Render template inside a Rails runner script

with_runner.rb

view_assigns = {widgets: Widget.all}
av = ActionView::Base.new(ActionController::Base.view_paths, view_assigns)
av.class_eval do
  # include any needed helpers (for the view)
  include ApplicationHelper
end

# normal render statement
content = av.render template: 'widgets/index.xlsx.axlsx'
# do something with content, such as:
File.open("/tmp/with_runner.xlsx","w+b") {|f| f.puts content }

@straydogstudio, this script doesn't work in a container in Docker, and I can't figure out why. Would you have any tips?

Can you post a gist of your Docker command etc?

@straydogstudio, the script is in a Job that I use with sidekiq and redis:
https://gist.github.com/wilfrank84/b6b0912d9be397e4334a3b3e02db871b

Testing outside the docker works perfectly, I suppose some dependency may be missing from the environment, but I have no idea what it could be.

Following is dockerfile:
https://gist.github.com/wilfrank84/6c7bc33ad9c352ccd1557715b1a15f9b

@straydogstudio, any word on this?

@wilfrank84, did you get it working? I'll likely have a very similar setup soon and it would be great to have an example to work with if there is one.

@wilfrank84 @bjgaynor I apologize I have not gotten to this. I will get to it this weekend.

@willfrank84 Did you have any specific errors? Your stuff is too specific for me to run it on some rails project. I notice, however, that you are using the rails runner version of the script. When you run it outside of Docker, is it by command or within sidekiq? In docker are you using Sidekiq? It's been a long while since I worked with Sidekiq. The jobs I remember had to have extra work to have what they needed. But I am not sure.

@willfrank Would you post your Gemfile?

This didn't work for me.

I had to do this:

content = ApplicationController.render(
  template: "exports/demo/index",
  locals: {posts: Post.all.limit(3)},
  handlers: [:axlsx],
  formats: [:xlsx]
)

If you’re writing a view spec or similar, and your template contains instance variables, you can add/change locals to assigns in the above snippet from @delbetu

# if your .xlsx.aslsx file needs access to a `@posts`
# instance variable rather than local variable, use this:

content = ApplicationController.render(
  template: "exports/demo/index",
  assigns: { posts: Post.all.limit(3) },
  handlers: [:axlsx],
  formats: [:xlsx]
)