CODEWITHSUNDEEP
ruby-on-railsrubyhaml
applecrusher
applecrusher

Reputation: 5648

Do not understand what "#" key means with Haml in Rails

I am new to Ruby on Rails, and I setup a starter package on my local machine.

As I looked through it I found this in one of the html.haml files:

%p
  Welcome #{@email}!
%p You can confirm your account email through the link below:
%p= link_to 'Confirm my account', confirmation_url(@resource, :confirmation_token => @token)

I think that the ! is part of the message to the user and I believe the @email is a variable with string text and is the person's email address.

However, I don't quite understand what the # does with the email. From the Haml documentation I believe that the # symbol makes a div as show from the example on the Haml site, but this doesn't really make sense so if anyone could explain what it means I would greatly appreciate it.

Haml site example:

#content
  .left.column
    %h2 Welcome to our site!
    %p= print_information
  .right.column
    = render :partial => "sidebar"

Upvotes: 0

Views: 121

Answers (1)

matt
matt

Reputation: 79743

# is for setting the id of an element if it is part of an element, possibly an implicit div.

In plain text (i.e. not in an element definition) the #{...} syntax does interpolation. The contents are evaluated as Ruby, and the result is inserted into the output at this point. In this case, if @email had the value [email protected] the result would be:

Welcome [email protected]!

If you want to start a line with some interpolation you can escape the # with \, otherwise it would be interpreted as the start of an element and you would likely get an error.

Upvotes: 5

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