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openwrt-luci/docs/Templates.md
Sergey Ponomarev 155d2bdd6e docs: Synchronize with Wiki 
The Wiki on GitHub has newer version of documentation.
Still we may have references to the docs folder.
Update all pages but also add a notice:

See [online wiki](https://github.com/openwrt/luci/wiki/) for latest version.

The LAR page is removed because there no any mentions of it anywhere in Luci.

This closes #2360

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
2023-08-10 13:10:37 +03:00

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Templates

See online wiki for latest version.

LuCI has a simple regex based template processor which parses HTML-files to Lua functions and allows to store precompiled template files. The simplest form of a template is just an ordinary HTML-file. It will be printed out to the user as is.

In LuCI every template is an object with an own scope It can therefore be instanced and each instance can have a different scope. As every template processor. LuCI supports several special markups. Those are enclosed in <% %>-Tags.

By adding - (dash) right after the opening <% every whitespace before the markup will be stripped. Adding a - right before the closing %> will equivalently strip every whitespace behind the markup.

Builtin functions and markups

Including Lua code

Markup:

<% code %>

Writing variables and function values

Syntax:

<% write (value) %>

Short-Markup:

<%=value%>

Including templates

Syntax:

<% include (templatename) %>

Short-Markup:

<%+templatename%>

Translating

Syntax:

<%= translate("Text to translate") %>

Short-Markup:

<%:Text to translate%>

Commenting

Markup:

<%# comment %>

Builtin constants

  • REQUEST_URI: The current URL (without server part)
  • controller: Path to the Luci main dispatcher
  • resource: Path to the resource directory
  • media: Path to the active theme directory