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turn abstract models into mixins

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Laura Klünder 2017-05-08 16:40:22 +02:00
parent 9e79ca74ae
commit 963694395e
8 changed files with 33 additions and 87 deletions
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33
src/c3nav/mapdata/models/geometry/space.py
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@ -1,43 +1,27 @@
from collections import OrderedDict
from django.db import models
from django.utils.translation import ugettext_lazy as _
from shapely.geometry import CAP_STYLE, JOIN_STYLE, mapping
from c3nav.mapdata.fields import GeometryField
from c3nav.mapdata.models.geometry.base import GeometryFeature, GeometryFeatureBase
from c3nav.mapdata.models.geometry.base import GeometryMixin
from c3nav.mapdata.utils.json import format_geojson
SPACE_FEATURE_TYPES = OrderedDict()
class SpaceFeatureBase(GeometryFeatureBase):
def __new__(mcs, name, bases, attrs):
cls = super().__new__(mcs, name, bases, attrs)
if not cls._meta.abstract:
SPACE_FEATURE_TYPES[name.lower()] = cls
return cls
class SpaceFeature(GeometryFeature, metaclass=SpaceFeatureBase):
"""
a map feature that has a geometry and belongs to a space
"""
space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
class Meta:
abstract = True
class SpaceGeometryMixin(GeometryMixin):
def get_geojson_properties(self):
result = super().get_geojson_properties()
result['space'] = self.space.id
return result
class StuffedArea(SpaceFeature):
class StuffedArea(SpaceGeometryMixin, models.Model):
"""
A slow area with many tables or similar. Avoid it from routing by slowing it a bit down
"""
space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
geometry = GeometryField('polygon')
class Meta:
@ -46,10 +30,11 @@ class StuffedArea(SpaceFeature):
default_related_name = 'stuffedareas'
class Stair(SpaceFeature):
class Stair(SpaceGeometryMixin, models.Model):
"""
A stair
"""
space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
geometry = GeometryField('polyline')
class Meta:
@ -80,10 +65,11 @@ class Stair(SpaceFeature):
))
class Obstacle(SpaceFeature):
class Obstacle(SpaceGeometryMixin, models.Model):
"""
An obstacle
"""
space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
geometry = GeometryField('polygon')
class Meta:
@ -92,10 +78,11 @@ class Obstacle(SpaceFeature):
default_related_name = 'obstacles'
class LineObstacle(SpaceFeature):
class LineObstacle(SpaceGeometryMixin, models.Model):
"""
An obstacle that is a line with a specific width
"""
space = models.ForeignKey('mapdata.Space', on_delete=models.CASCADE, verbose_name=_('space'))
geometry = GeometryField('polyline')
width = models.DecimalField(_('obstacle width'), max_digits=4, decimal_places=2, default=0.15)