Ruby on Rails - haml an alternative way to use in our views in ruby on rails - ruby on rails tutorial - rails guides - rails tutorial - ruby rails

HAML (HTML abstraction markup language) is a beautiful and elegant way to describe and design the HTML of our views.
Instead of opening- and closing tags, HAML uses indentation for the structure of your pages.
Basically, if something should be placed within another element, we just indent it by using one tab stop.
Tabs and white space are important in HAML, so be sure that you always use the same amount of tabs.

Examples

#myview.html.erb
<h1><%= @the_title %></h1>
<p>This is my form</p>
<%= render "form" %>

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in HAML:

#myview.html.haml
%h1= @the_title
%p
    This is my form
= render 'form'

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We see, the structure of the layout is much clearer than using HTML and ERB.

Installation

Just install the gem using

gem install haml

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Adding the gem to the Gemfile

gem "haml"

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Using HAML instead of HTML/ERB, just replace the file extensions of your views from something.html.erb to something.html.haml.

Quick tipps

HTML

<div class="myclass">My Text</div>

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HAML

%div.myclass

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HAML, shorthand

.myclass

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Attributes

HTML

<p class="myclass" id="myid">My paragraph</p>

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HAML

%p{:class => "myclass", :id => "myid"} My paragraph

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Inserting ruby code

We can insert ruby code with the = and - signs.

= link_to "Home", home_path

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Code starting with = will be executed and embedded into the document.
Code starting with - will be executed, but not inserted into the document.

Full documentation

HAML is very easy to start with, but is also very complex, so that I'll recommend reading the documentation

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Ruby on Rails - haml an alternative way to use in our views in ruby on rails - ruby on rails tutorial - rails guides - rails tutorial - ruby rails

Examples

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Installation

Just install the gem using

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Quick tipps

HTML

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

HAML

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

HAML, shorthand

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Attributes

HTML

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

HAML

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Inserting ruby code

Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team

Full documentation

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