Changing variable values with URL's

Community Playground General Discussions
#1

Hi all,

I found out that with URL’s I can modify a variable called “MyData” by performing:’

http://:3480/data_request?id=variableset&Variable=MyData&Value=125
http://:3480/data_request?id=variableget&Variable=MyData

I see that it works, but how can I use this variable “MyData” in my Lua code?

If I use
luup.log(MyData)

…the log tells me that MyData is null.

Thanks for your help in advance,
Erik

#2

Youo’ll probably benefit form @RexbBeckett’s Conditional Scene Execution: Some Examples and the wiki, Getting started with LUUP.

#3

Thanks for providing the links.

If been googling/reading quite a lot to find out how to manipulate variables.
With URL’s I am able to start scenes and to modify properties/settings of devices.

But it also seems to be possible to omit the DeviceNum and serviceID. Vera documentation states the following about it:
(see [url=http://wiki.micasaverde.com/index.php/Luup_Requests#variableset]http://wiki.micasaverde.com/index.php/Luup_Requests#variableset[/url])

http://ip_address:3480/data_request?id=variableset&DeviceNum=6&serviceId=urn:micasaverde-com:serviceId:DoorLock1&Variable=Status&Value=1
If you leave off the DeviceNum and serviceID, then this sets a top-level json tag called “Variable” with the value.

But how can I access that “top-level json tag called “Variable”” in my LUA script?

Thanks,
Erik

#4

LUA Variables ARE NOT the same as JSON variables ARE NOT the same as device variables!

You can access state variabled in LUA with luup.variable_get … You can access SOME JSON variables with luup.attr_get

#5

Ok thanks, that clears it up for me.