How to pass an argument when calling a view file?

Question

I wrote a webform using Sinatra and Haml that will be used to call a Ruby script.

Everything seems fine except for one thing: I need to pass an argument to a Haml view f

Answer 1

Given

haml(template, options = {}, locals = {})

I'd try

haml :success, {}, {my_var: my_value}

Answer 2

I'm doing this in Sinatra+Markaby, I think it should be the same with Haml:

In Ruby script: @var = 'foo'

In template: User name: #{@var}

Answer 3

You can pass a hash of parameters to the Haml method using the :locals key:

get '/' do
    haml :index, :locals => {:some_object => some_object}
end

This way the Ruby code in your Haml file can access some_object and render whatever content is in there, call methods etc.

Answer 4

Haml supports passing variables as locals. With Sinatra, you can send these locals like so:

haml :fail, :locals => {:vm_name => name}

and in the view, reference the variable using locals[:vm_name] or simply vm_name.