Fix date and datetime filters

[KhaledBousrih]

Description of the problem

Concrete range / comparaison filters use a method convert_type that takes an argument close_period (defaults to True):

For DateTime fields, if close_period is true, we consider the end of the day, otherwise we consider the start of the day.

Example:

convert_type("2022-02-24T15:50:00Z", "DateTimeField", close_period=True)  # 2022-02-24T00:00:00Z
convert_type("2022-02-24T15:50:00Z", "DateTimeField", close_period=False)  # 2022-02-24T23:59:59Z

If we have a model MyModel with field datetime, and two instances of this model:

• instance1: datetime = 2022-02-24T18:45:12.1653Z
• instance2: datetime = 2022-02-24T20:02:33.233Z

If we apply the API filter: ?datetime__range=2022-02-24T19:00:00Z,2022-02-24T22:00:00Z, we expect to get the instance 2 in the results of the request, but we have both results, because what is actually done is a datetime__range=2022-02-24T00:00:00Z,2022-02-24T23:59:59Z

Fix

⚠️ This issue should be handeled first #124

Supported formats for DateTime filters

• YYYY-MM-DD: (regex: r'^\d{4}-\d{2}-\d{2}$')
• YYYY-MM-DDTHH:mm:ssZ: (regex: r'^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$')
• YYYY-MM-DDTHH:mm:ss.xxxxxxZ: (regex: r'^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{1,6})?Z$')

Possible filters

Comparaison filters

lookup \ date format	YYYY-MM-DD	YYYY-MM-DDTHH:mm:ssZ	YYYY-MM-DDTHH:mm:ss.xxxxxxZ
__gte	dt.start_of('day')	dt.start_of('second')	dt
__gt	dt.end_of('day')	dt.end_of('second')	dt
__lte	dt.end_of('day')	dt.end_of('second')	dt
__lt	dt.start_of('day')	dt.start_of('second')	dt

Range filters

For the range filter: __range=datetime_min,datetime_max:

value \ date format	YYYY-MM-DD	YYYY-MM-DDTHH:mm:ssZ	YYYY-MM-DDTHH:mm:ss.xxxxxxZ
datetime_min	dt.start_of('day')	dt.start_of('second')	dt
datetime_max	dt.end_of('day')	dt.end_of('second')	dt