Undefined method asset_path

[Blaze34]

I use Slim and I got error undefined method asset_path.
It happen because in angular-rails4-templates/slim_processor.rb called method render without arguments.

First argument should be some ActionView object which will be use as scope for template.

[superchris]

@jeremyk any thoughts on this one?

[jeremyk]

Took a look at this. I was able to reproduce this but had not seen it previously as I do not use any url helpers in my client side templates. I tried fixing by passing ActionController::Base.helpers as an argument (it was the only thing I could find with a asset_path method on it) but get a stack size error. I am happy to take another look if anyone has suggestions but need to get back to other things at the moment.

[Blaze34]

Methods which using in template placed in ActionView::Helpers
I tried many different options. Some of them:

1. Some class include ActionView::Helpers

module AngularRails4Templates
  class Test
    include ActionView::Helpers
  end
end

then

output = Slim::Template.new { template }.render AngularRails4Templates::Test.new

In this case asset_path works incorrect.
scope.asset_path('test.jpg') return /test.jpg but have to /assets/test.jpg

1. Create an instance of ActionView::Base

output = Slim::Template.new { template }.render ActionView::Base.new

In this case I got SystemStackError. But this also work incorrect

av = ActionView::Base.new
av.asset_path('test.jpg') # /test.jpg

I suggest that there is no rails configurations in both cases.

[jeremyk]

Any chance it maybe needs to have the path set with one of the values in
the input hash?
On Tue, Jan 19, 2016 at 11:26 PM Viktor notifications@github.com wrote:

Methods what can by used in template placed in ActionView::Helpers
I tried many different options. Some of them:

1. Some class include ActionView::Helpers

module AngularRails4Templates
class Test
include ActionView::Helpers
end
end

then

output = Slim::Template.new { template }.render AngularRails4Templates::Test.new

In this case asset_path works incorrect.
scope.asset_path('test.jpg') return /test.jpg but have to /assets/test.jpg

1. Create an instance of ActionView::Base

output = Slim::Template.new { template }.render ActionView::Base.new

In this case I got SystemStackError. But this also work incorrect

av = ActionView::Base.new
av.asset_path('test.jpg') # /test.jpg

I suggest that there is no rails configurations in both cases.

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[Blaze34]

I tried, unfortunately without success.
There are just two objects which can contain helpful informations: sprockets environment and sprockets cache (as I remember)

[Blaze34]

@jeremyk any news?

[bmulholland]

I'm getting what seems like a variant of this:

undefined method `image_tag' for #<Object:0x00000007d4bac8>

[Blaze34]

Yes. It's the same

[jeremyk]

Was taking another look at this and I am super confused. Just trying different things:

class AssetHelper
  include ActionView::Helpers::AssetUrlHelper
end

def render_html(input)
  ah = AssetHelper.new
  ap = ah.asset_path('add.svg')

  Rails.logger.debug "HERE: #{ap}"
  byebug

  template = input[:data]
  output = '' #Slim::Template.new { template }.render ah
  escape_javascript output
end

(byebug) aa  = ActionView::Base.new
(byebug) aa.asset_path('add.svg')
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
HERE: /add.svg
"/assets/add.svg"
(byebug)

So it eventually outputs the correct value by using ActionView::Base.new but no idea why it hits this so many times as a it is running asset_path on the new ActionView base. I think it is probably equal to the number of .slim files I have in the project.

Anyway, not really getting anywhere but here are some more thougths: 1) Is there any way to initialize a new ActionView::Base and pass it in so that the same one is used every time? 2) input has a sprockets cache on it via input[:cache]. No luck with that but maybe someone more knowledgeable would know how to use it? 3) Why isn't this happening with HAML? I don't see any use of any of these helpers for the HAML processor?

Sorry I am not more help but I'm really not much of a ruby/rails developer, just dabble in it a little.

[jeremyk]

More random stuff I tried (in case it gives anyone ideas):

        sp = Sprockets::Environment.new(Rails.root)
        sp.append_path(input[:load_path])
        sp.instance_variable_set(:@cache, input[:cache])
        ah = ActionView::Base.new(ActionController::Base.view_paths)
        ah.assets_environment = sp