The simplest Lua template engine
Lua
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LICENSE.txt final changes Nov 16, 2014
README.md Enabled HTML escaping by default Mar 28, 2016
template-0.2-3.rockspec Better nil handling Apr 12, 2016
template.lua Better nil handling Apr 12, 2016
templatec minify Nov 16, 2014

README.md

lua-template

The simplest Lua HTML template engine in just a few lines of code

Installation

luarocks install template

Compiling templates

Templates can be compiled by either running

templatec template.tpl -o template.lua

nor by passing a string to template.compile.

Syntax

In short, Lua expressions must be included between percent signs and Lua statements must be placed beetween question marks.

Variables and expressions

<a href="page-<%page + 2%>"><%next%></a>

Variables and expressions without HTML escaping

<body><%=content%></body>

Loops

<ul>
<? for i = 1, 3 do ?>
  <li>item #<%i%></li>
<? end ?> 
</ul>

Conditional

<? if 1 > 2 then ?>
Impossible!
<? else ?>
That's right!
<? end ?>

Template inclusion

Templates are compiled to a general Lua file and hence can be loaded by require statement:

<html>
  <script><% require "scripts" %></script>
  <style><% require "styles" %></style>
</html>

Evaluating templates

template.print takes three arguments: template function, a table with variables passed to the template and optionally a callback function, which handles string printing (print is used by default).

Compressing templates

template.compile has an optional minify argument and templatec has -m option.