将 haml-partial 传递给控制器​​变量

Question

I have a function sending messages to a user on a site.

Function arguments: user_id, from_user_id, subject, content. I need to pass a haml template to the content variable that supports the link_to helper.

Can I do something like content: partial 'my_partial' ?

This can be done?

Because I'm really not comfortable writing long lines in the controller:

Msg.create(user_id: 2420, 
           from_user_id: 2421, 
           subject: 'Finish now!', 
           content: "<p style='text-align: center;'>User A can help!.<br><br><br><br><a class='match-btn-green-radius' href='#'>Finish</a></p>")

It looks like this:

Answer 1

Msg.create(user_id: 2420, 
           from_user_id: 2421, 
           subject: 'Finish now!', 
           content: render_to_string(partial: 'foo/bar', locals: { foo: 'bar' }))

This will render the partial at app/foo/_bar.html.haml with a local variable foo set to the value "bar" .

Answer 2

Another approach is to use haml directly. (Be very careful about indentation)

engine = Haml::Engine.new("
%p Haml code!
h1 Title
")

Msg.create(...., content: engine.render)

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Obviously this is just for very simple html, and I'm perfectly well aware of the fact that mixing html in controllers violates all sorts of rules.