Adust the as_table tag to render a pick link if appropriate
The templates are adjusted to pass on a 'reference' value, which
is the url_name of the view from which the entity should be picked.
The as_table (and related) function(s) construct and then pass on
this argument and enable takes_contex so that we have access to the
context of the enclosing template.
We only extract ReferenceProperties that end with '_link_id' since
that is how all RP's are currently named. It is not possible to
create a field with the same name as the RP, as GAE will try to
interpret it's contents as the key of an entity before even calling
any function we can override.
Patch by: Sverre Rabbelier
import unittest
from django.contrib.gis.tests.utils import mysql, no_mysql, oracle, postgis
if not mysql:
from django.contrib.gis.models import SpatialRefSys
test_srs = ({'srid' : 4326,
'auth_name' : ('EPSG', True),
'auth_srid' : 4326,
'srtext' : 'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]',
'proj4' : '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs ',
'spheroid' : 'WGS 84', 'name' : 'WGS 84',
'geographic' : True, 'projected' : False,
'ellipsoid' : (6378137.0, 6356752.3, 298.257223563), # From proj's "cs2cs -le" and Wikipedia (semi-minor only)
'eprec' : (1, 1, 9),
},
{'srid' : 32140,
'auth_name' : ('EPSG', False),
'auth_srid' : 32140,
'srtext' : 'PROJCS["NAD83 / Texas South Central",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["standard_parallel_1",30.28333333333333],PARAMETER["standard_parallel_2",28.38333333333333],PARAMETER["latitude_of_origin",27.83333333333333],PARAMETER["central_meridian",-99],PARAMETER["false_easting",600000],PARAMETER["false_northing",4000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","32140"]]',
'proj4' : '+proj=lcc +lat_1=30.28333333333333 +lat_2=28.38333333333333 +lat_0=27.83333333333333 +lon_0=-99 +x_0=600000 +y_0=4000000 +ellps=GRS80 +datum=NAD83 +units=m +no_defs ',
'spheroid' : 'GRS 1980', 'name' : 'NAD83 / Texas South Central',
'geographic' : False, 'projected' : True,
'ellipsoid' : (6378137.0, 6356752.31414, 298.257222101), # From proj's "cs2cs -le" and Wikipedia (semi-minor only)
'eprec' : (1, 5, 10),
},
)
class SpatialRefSysTest(unittest.TestCase):
@no_mysql
def test01_retrieve(self):
"Testing retrieval of SpatialRefSys model objects."
for sd in test_srs:
srs = SpatialRefSys.objects.get(srid=sd['srid'])
self.assertEqual(sd['srid'], srs.srid)
# Some of the authority names are borked on Oracle, e.g., SRID=32140.
# also, Oracle Spatial seems to add extraneous info to fields, hence the
# the testing with the 'startswith' flag.
auth_name, oracle_flag = sd['auth_name']
if postgis or (oracle and oracle_flag):
self.assertEqual(True, srs.auth_name.startswith(auth_name))
self.assertEqual(sd['auth_srid'], srs.auth_srid)
# No proj.4 and different srtext on oracle backends :(
if postgis:
self.assertEqual(sd['srtext'], srs.wkt)
self.assertEqual(sd['proj4'], srs.proj4text)
@no_mysql
def test02_osr(self):
"Testing getting OSR objects from SpatialRefSys model objects."
for sd in test_srs:
sr = SpatialRefSys.objects.get(srid=sd['srid'])
self.assertEqual(True, sr.spheroid.startswith(sd['spheroid']))
self.assertEqual(sd['geographic'], sr.geographic)
self.assertEqual(sd['projected'], sr.projected)
self.assertEqual(True, sr.name.startswith(sd['name']))
# Testing the SpatialReference object directly.
if postgis:
srs = sr.srs
self.assertEqual(sd['proj4'], srs.proj4)
self.assertEqual(sd['srtext'], srs.wkt)
@no_mysql
def test03_ellipsoid(self):
"Testing the ellipsoid property."
for sd in test_srs:
# Getting the ellipsoid and precision parameters.
ellps1 = sd['ellipsoid']
prec = sd['eprec']
# Getting our spatial reference and its ellipsoid
srs = SpatialRefSys.objects.get(srid=sd['srid'])
ellps2 = srs.ellipsoid
for i in range(3):
param1 = ellps1[i]
param2 = ellps2[i]
self.assertAlmostEqual(ellps1[i], ellps2[i], prec[i])
def suite():
s = unittest.TestSuite()
s.addTest(unittest.makeSuite(SpatialRefSysTest))
return s
def run(verbosity=2):
unittest.TextTestRunner(verbosity=verbosity).run(suite())