logger.info "ONCE........................\n\n"
  gizmo_data_params.empty? ? {} : gg.execute(gizmo_data_params)
end

Here's the (redacted) JSON output:

{"gizmo":{"id":5,"title":"Title","description":null,"template":"infohub","data":{"infohub":{"options":{"start_date":"2014-11-14","end_date":"2014-11-20","fids":[],"cids":[]}}}}}

There's only 1 'data' node in the output, but when debugging (binding.pry) the #execute method, triggered from the RABL node, I see that it executes twice. The log statement also appears twice in the console for each request.

Should this be happening as a standard practice? Is there something about my case in particular that would cause this? Thanks for any help!

I'm getting:

uninitialized constant Rabl
...app/config/initializers/rabl.rb:1:in `<top (required)>'

The initializer in question starts off with

Rabl.configure do |config|

Not sure how exactly I need to reference

I'm trying to figure out how to use results caching with following rabl:

object false

child :employees => :data do
    extends "employees/_single"
end

node(:success) { true }
node(:total) { employees.size }

If I just add cache then run into error ActionView::Template::Error: undefined method 'cache_key' for nil:NilClass

If add cache with a block

object false

cache { |_| "#{ employees.cache_key }" }

child :employees => :data do
  extends "employees/_single"
end

node(:success) { true }
node(:total) { employees.size }

then it can't resolve employees: ActionView::Template::Error: undefined local variable or method 'employees' for RablRails::Renderers::JSON:Module

What's the right approach here?

I ran into this issue when I went into production and tested in both small and big apps in development.

controller

def list
  @client_applications = @account.client_applications.page(params[:page]).per(params[:per_page])
   @message = "Application list"
    render 'client_applications/index', status: :ok
end

index.json.rabl

object false

node(:client_applications) { partial('client_applications/_show', object: @client_applications) }

extends 'shared/success'

I made a request a request to the list action and this was the output the first time.
Server

Processing by Api::Web::V1::ClientApplicationsController#list as JSON
  Parameters: {"account_id"=>"5"}
  Account Load (0.6ms)  SELECT "accounts".* FROM "accounts" WHERE "accounts"."id" = 5 LIMIT 1
  ClientApplication Load (0.4ms)  SELECT "client_applications".* FROM "client_applications" WHERE "client_applications"."account_id" IN (5)
   (0.6ms)  SELECT COUNT(count_column) FROM (SELECT 1 AS count_column FROM "client_applications" WHERE "client_applications"."account_id" = 5 LIMIT 25 OFFSET 0) subquery_for_count 
  Rendered client_applications/index.json.rabl (5.0ms)
   (0.4ms)  SELECT COUNT(*) FROM "client_applications" WHERE "client_applications"."account_id" = 5
  CACHE (0.0ms)  SELECT COUNT(count_column) FROM (SELECT 1 AS count_column FROM "client_applications" WHERE "client_applications"."account_id" = 5 LIMIT 25 OFFSET 0) subquery_for_count 
Completed 200 OK in 244ms (Views: 16.5ms | ActiveRecord: 12.5ms)
{
    "account_id" => "5",
        "format" => "JSON",
    "controller" => "api/web/v1/client_applications",
        "action" => "list"
}

Response

{"status":"success","message":"Application list","client_applications":[]}

I made a second request to the same action and this was the output.
Server

Started POST "/private/applications/list" for 127.0.0.1 at 2013-01-24 14:23:54 -0500
Processing by Api::Web::V1::ClientApplicationsController#list as 
  Parameters: {"account_id"=>"5"}
  Account Load (0.4ms)  SELECT "accounts".* FROM "accounts" WHERE "accounts"."id" = 5 LIMIT 1
  ClientApplication Load (0.4ms)  SELECT "client_applications".* FROM "client_applications" WHERE "client_applications"."account_id" IN (5)
  Rendered client_applications/index.json.rabl (47.4ms)
Completed 500 Internal Server Error in 62ms

ActionView::Template::Error (nil is not a symbol):
    1: object false
    2:
    3: node(:client_applications) { partial('client_applications/_show', object: @client_applications) }
  app/views/client_applications/index.json.rabl:2:in `_app_views_client_applications_index_json_rabl___1939161566045685585_70366142492940'
  app/controllers/api/web/v1/client_applications_controller.rb:151:in `list'

Any subsequent request returned the same error. I restarted the server and it allowed me to make one request with a successful response and rest became errors again.

The trace showed the error pointing to this line in rabl-rails

[PROJECT_ROOT]/vendor/cache/rabl-rails/lib/rabl-rails/library.rb, line 18

Hi, I came across rabl-rails and wanted to use it because of the performance gains, but unfortunately, for some reason, it's not working in my Rails 4.1.8 app with Ruby 2.1.3, whereas the original rabl gem works. The only difference is the gems (and using collection @locations versus collection :@locations). When I used rabl-rails, the controller was rendering JSON instead of XML. Then when I replaced rabl-rails with rabl, everything was working fine.

I have no idea where to start looking to troubleshoot why rabl-rails doesn't work, but here is the source code:
https://github.com/smcgov/ohana-api-smc

Here is the rabl template:
https://github.com/smcgov/ohana-api-smc/blob/master/app/views/api/v1/locations/index.xml.rabl

Here is the controller:
https://github.com/smcgov/ohana-api-smc/blob/master/app/controllers/api/v1/locations_controller.rb

Note that this template now has rabl-specific stuff in it, but you can still reproduce the issue with just a basic template that only defines attributes.

I'm using Rails 3.2.17 on Mac OS, with RABL-rails v0.3.4.

When I set this configuration:

RablRails.configure do |config|
  config.exclude_nil_values = true
end

I receive:
NoMethodError: undefined methodexclude_nil_values=' for RablRails:Module`

I was following the 'Render object directly' wiki and it seems this method doesn't have access to view/path helpers. If it's possible to do so, could you include some sample code of how to include helpers in that direct call?

undefined method `user_path' for #<RablRails::Renderers::JSON:0x0000010530ec50>

If you can't get this to work in Rails 4.2. Adding require: false to your Gemfile resolves this issue. Your object appears nil the template otherwise.

If following syntax is used in template

child(:@notes => :data, :partial => 'notes/_single')

Child element will produce no output.

Workaround is

child({:@notes => :data}, :partial => 'notes/_single')

Recently I was working on a template with a parent / child... let's say Post / Author.

object :@post
attribute(:name)
child :author do
extends "author/base"
end

This will render the child block even if @post.author.nil?, which will throw an error.

Shouldn't child() be aware if the relationship is nil?

The original rabl gem allows the option

config.include_child_root = false

This is not possible with rabl-rails.
Also you can render an anonymous node in the original rabl with

node do |obj|
      { some_att: obj.some_val }
end

This is also not possible with rabl-rails as node have a mandatory node-name argument
If you supply nil as an argument to node, the node root will just be an empty string.

Is there any way to work around this?

I'm testing the responses with rspec. I previously had set up the views with the rabl gem but decided to try rabl-rails. All my tests were passing on using the rabl gem but once I made the switch to rabl-rails the tests started failing.

The weird thing is that they fail randomly and depending on the seed of the tests. I get the following error:

Failure/Error: post :list
     ActionView::Template::Error:
       can't convert nil into String
     # (eval):13:in `compile_source'
     # ./app/views/posts/index.json.rabl:2:in `_app_views_posts_index_json_rabl___1097657160476041507_70197771010180'
     # ./app/controllers/api/v1/posts_controller.rb:300:in `list'
     # ./spec/controllers/api/v1/posts_controller_spec.rb:218:in `block (4 levels) in <top (required)>'

Here's my view for that specific call:

object false
node(:posts) { partial('posts/_show', object: @posts) }
extends 'shared/success'

All my tests fail with that same error but the line # (eval):13:in 'compile_source' has different line numbers on different views.

Also, it is very random. Depending on the order of the tests, different views will fail but the errors are always the same. Any idea why this is happening?

Edit
Another thing to point out is that not all the views fail depending on the order. Certain views will fail sometimes but others will pass.

Hello,

I am trying to switch over from rabl, but I receive this error on all templates. On rabl it works fine.

Take this template for example, it just returns some ids.

collection @properties
attributes :id

I am also using oj gem on Rails 5.0.1.

Do I need to do anything else?

Thanks

Can we have it? Anything I can do to help?

Documentation states you can call this:

Rabl.render(object, template, :view_path => 'app/views', :format => :json)

However, it does not work. If :json is replaced with a string instead, it works

Rabl.render(object, template, :view_path => 'app/views', :format => 'json')

I switched from rabl to rabl-rails. It works great except during the tests (rspec).

My view:

object :@media

attributes :types

My test:

describe 'v1/medias/show' do
  it 'should render a valid json' do
    render # it fails here
    expect { JSON.parse(rendered) }.to_not raise_error(JSON::ParserError)
  end
end

The error:

 Failure/Error: render
     ActionView::Template::Error:
       undefined method `start_with?' for :__memoized:Symbol
     # ./app/views/v1/medias/show.rabl:2:in `_app_views_v__medias_show_rabl___3750579331352501291_55842580'
     # ./spec/views/v1/medias_view_show_spec.rb:14:in `block (2 levels) in <top (required)>'

Rails 4.1 is almost out already...

rabl-rails version 0.3.3
rails version 3.0.9

# my config/initializers/rabl_rails.rb
RablRails.configure do |config|
  config.xml_options = { :dasherize => false, :skip_types => true }
  config.default_responder_template = 'show'
end

stacktrace:

config/initializers/rabl_rails.rb:2:in `block in <top (required)>': undefined method `xml_options=' for RablRails:Module (NoMethodError)
    from /usr/lib/ruby/gems/1.9.1/gems/rabl-rails-0.3.3/lib/rabl-rails.rb:46:in `configure'
    from config/initializers/rabl_rails.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in `load'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in `block in load'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `block in load_dependency'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in `new_constants_in'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `load_dependency'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in `load'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/engine.rb:201:in `block (2 levels) in <class:Engine>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/engine.rb:200:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/engine.rb:200:in `block in <class:Engine>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/initializable.rb:25:in `instance_exec'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/initializable.rb:25:in `run'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/initializable.rb:50:in `block in run_initializers'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/initializable.rb:49:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/initializable.rb:49:in `run_initializers'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/application.rb:134:in `initialize!'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/application.rb:77:in `method_missing'
    from config/environment.rb:5:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `block in require'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `block in load_dependency'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in `new_constants_in'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `load_dependency'
    from /usr/lib/ruby/gems/1.9.1/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/application.rb:103:in `require_environment!'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.9/lib/rails/commands.rb:22:in `<top (required)>'
    from script/rails:7:in `require'
    from script/rails:7:in `<main>'

Is there a way to render MessagePack in RABL rails? Is there any documentation on how to write my own renderer for message pack?
It looks like there isn't any support because I get this error:
uninitialized constant RablRails::Renderers::MPAC

This
attributes :email, if: ->{ false }
outputs email when it shouldn't.
Using version 0.4.1

How to extends a view using a variable?

In my controller I define @resource and @extended_view and would like to extend using @extended_view which equals for exemple 'v1/events/show'

object :resource

attributes :id, :name

extends @extended_view

As I understood use_custom_responder make use of RablRails::Responder instead of ActionController::Responder

Doesn't seem to work (at least on RoR 4.2), you may want to add an active support hook into you railie.rb file ...

ActiveSupport.on_load :action_controller do
  self.responder = RablRails::Responder if RablRails.configuration.use_custom_responder
end

Edit : just realized responders have been extracted out from rails 4.2, the responders gem on its side has changed the prototype of the method api_behavior which doesn't take any parameter anymore

How do I add filters to the attributes?
Like the facebook api:
https://developers.facebook.com/tools/explorer

So u could select:
https://www.example.com/api/users/42?fields=id,username
Would return:
{
"id": 42,
"username": "Lephyrius"
}

Has anyone tried running rabl-rails 0.9.3 with Rails 4.1?

Since upgrading to Rails 4.1 any specs that have RABL templates are failing with the following error:

undefined method each' for nil:NilClass

Full Stack Trace:

rack (1.5.2) lib/rack/etag.rb:58:in `digest_body'
rack (1.5.2) lib/rack/etag.rb:26:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/flash.rb:254:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.1.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.1.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:621:in `call'
activerecord (4.1.0) lib/active_record/migration.rb:380:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.1.0) lib/active_support/callbacks.rb:82:in `run_callbacks'
actionpack (4.1.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.1.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.1.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.1.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.1.0) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/static.rb:64:in `call'
rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
railties (4.1.0) lib/rails/engine.rb:514:in `call'
railties (4.1.0) lib/rails/application.rb:144:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/Users/ryan/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
/Users/ryan/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
/Users/ryan/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'

My hunch is that this error is due to rabl-rails not supporting Rails 4.1 yet? I could be wrong and the error might be related to something else, thought I'd see if anyone else here had encountered this error with rabl-rails and Rails 4.1.

Hi,

Firstly, thanks for creating this great gem :) I'm hoping to get more performance out of my Rails app with this gem.

In Rabl, there is a Rabl.reset_source_cache! method to reset source caches when cache_sources is set to true.

Is there something similar for RablRails?

I use responders, gon and gon_responder gems to preload js variables, so with index action I have something like this:

class IvrsController < ApplicationController
  respond_to :html, :json
  def index
    respond_with ivrs, gon: { rabl: { as: :ivrs }}
  end
  ...
end

So I get ivrs collection rendered with gon in html format and plain json in json format.
But after 77f894b:

RENDERER_MAP = {
  'json'  => Renderers::JSON,
  'xml'   => Renderers::XML,
  'ruby'  => Renderers::Hash,
  'plist' => Renderers::PLIST
}.freeze
...
format = view.params[:format] ? view.params[:format].to_s.downcase : 'json'
RENDERER_MAP[format].render(compiled_template, view, locals)

with format html i get exception while trying nil.render(..)

What about fallback to json renderer?

format = view.params[:format] ? view.params[:format].to_s.downcase : 'json'
+ format = 'json' unless RENDERER_MAP.has_key? format
RENDERER_MAP[format].render(compiled_template, view, locals)

Is rabl-rails still 20% faster than rabl? If so what is the secret sauce 👍 Can we merge the same into rabl gem?

It feels that everyone should have only one gem to goto and contribute.

Thanks!

Any plans on adding more renderers, like plist? I'm using rabl now, was considering switching over for better performance, but i'm using the plist renderer for a couple endpoints. Is this something easy to add?

Hi

I tried improve performance app using "ActionController::Metal" in controller like http://newaperio.com/blog/19-fast-json-api-controllers-in-rails but using rabl-rails. I don't know as add the rabl's render

any tips?

Sorry, for posting here.

RablRails::Compiler#child doesn't seem to support blocks.

With the gem rabl, I currently have the following view:

object :@set

attributes :id, :name, :items

child(:items => :items) do |items|
    extends get_configuration_item_view(items)
end

get_configuration_item_view is a helper that returns the view able to render the items depending of the class of these items (dynamic because of polymorphism).

How to achieve that using rabl-rails ?

The wiki page https://github.com/ccocchi/rabl-rails/wiki/Using-custom-responder tells to use RablRails::Renderer::Context for including view helpers. This has been renamed to RablRails::Renderer::ViewContext

I've gotten to the point that my RSpec tests all pass, but when I try to use the server in development mode, I keep getting

ActionView::Template::Error (undefined method `upcase!' for :json:Symbol):

Rails 3.2.11
RablRails 0.3.0

Sometimes - not always:

Started GET "/api/collections" for 95.25.169.19 at 2012-10-22 13:50:53 +0000
Processing by Api::CollectionsController#index as HTML
Rendered api/collections/index.rabl (3.0ms)
Failure: undefined method collection' for #<Collection:0x00000004f57d38> Class: NoMethodError /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/activemodel-3.2.8/lib/active_model/attribute_methods.rb:407:inmethod_missing'
/var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.8/lib/active_record/attribute_methods.rb:149:in method_missing' /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:56:inblock in render_resource'
/var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:51:in each' /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:51:ininject'
/var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:51:in render_resource' /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:97:inblock in render_collection'
/var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:97:in map' /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:97:inrender_collection'
/var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/renderers/base.rb:30:in render' /var/www-data/mydreamboardapp.com/shared/bundle/ruby/1.9.1/gems/rabl-rails-0.2.2/lib/rabl-rails/library.rb:18:inget_rendered_template'
/media/data1/www-data/mydreamboardapp.com/releases/20121022130156/app/views/api/collections/index.rabl:2:in `_app_views_api_collections_index_rabl__728353672390700706_51375400'

Mos of the time ir works fine.

index.rabl:

collection :@collections

extends 'api/commons/collection'

Hi,
I've been using rabl-rails for sometime now and its great. But I'm not able to use a cache key generated by controller in the rabl template.

Here is the code

def some_action
   @cache_key = "#{params[:x]}-#{params[:y]}"
end

some_action.json.rabl

object :@brand, root: false
cache {|b| @cache_key}

Also I can't seem to be able to access the params hash in the rabl template. Is this intended ? How can I achieve this ?

Thanks in advance.

Hi,

After upgrading to 0.4.0, my dates are formated in json as "2014-12-10 17:04:01 UTC" instead of "2014-12-10T17:04:01.678Z" (iso8601) like it is on 0.3.4.

It seems an object of type JSON::Ext::Generator::State is being passed to to_json which makes the date be outputted in that format.

Any idea how to fix ?

Thanks

request.format isn't always set with rabl-rails. I had no problem with rabl.

The response header 'Content-Type' is sometimes invalid too. (return text/html instead of application/json during the first request in my app).

Any idea ?

When upgrading rabl-rails from 0.4.1 to 0.4.2 we noticed that in our staging environment the object root is no longer included but it was in 0.4.1. We use latest responders gem with rabl-rails and are on Rails 4.2.6. Here's a sample RABL file from our API that demonstrates the issue:

object :@user

extends 'api/v1/users/user'

node(:total_credits) do |user|
  user.get_credits[:total]
end

child(:credit_cards) do
  extends 'api/v1/credit_cards/credit_card'
end

child(:bank_account) do
  extends 'api/v1/bank_accounts/bank_account'
end

So instead of getting something like the following with 0.4.1:

{
  "user": {
    "id": 1,
    "name": "Javier Julio"
  }
}

We are now getting the following with 0.4.2 which is missing the root key

{
  "id": 1,
  "name": "Javier Julio"
}

We don't have any configuration for rabl-rails for staging or anywhere for that matter (no initializer, just using defaults) so I wonder if it has to do with how templates get compiled that is causing this bug?

hi guys,

i was just wondering if anyone else has stumbled upon this issue?

node(:data) do |user|
    {id: user.id, name: user.name}
end

returns

{":data":{":id":1,":name":"John Doe"}

any idea why something like this would occur? i am sure i am missing something stupid..
thanks!

When migrating from rabl to rabl-rails I encounter a problem. Let's say you have 2 views in which you can extends each other under 2 different conditions that cannot be true at the same time.

Postulate : condition_A = !condition_B

# x/show.rabl
object :@x
attributes :id

condition(->(_) { condition_A } do
  extends 'y/show'
end

# y/show.rabl
object :@y
attributes :id

condition(->(_) { condition_B } do
  extends 'x/show'
end

That case triggers a ActionView::Template::Error: stack level too deep error when rendered. I guess that because the views are compiled contrary to the rabl gems.