Domoticz Community Forum - Support & Discussion

Posted: **Sunday 04 April 2021 15:11**

I have an issue with the recent added Domoticz.Configuration API in the Python Framework

from the doc: https://www.domoticz.com/wiki/Developin ... hon_plugin, the correct value type are dictionary. However it looks like the API doesn't survive to a Dictionary with a key equal to None !

Here is a piece of code to duplicate:

Code: Select all

config_item = { '_count': self.count , 'None_Value': None}
Domoticz.Log("config_item: %s" %str(config_item))
Domoticz.Log("Json config_item: %s" %json.dumps(config_item ))
setConfigItem( Value=config_item)

Posted: **Tuesday 06 April 2021 9:39**

For those whom might get to that issue ( having a dict with None value ), I have made a workaround by converting the None to Null when saving and from Null to None when retrieving.

I think the best would be to have Domoticz.Configuration() capable to store JSON datatype instead of dict, this will make the code in Domoticz simpler and rely on JSON Encoder/decoder

Code: Select all

def prepare_dict_for_storage( dict_items):
    Domoticz.Log("prepare_dict_for_storage")
    dict_str = json.dumps( dict_items )
    return json.loads( dict_str, object_pairs_hook=dict_None_to_Null )
    
def repair_dict_after_load( dict_items):
    dict_str = json.dumps( dict_items )
    return  json.loads( dict_str, object_pairs_hook=dict_Null_to_None)

def dict_None_to_Null( items ):
    result = {}
    for key, value in items:
        if value is None:
            Domoticz.Log("Updating %s: %s to %s:'Null'" %(key,value, key))
            value = "Null"
        result[key] = value
    return result

def dict_Null_to_None( items ):
    result = {}
    for key, value in items:
        if value == "Null":
            value = None
        result[key] = value
    return result

Posted: **Thursday 29 April 2021 18:34**

for information, I found an other limitation, which is that the new API doesn't work nicely with the full Dict type. for instance if you have any value inside your dictionary set to None, then it will be rejected !!!

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