Wednesday, 17 October 2012

HAML indentation problem

Here's a sample code to assign a dynamic div for displaying companies, the ids should be assigned based on whether the user is logged in or not:

- @companies.each do |company|
  - if user_logged_in?
    #sponsor_for_logged_users
      .icon
        = link_to company do
          = image_tag company.file
        %span{:class => 'classic'}
          %p.name= company.name
          %p= company.short_description
    .benefits= company.benefits
  - else
    #sponsor_for_unlogged_users
      .icon
        = link_to company do
          = image_tag company.file
        %span{:class => 'classic'}
          %p.name= company.name
          %p= company.short_description
    .benefits= company.benefits

Too much repeatation :(

We can't write:

- @companies.each do |company|
  - if user_logged_in?
    #sponsor_for_logged_users
  - else
    #sponsor_for_unlogged_users
      .icon
        = link_to company do
          = image_tag company.file
        %span{:class => 'classic'}
          %p.name= company.name
          %p= company.short_description
    .benefits= company.benefits

Because HAML will take the yellow part as part of else.
So what to do ???

Inside controller's action let's decide which div to select

def index
@div_class_sponsors = current_user.nil? ? "sponsors_benefits_unlogged" : "sponsors_benefits_logged"
end

The view page above now becomes:

- @companies.each do |company|
  %div{:id => @div_class_sponsors}
    .icon
      = link_to company do
        = image_tag company.file
      %span{:class => 'classic'}
        %p.name= company.name
        %p= company.short_description
    .benefits= company.benefits

Very simple. Just an idea that came to my mind instead of using the ideas available on other resources.
. and # are used to represent div class and id resp.

But we can always use %div.

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