NoMethodError: undefined method `output_buffer=' for

[tscolari]

Hello, I'm getting this error message when trying to compile my .js.hamlbars file:

throw Error("NoMethodError: undefined method `output_buffer=' for #<#<Class:0x007fd1c69bc428>:0x007fd1c7e41bc8>\n  (in ........./app/assets/javascripts/ember/templates/sessions/login_box.js.hamlbars)")

My template looks like this:

.loginbox#loginbox
  = form_for(User.new, :url => user_session_path()) do |f|
    = f.label :email, :class => 'fm-lbl'
    = f.text_field :email, :class => 'fm-txt'
    = f.label :password, :class => 'fm-lbl'
    = f.password_field :password, :class => 'fm-txt'
    .remember
      = f.check_box :remember_me
      = f.label :remember_me, 'Lembrar meu login'
    = f.submit 'Entrar', :class => 'fm-sub bt-default'

I had the helpers enabled with

Hamlbars::Template.enable_rails_helpers!

because I need some assets handling helpers

[jimsynz]

I'm guessing that this wont work because one of the helpers you're using is trying to access the request object. Can you post the full backtrace?

[inkstak]

I got the same.. The problem is around the form_for helper.

My template :

= form_for Foo.new do |f|
  = 'hello world'

And the top lines of the full backtrace :

actionpack (3.2.2) lib/action_view/helpers/capture_helper.rb:190:in `ensure in with_output_buffer'
actionpack (3.2.2) lib/action_view/helpers/capture_helper.rb:190:in `with_output_buffer'
haml (3.1.4) lib/haml/helpers/xss_mods.rb:109:in `with_output_buffer_with_haml_xss'
actionpack (3.2.2) lib/action_view/helpers/capture_helper.rb:40:in `capture'
haml (3.1.4) lib/haml/helpers/action_view_mods.rb:105:in `capture_with_haml'
actionpack (3.2.2) lib/action_view/helpers/form_helper.rb:606:in `fields_for'
actionpack (3.2.2) lib/action_view/helpers/form_helper.rb:377:in `form_for'
haml (3.1.4) lib/haml/helpers/action_view_mods.rb:183:in `form_for_with_haml'
haml (3.1.4) lib/haml/helpers/xss_mods.rb:132:in `form_for_with_haml_xss'
app/assets/javascripts/templates/foo/_form.js.hbs:3:in `evaluate_source'
tilt (1.3.3) lib/tilt/template.rb:209:in `instance_eval'
tilt (1.3.3) lib/tilt/template.rb:209:in `evaluate_source'
tilt (1.3.3) lib/tilt/template.rb:144:in `cached_evaluate'
tilt (1.3.3) lib/tilt/template.rb:127:in `evaluate'
hamlbars (2012.3.21) lib/hamlbars/ext/rails_helper.rb:18:in `evaluate'
hamlbars (2012.3.21) lib/hamlbars/template.rb:78:in `evaluate'

Let's investigate...

[inkstak]

It seems the problem is already known : sstephenson/sprockets#218

[jimsynz]

So sounds like it's just something that's unsupported due to the way the helpers are implemented. @blakink, should we just close this issue?

[tscolari]

If you could take a look at https://github.com/infbio/haml_assets, they don't support handlebars, but haml on assets pipeline.
They figured out a way to render these kind of helpers on version >= 0.1.0.
I'm not sure, but I think it's this commit: https://github.com/infbio/haml_assets/commit/5c1fc8f4d401453f437df37ba3826a9e03b63cd1

[jimsynz]

Closing because compilation has been removed from the v2.0 branch.