Rails, How to render a view/partial in a model

Question

In my model I have:

after_create :push_create

I push_create I need to render a view. I\'m trying to do that like so:

  def         


        

Answer 1

I have created a gist for this.
I needed something similar, where the models don't necessarily (or in my case, ever) get updated via a controller, so the logic can't sit there.

Created a server-push based controller:
https://gist.github.com/4707055

Answer 2

Rails 5 way

In Rails 5 rendering outside a controller became pretty straightforward due to implemented render controller class method:

# render template
ApplicationController.render 'templates/name'
# render action
FooController.render :index
# render file
ApplicationController.render file: 'path'
# render inline
ApplicationController.render inline: 'erb content'

When calling render outside of a controller, one can assign instance variables via assigns option and use any other options available from within a controller:

ApplicationController.render(
  assigns: { article: Article.take },
  template: 'articles/show',
  layout: false
)

Request environment can be tailored either through default options

ApplicationController.render inline: '<%= users_url %>'
# => 'http://default_host.com/users'

ApplicationController.renderer.defaults[:http_host] = 'custom_host.org'
# => "custom_host.org"

ApplicationController.render inline: '<%= users_url %>'
# => 'http://custom_host.org/users'

or explicitly by initializing a new renderer

renderer = ApplicationController.renderer.new(
  http_host: 'custom_host.org',
  https: true
)
renderer.render inline: '<%= users_url %>'
# => 'https://custom_host.org/users'

Hope that helps.

Answer 3

You should call all render methods from a controller. So, in this case, you can notify the controller that the object has been created and the controller can then render the view. Also, since you can render only once, I think you can wait for all your server side operations to complete before invoking the render.

Answer 4

You can use ActionView directly and render partials to string without having a controller. I find that pattern useful to create models that encapsulate some javascript generation, for instance.

html = ActionView::Base.new(Rails.configuration.paths['app/views']).render(
  partial: 'test', 
  formats: [:html],
  handlers: [:erb],
  locals: { variable: 'value' }
)

Then, just put your _test.html.erb in you view folder and try it out!