FeatureSection

Overview

A namespaced section that a feature app contributes to class Vueda.

name matches the nested class an author writes, exactly. app_label is the Django app label of the owning feature app. validate runs after option resolution and returns error messages for rules that span options. A failed section is reported by system checks and never reaches contribute. contribute runs once per concrete model, right after Django prepares it, and may call model.add_to_class() to add fields or other behaviour.

contribute_order sequences the contributors, lowest first, with section name breaking a tie. A feature that reads the finished field list must sort after every feature that adds a field, or it sees a model that is still being assembled.

__init__

Signature

__init__(name, app_label, options, validate, contribute, contribute_order)

Parameters

Name	Type	Required	Default	Description
name	str	yes
app_label	str	yes
options	collections.abc.Mapping[str, vueda.core.features.FeatureOption]	no	<factory>
validate	collections.abc.Callable[[type, collections.abc.Mapping[str, typing.Any]], collections.abc.Iterable[str]] | None	no	None
contribute	collections.abc.Callable[[type, typing.Any], None] | None	no	None
contribute_order	int	no	0

Source

<string>

app_label

contribute

contribute_order

name

options

validate

Source

server/vueda/core/features.py:48