What does Map() in lua code do?

mominux · February 28, 2022, 9:56am

hi . i am new in Lua and reading Leds file of openwrt . but i don`t know what below statement means :

m = Map("system", translate("<abbr title=\"Light Emitting Diode\">LED</abbr> Configuration"), translate("Customizes the behaviour of the device <abbr title=\"Light Emitting Diode\">LED</abbr>s if possible."))

jow · February 28, 2022, 6:00pm

It's a constructor function returning an abstract form object tied to the named uci configuration file given in the first argument. There's no thorough documentation of the cbi module (the one providing Map()) but there's some basic information here:

github.com

openwrt/luci/blob/master/docs/CBI.md


# CBI models
are Lua files describing the structure of an UCI config file and the resulting HTML form to be evaluated by the CBI parser.<br />
All CBI model files must return an object of type **luci.cbi.Map**.<br />
For a commented example of a CBI model, see the [Writing Modules tutorial](ModulesHowTo.md#cbimodels).

The scope of a CBI model file is automatically extended by the contents of the module **luci.cbi** and the _translate_ function from **luci.i18n**

This Reference covers **the basics** of the CBI system.


## class Map (_config, title, description_)
This is the root object of the model.

* **config:** configuration filename to be mapped, see [UCI documentation](https://openwrt.org/docs/guide-user/base-system/uci) and the files in /etc/config
* **title:** title shown in the UI
* **description:** description shown in the UI

#### function :section (_sectionclass_, ...)
Creates a new section

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