94 lines
2.5 KiB
Python
94 lines
2.5 KiB
Python
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from django.db import models
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from django.template import loader
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from locpick import settings
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from locpick.widget import LocationPickerWidget
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class LocationField(models.CharField):
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def __init__(self, *args, **kwargs):
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kwargs['max_length'] = 100
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return super(LocationField, self).__init__(*args, **kwargs)
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def formfield(self, **kwargs):
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kwargs['widget'] = LocationPickerWidget
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return super(LocationField, self).formfield(**kwargs)
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def contribute_to_class(self, cls, name):
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super(LocationField, self).contribute_to_class(cls, name)
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setattr(cls, self.name, LocationFieldDescriptor(self))
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class LocationFieldDescriptor(object):
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def __init__(self, field):
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self.field = field
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def __get__(self, instance=None, owner=None):
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if instance is None:
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raise AttributeError(
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"The '%s' attribute can only be accessed from %s instances."
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% (self.field.name, owner.__name__))
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return Map(instance.__dict__[self.field.name])
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def __set__(self, instance, value):
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instance.__dict__[self.field.name] = value
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class Map(object):
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def __init__(self, value):
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self.value = value
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self.position = 49.340119, 10.890325
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self.center = 49.340119, 10.890325
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self.zoom = 4
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if value:
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values = value.split(',')
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self.zoom = int(values.pop())
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values = [str(float(it)) for it in values]
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self.position = values[0], values[1]
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self.center = values[2], values[3]
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def __str__(self):
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return str(self.value)
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def __unicode__(self):
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return unicode(self.value)
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def __repr__(self):
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return unicode(self)
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def __nonzero__(self):
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return bool(self.value)
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def render_map(self, width=settings.DEFAULT_MAP_WIDTH, height=settings.DEFAULT_MAP_HEIGHT):
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return loader.render_to_string(
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'locpick/map.html',
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{
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'id': id(self),
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'map': self,
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'width': width,
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'height': height,
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}
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)
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@property
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def external_url(self):
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return "http://maps.google.com/?ll=%s,%s&z=%s&q=%s,%s" % (
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self.center[0],
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self.center[1],
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self.zoom,
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self.position[0],
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self.position[1],
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)
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try:
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from south.modelsinspector import add_introspection_rules
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except ImportError:
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pass
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else:
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add_introspection_rules([], [r"^locpick\.field\.LocationField"])
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