Getting Sunrise/Sunset Times with Lua

[caseyp]

Ron,
I've been digging through the forum and I've yet to find anything that can point me in the right direction. I'm wanting to get the Sunrise and Sunset times so that I can setup a scene to turn on a light only if it's past sunset and before sunrise (or apply a time offset). I do have automatic lighting that uses the scheduler to do this however this would be something triggered by a remote or amazon echo. My goal is to say "Alexa, Living Room ON" and have the TV come on and the light only if it's needed but I can't seem to figure out how to get these times from Girder using Lua.

Thanks,
Casey

[Ron]

See the manual scripting/Scheduler/sunrise and scripting/scheduler/sunset

[caseyp]

Thanks Ron, I somehow missed that. I'll see if I can get it working.

Casey

[Ron]

no problem! let me know if you get stuck.

[caseyp]

Unfortunately Ron I have gotten a little stuck. I have been able to get both sunrise and sunset using the code shown in the manual and date.now() however I'm having trouble adding a day to the date. From reading the manual I thought the following would work since it says the addDays method takes a number but I get an error.

local tomorrowsDate = date.now()
tomorrowsDate = tomorrowsDate.addDays(1)
print(tomorrowsDate)

Error:
10: bad argument #1 to 'addDays' (girder.date expected, got number)

I've never been a fan of working with Dates in any language as they all seem to do it a little differently and it can be fairly confusing.

[Ron]

tomorrowsDate = tomorrowsDate:addDays(1)

tomrrowsDate is an object, you need to use the ":" symbol.

[caseyp]

Well I've tried that Ron and all I get is nil. I tried both of these and both result in nil.

local tomorrowsDate = date.now()
tomorrowsDate = tomorrowsDate:addDays(1)

and

tomorrowsDate = date.now():addDays(1)

Obviously I must be doing something wrong but when it comes to Lua I feel like a blind guy trying to drive a car.

[Ron]

See the manual, addDays returns nil, it operates on the object it self.


local now = date.now()
print(now)
now:addDays(1)
print(now)

[caseyp]

Here's what I'm getting Ron.

----------------------------------------

print(date.now())

returns: Sun Apr 24 19:49:17 2016



----------------------------------------


local tomorrowsDate = date.now()
tomorrowsDate:addDays(1)
print(tomorrowsDate)

returns: Sun Apr 24 19:49:17 2016

---------------------------------------

So at this point I'm at a loss Ron. I love Girder, but I sure hate Lua because for some reason I just don't get it.

[Ron]

This is not a good evening for that module. That is a bug on my part.... Fixing....

[Ron]

Fixed in release 6.0.17.5 sorry about that!