def _get_model(self):
if not self.extracted:
if not self.extract():
raise ExtractionError("can't extract {0}".format(str(self)))
# TODO: make this less shitty
shps = [
os.path.join(self.extract_path, filename)
for filename in os.listdir(self.extract_path)
if filename.endswith("shp")
]
if len(shps) != 1:
Archive.skipped.add(str(self))
return ""
filename = shps[0]
name = self.feature.capitalize()
model = ogrinspect(filename, name, srid=4269, multi_geom=True, imports=False)
if name in Archive.modelcache:
if Archive.modelcache[name] == model:
print("match")
self._model = model
else:
raise ModelError("this shouldn't happen!")
Archive.modelcache[self.feature] = model
return model
gtype = data_source[layer_key].geom_type
if multi_geom:
gtype.to_multi()
_mapping[geom_name] = str(gtype).upper()
return _mapping
def ogrinspect(*args, **kwargs):
"""
Given a data source (either a string or a DataSource object) and a string
model name this function will generate a GeoDjango model.
Usage:
>>> from django.contrib.gis.utils import ogrinspect
>>> ogrinspect('/path/to/shapefile.shp','NewModel')
...will print model definition to stout
or put this in a Python script and use to redirect the output to a new
model like:
$ python generate_model.py > myapp/models.py
# generate_model.py
from django.contrib.gis.utils import ogrinspect
shp_file = 'data/mapping_hacks/world_borders.shp'
model_name = 'WorldBorders'
print(ogrinspect(shp_file, model_name, multi_geom=True, srid=4326,
geom_name='shapes', blank=True))
def gishandle( self, model_name, filepath, *args, **options ):
from django.contrib.gis.utils import ogrinspect, mapping
print ogrinspect( filepath, model_name, srid=options['srid'], blank=True )
print "\n\n%s_mapping = %s" % ( model_name.lower(), mapping( filepath ))
