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lino.utils.choosers

Extends the possibilities for defining choices for fields of a Django model.

• Context-sensitive choices (see Introduction to Combo boxes)

• Non-limiting choices (force_selection False) : specify a pick list of suggestions but leave the possibility to store manually entered values

• How to define a learning foreign key

Example values in Lino utilities.

Functions

action_chooser(**options)
check_for_chooser(holder, field)
chooser(**options)	Decorator which turns the method into a chooser.
get_choosers_dict(holder)
make_converter(f[, lookup_fields])
noop(x)
uses_simple_values(holder, fld)	used by lino.core.store

Classes

BaseChooser()
ChoiceConverter(field)	Converter for ChoiceListField.
ChoicesChooser(field)
Chooser(model, field, meth)	Holds information about the possible choices of a field.
Converter(field)
DateConverter(field)
DecimalConverter(field)
FieldChooser(field)
ForeignKeyConverter(field, lookup_field)	Converter for ForeignKey fields.
GenericForeignKeyConverter(field)	Converter for GenericForeignKey fields.
LookupConverter(field, lookup_field)	A Converter for ForeignKey and ManyToManyField.
ManyToManyConverter(field, lookup_field)	Converter for ManyToMany fields.

class lino.utils.choosers.LookupConverter(field, lookup_field)

Bases: Converter

A Converter for ForeignKey and ManyToManyField. If the lookup_field is a BabelField, then it tries all available languages.

class lino.utils.choosers.ChoiceConverter(field)

Bases: Converter

Converter for ChoiceListField.

If you specify a string, then it can be a value or a name.

class lino.utils.choosers.ForeignKeyConverter(field, lookup_field)

Bases: LookupConverter

Converter for ForeignKey fields.

class lino.utils.choosers.GenericForeignKeyConverter(field)

Bases: Converter

Converter for GenericForeignKey fields.

class lino.utils.choosers.ManyToManyConverter(field, lookup_field)

Bases: LookupConverter

Converter for ManyToMany fields.

class lino.utils.choosers.Chooser(model, field, meth)

Bases: FieldChooser

Holds information about the possible choices of a field.

get_data_elem(name)

Calls dd.Actor.get_data_elem() or dd.Model.get_data_elem() or dd.Action.get_data_elem().

get_choices(**context)

Return a list of choices for this chooser, using keyword parameters as context.

get_request_choices(ar, tbl)

Return a list of choices for this chooser, using a HttpRequest to build the context.

lino.utils.choosers.uses_simple_values(holder, fld)

used by lino.core.store

lino.utils.choosers.chooser(**options)

Decorator which turns the method into a chooser.