MUSTACHE(5)							  Mustache Manual						       MUSTACHE(5)

NAME

       mustache -- Logic-less templates.

SYNOPSIS

       A typical Mustache template:

	   Hello {{name}}
	   You have just won {{value}} dollars!
	   {{#in_ca}}
	   Well, {{taxed_value}} dollars, after taxes.
	   {{/in_ca}}

       Given the following hash:

	   {
	     "name": "Chris",
	     "value": 10000,
	     "taxed_value": 10000 - (10000 * 0.4),
	     "in_ca": true
	   }

       Will produce the following:

	   Hello Chris
	   You have just won 10000 dollars!
	   Well, 6000.0 dollars, after taxes.

DESCRIPTION

       Mustache  can  be  used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a
       hash or object.

       We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced
       with a value, some nothing, and others a series of values. This document explains the different types of Mustache tags.

TAG TYPES

       Tags  are  indicated  by the double mustaches. {{person}} is a tag, as is {{#person}}. In both examples, we'd refer to person as the key or
       tag key. Let's talk about the different types of tags.

   Variables
       The most basic tag type is the variable. A {{name}} tag in a basic template will try to find the name key in the current context. If  there
       is no name key, nothing will be rendered.

       All variables are HTML escaped by default. If you want to return unescaped HTML, use the triple mustache: {{{name}}}.

       You can also use & to unescape a variable: {{& name}}. This may be useful when changing delimiters (see "Set Delimiter" below).

       By default a variable "miss" returns an empty string. This can usually be configured in your Mustache library. The Ruby version of Mustache
       supports raising an exception in this situation, for instance.

       Template:

	   * {{name}}
	   * {{age}}
	   * {{company}}
	   * {{{company}}}

       Hash:

	   {
	     "name": "Chris",
	     "company": "<b>GitHub</b>"
	   }

       Output:

	   * Chris
	   *
	   * &lt;b&gt;GitHub&lt;/b&gt;
	   * <b>GitHub</b>

   Sections
       Sections render blocks of text one or more times, depending on the value of the key in the current context.

       A section begins with a pound and ends with a slash. That is, {{#person}} begins a "person" section while {{/person}} ends it.

       The behavior of the section is determined by the value of the key.

       False Values or Empty Lists

       If the person key exists and has a value of false or an empty list, the HTML between the pound and slash will not be displayed.

       Template:

	   Shown.
	   {{#nothin}}
	     Never shown!
	   {{/nothin}}

       Hash:

	   {
	     "person": true,
	   }

       Output:

	   Shown.

       Non-Empty Lists

       If the person key exists and has a non-false value, the HTML between the pound and slash will be rendered and displayed one or more times.

       When the value is a non-empty list, the text in the block will be displayed once for each item in the list. The context of the  block  will
       be set to the current item for each iteration. In this way we can loop over collections.

       Template:

	   {{#repo}}
	     <b>{{name}}</b>
	   {{/repo}}

       Hash:

	   {
	     "repo": [
	       { "name": "resque" },
	       { "name": "hub" },
	       { "name": "rip" },
	     ]
	   }

       Output:

	   <b>resque</b>
	   <b>hub</b>
	   <b>rip</b>

       Lambdas

       When the value is a callable object, such as a function or lambda, the object will be invoked and passed the block of text. The text passed
       is the literal block, unrendered. {{tags}} will not have been expanded - the lambda should do that on its own. In this way you  can  imple-
       ment filters or caching.

       Template:

	   {{#wrapped}}
	     {{name}} is awesome.
	   {{/wrapped}}

       Hash:

	   {
	     "name": "Willy",
	     "wrapped": function() {
	       return function(text) {
		 return "<b>" + render(text) + "</b>"
	       }
	     }
	   }

       Output:

	   <b>Willy is awesome.</b>

       Non-False Values

       When the value is non-false but not a list, it will be used as the context for a single rendering of the block.

       Template:

	   {{#person?}}
	     Hi {{name}}!
	   {{/person?}}

       Hash:

	   {
	     "person?": { "name": "Jon" }
	   }

       Output:

	   Hi Jon!

   Inverted Sections
       An  inverted  section begins with a caret (hat) and ends with a slash. That is {{^person}} begins a "person" inverted section while {{/per-
       son}} ends it.

       While sections can be used to render text one or more times based on the value of the key, inverted sections may render text once based	on
       the inverse value of the key. That is, they will be rendered if the key doesn't exist, is false, or is an empty list.

       Template:

	   {{#repo}}
	     <b>{{name}}</b>
	   {{/repo}}
	   {{^repo}}
	     No repos :(
	   {{/repo}}

       Hash:

	   {
	     "repo": []
	   }

       Output:

	   No repos :(

   Comments
       Comments begin with a bang and are ignored. The following template:

	   <h1>Today{{! ignore me }}.</h1>

       Will render as follows:

	   <h1>Today.</h1>

       Comments may contain newlines.

   Partials
       Partials begin with a greater than sign, like {{> box}}.

       Partials are rendered at runtime (as opposed to compile time), so recursive partials are possible. Just avoid infinite loops.

       They also inherit the calling context. Whereas in ERB you may have this:

	   <%= partial :next_more, :start => start, :size => size %>

       Mustache requires only this:

	   {{> next_more}}

       Why? Because the next_more.mustache file will inherit the size and start methods from the calling context.

       In this way you may want to think of partials as includes, or template expansion, even though it's not literally true.

       For example, this template and partial:

	   base.mustache:
	   <h2>Names</h2>
	   {{#names}}
	     {{> user}}
	   {{/names}}

	   user.mustache:
	   <strong>{{name}}</strong>

       Can be thought of as a single, expanded template:

	   <h2>Names</h2>
	   {{#names}}
	     <strong>{{name}}</strong>
	   {{/names}}

   Set Delimiter
       Set Delimiter tags start with an equal sign and change the tag delimiters from {{ and }} to custom strings.

       Consider the following contrived example:

	   * {{default_tags}}
	   {{=<% %>=}}
	   * <% erb_style_tags %>
	   <%={{ }}=%>
	   * {{ default_tags_again }}

       Here  we have a list with three items. The first item uses the default tag style, the second uses erb style as defined by the Set Delimiter
       tag, and the third returns to the default style after yet another Set Delimiter declaration.

       According to ctemplates, this "is useful for languages like TeX, where double-braces may occur in the text  and	are  awkward  to  use  for
       markup."

       Custom delimiters may not contain whitespace or the equals sign.

COPYRIGHT

       Mustache is Copyright (C) 2009 Chris Wanstrath

       Original CTemplate by Google

SEE ALSO

       mustache(1), mustache(7), http://mustache.github.com/

DEFUNKT 
							     May 2010							       MUSTACHE(5)