gluon/docs/dev/web/config-mode.rst
2017-02-22 01:32:19 +01:00

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Config Mode
===========
The `Config Mode` consists of several modules that provide a range of different
condiguration options:
gluon-config-mode-core
This modules provides the core functionality for the config mode.
All modules must depend on it.
gluon-config-mode-hostname
Provides a hostname field.
gluon-config-mode-autoupdater
Informs whether the autoupdater is enabled.
gluon-config-mode-mesh-vpn
Allows toggling of mesh-vpn-fastd and setting a bandwidth limit.
gluon-config-mode-geo-location
Enables the user to set the geographical location of the node.
gluon-config-mode-contact-info
Adds a field where the user can provide contact information.
Writing Config Mode modules
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Config mode modules are located at ``/lib/gluon/config-mode/wizard`` and
``/lib/gluon/config-mode/reboot``. Modules are named like ``0000-name.lua`` and
are executed in lexical order. In the standard package set, the
order is, for wizard modules:
- 0050-autoupdater-info
- 0100-hostname
- 0300-mesh-vpn
- 0400-geo-location
- 0500-contact-info
The reboot module order is:
- 0100-mesh-vpn
- 0900-msg-reboot
All modules are run in the gluon-web model context and have access to the same
variables as "full" gluon-web modules.
Wizards
-------
Wizard modules must return a function that is provided with the wizard form and an
UCI cursor. The function can create configuration sections in the form:
.. code-block:: lua
return function(form, uci)
local s = form:section(Section)
local o = s:option(Value, "hostname", "Hostname")
o.default = uci:get_first("system", "system", "hostname")
o.datatype = "hostname"
function o:write(data)
uci:set("system", uci:get_first("system", "system"), "hostname", data)
end
return {'system'}
end
The function may return a table of UCI packages to commit after the individual
fields' `write` methods have been executed. This is done to avoid committing the
packages repeatedly when multiple wizard modules modify the same package.
Reboot page
-----------
Reboot modules are simply executed when the reboot page is
rendered:
.. code-block:: lua
renderer.render_string("Hello World!")