Changes between Initial Version and Version 1 of Ticket #9364


Ignore:
Timestamp:
Oct 14, 2008, 11:17:38 AM (16 years ago)
Author:
jbronn
Comment:

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  • Ticket #9364 – Description

    initial v1  
    1313class TexasCity(City):
    1414    tx_county = models.CharField(max_length=30)
     15    objects = models.GeoManager() # Why does this need to be explicit?
    1516
    1617    def __unicode__(self):
    … …  
    2021When performing the following query:
    2122{{{
    22 In [4]: qs = TexasCity.objects.filter(point__distance_lte=(pnt, D(mi=5)))
     23In [4]: qs = TexasCity.objects.distance(pnt)
    2324}}}
    2425
    25 This error is raised:
     26This SQL is generated, which is incorrect (there is no "point" column on the `TexasCity` model):
    2627{{{
    27 FieldError                                Traceback (most recent call last)
    28 
    29 /Users/jbronn/geodjango/<ipython console> in <module>()
    30 
    31 /Users/jbronn/hg/django/gis/django/db/models/manager.pyc in filter(self, *args, **kwargs)
    32     100
    33     101     def filter(self, *args, **kwargs):
    34 --> 102         return self.get_query_set().filter(*args, **kwargs)
    35     103
    36     104     def complex_filter(self, *args, **kwargs):
    37 
    38 /Users/jbronn/hg/django/gis/django/db/models/query.pyc in filter(self, *args, **kwargs)
    39     487         set.
    40     488         """
    41 --> 489         return self._filter_or_exclude(False, *args, **kwargs)
    42     490
    43     491     def exclude(self, *args, **kwargs):
    44 
    45 /Users/jbronn/hg/django/gis/django/db/models/query.pyc in _filter_or_exclude(self, negate, *args, **kwargs)
    46     505             clone.query.add_q(~Q(*args, **kwargs))
    47     506         else:
    48 --> 507             clone.query.add_q(Q(*args, **kwargs))
    49     508         return clone
    50     509
    51 
    52 /Users/jbronn/hg/django/gis/django/db/models/sql/query.pyc in add_q(self, q_object, used_aliases)
    53    1246                 else:
    54    1247                     self.add_filter(child, connector, q_object.negated,
    55 -> 1248                             can_reuse=used_aliases)
    56    1249                 if connector == OR:
    57    1250                     # Aliases that were newly added or not used at all need to
    58 
    59 /Users/jbronn/hg/django/gis/django/db/models/sql/query.pyc in add_filter(self, filter_expr, connector, negate, trim, can_reuse, process_extras)
    60    1121             field, target, opts, join_list, last, extra_filters = self.setup_joins(
    61    1122                     parts, opts, alias, True, allow_many, can_reuse=can_reuse,
    62 -> 1123                     negate=negate, process_extras=process_extras)
    63    1124         except MultiJoin, e:
    64    1125             self.split_exclude(filter_expr, LOOKUP_SEP.join(parts[:e.level]),
    65 
    66 /Users/jbronn/hg/django/gis/django/db/models/sql/query.pyc in setup_joins(self, names, opts, alias, dupe_multis, allow_many, allow_explicit_fk, can_reuse, negate, process_extras)
    67    1449
    68    1450         if pos != len(names) - 1:
    69 -> 1451             raise FieldError("Join on field %r not permitted." % name)
    70    1452
    71    1453         return field, target, opts, joins, last, extra_filters
    72 
    73 FieldError: Join on field 'point' not permitted.
     28In [23]: qs.query.as_sql()
     29Out[23]:
     30(u'SELECT (ST_distance_sphere("tz_texascity"."point",%s)) AS "distance", "tz_city"."id", "tz_city"."name", "tz_city"."point", "tz_texascity"."city_ptr_id", "tz_texascity"."tx_county" FROM "tz_texascity" INNER JOIN "tz_city" ON ("tz_texascity"."city_ptr_id" = "tz_city"."id")',
     31 (<django.contrib.gis.db.backend.postgis.adaptor.PostGISAdaptor object at 0x319b610>,))
    7432}}}
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