Generating HTML in Rails Model

Question

I'm working on a project with Events which are published to EventBrite. An Event has a number of fields (Bio, Image, etc...) which will published to EventBrite as a HTML blob. It feels dirty to generate HTML straight from the model and I think that I'd rather see something like how mailers are done, but it feels like I'm reinventing the wheel.

Any recommendations?

erb/haml provide templating but don't solve the issue that the Event model is being wired to a view. — BobBrez
– BobBrez, Commented Aug 27, 2012 at 12:41

apneadiving · Accepted Answer · 2012-08-27 13:08:38Z

3

You should use the decorator pattern.

An example is described in this Railscast.

# @param view_name [String]
# @param locals [Hash] containing the variables you want to pass to the view (I guess only the decorator itself)
def render(view_name, locals = {})
  filename = File.join "app", "views", "decorators", "#{view_name}.html.erb"
  template = File.read filename
  eruby = Erubis::Eruby.new(template)
  eruby.result locals
end

edited Aug 27, 2012 at 13:08

answered Aug 27, 2012 at 12:16

apneadiving

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6 Comments

sethvargo Over a year ago

+1 definitely agree. You've come across one of the flaws on MVC

apneadiving Over a year ago

@sethvargo: fully agreed to your comment

BobBrez Over a year ago

With Draper, its wouldn't it still be a case of the Model generating the view?

apneadiving Over a year ago

Not directly, but you could create your own method which will get an erb file in a dedicated folder and pass the variables to it. Would you like an example?

BobBrez Over a year ago

Thanks @apneadiving. erb examples are fairly abundant so I'm all set. I guess what I am trying to really figure out is whether its worth it to create something like a EventBriteDispatcher with a method that would take an Event and call to EventBrite.

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