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