lino.mixins.periods¶

Defines classes related to date ranges.

Functions

`is_future`(self)
`rangefmt`(r)
`rangetext`(self[, fmt, empty_text])	Return a textual representation of the given date range.

Classes

`CombinedDateTime`(args, *kwargs)	Mixin for models which have at least one couple of date and time fields which form a kind of editable timestamp field.
`DateRange`(args, *kwargs)	Mixin for models that represent a period defined by a start date and an end date.
`DateRangeObservable`(args, *kwargs)
`Ended`(args, *kwargs)	Mixin for models with two fields `end_date` and `end_time`.
`Monthly`([verbose_name_start, verbose_name_end])	An `ObservedDateRange` which defaults to the current month.
`ObservedDateRange`([verbose_name_start, ...])	`lino.core.param_panel.ParameterPanel` with two fields start_date and end_date which default to empty.
`Started`(args, *kwargs)	Adds two fields `start_date` and `start_time`.
`Today`([verbose_name])	A `ParameterPanel` with a field today that defaults to today.
`Weekly`([verbose_name_start, verbose_name_end])	An `ObservedDateRange` which defaults to the current week.
`Yearly`([verbose_name_start, verbose_name_end])	An `ObservedDateRange` for which start_date defaults to Jan 1st and end_date to Dec 31 of the current year.

lino.mixins.periods.rangetext(self, fmt=<function fdl>, empty_text='')¶

Return a textual representation of the given date range.

The date range is to be specified as an object that has two attributes start_date and end_date.

See tested examples in aids : Aid grantings. Also used by lino_xl.lib.vat.

class lino.mixins.periods.CombinedDateTime(*args, **kwargs)¶

Bases: Model

Mixin for models which have at least one couple of date and time fields which form a kind of editable timestamp field.

get_time_zone()¶

The time zone for the date and time fields in this model.

Expected to always return an instance of lino.modlib.about.choicelists.TimeZone.

May get overridden to return the author's timezone.

set_datetime(name, value)¶: Given a datetime value, update the two corresponding fields FOO_date and FOO_time (where FOO is specified in name which must be either "start" or "end").

get_datetime(name, altname=None)¶

Return a datetime value from the two corresponding date and time fields.

name can be 'start' or 'end'.

The optional altname can be used e.g. in a single-day calendar event to support having end_date empty, meaning "same as start_date". In that case you should ask get_datetime("end", "start").

class lino.mixins.periods.Started(*args, **kwargs)¶

Bases: CombinedDateTime

Adds two fields start_date and start_time.

start_date¶

start_time¶

save(*args, **kw)¶: Fills default value "today" to start_date

class lino.mixins.periods.Ended(*args, **kwargs)¶

Bases: CombinedDateTime

Mixin for models with two fields end_date and end_time.

end_date¶

end_time¶

get_duration()¶: Return the duration in hours.

class lino.mixins.periods.DateRange(*args, **kwargs)¶

Bases: DateRangeObservable

Mixin for models that represent a period defined by a start date and an end date.

Designed for usage with lino.modlib.system.PeriodEvents.

class lino.mixins.periods.ObservedDateRange(verbose_name_start='Date from', verbose_name_end='until', **kwargs)¶

Bases: ParameterPanel

lino.core.param_panel.ParameterPanel with two fields start_date and end_date which default to empty.

Note that you must define yourself a get_request_queryset method in order to actually use these two parameter fields.

class lino.mixins.periods.Yearly(verbose_name_start='Date from', verbose_name_end='until', **kwargs)¶

Bases: ObservedDateRange

An ObservedDateRange for which start_date defaults to Jan 1st and end_date to Dec 31 of the current year.

class lino.mixins.periods.Monthly(verbose_name_start='Date from', verbose_name_end='until', **kwargs)¶

Bases: ObservedDateRange

An ObservedDateRange which defaults to the current month.

class lino.mixins.periods.Weekly(verbose_name_start='Date from', verbose_name_end='until', **kwargs)¶

Bases: ObservedDateRange

An ObservedDateRange which defaults to the current week.

class lino.mixins.periods.Today(verbose_name='Situation on', **kw)¶

Bases: ParameterPanel

A ParameterPanel with a field today that defaults to today.