Fixed #18367 -- Allowed LayerMapping to store strings in TextField.

Thanks geoffhing@gmail.com for the report.

django/contrib/gis/tests/layermap/models.py

@@ -17,6 +17,7 @@ class CountyFeat(models.Model):
 
 class City(models.Model):
     name = models.CharField(max_length=25)
+    name_txt = models.TextField(default='')
     population = models.IntegerField()
     density = models.DecimalField(max_digits=7, decimal_places=1)
     dt = models.DateField()

django/contrib/gis/tests/layermap/tests.py

@@ -272,3 +272,12 @@ class LayerMapTest(TestCase):
         lm = LayerMapping(Invalid, invalid_shp, invalid_mapping,
                           source_srs=4326)
         lm.save(silent=True)
+
+    def test_textfield(self):
+        "Tests that String content fits also in a TextField"
+        mapping = copy(city_mapping)
+        mapping['name_txt'] = 'Name'
+        lm = LayerMapping(City, city_shp, mapping)
+        lm.save(silent=True, strict=True)
+        self.assertEqual(City.objects.count(), 3)
+        self.assertEqual(City.objects.all().order_by('name_txt')[0].name_txt, "Houston")

django/contrib/gis/utils/layermapping.py

@@ -332,7 +332,7 @@ class LayerMapping(object):
                 val = unicode(ogr_field.value, self.encoding)
             else:
                 val = ogr_field.value
-                if len(val) > model_field.max_length:
+                if model_field.max_length and len(val) > model_field.max_length:
                     raise InvalidString('%s model field maximum string length is %s, given %s characters.' %
                                         (model_field.name, model_field.max_length, len(val)))
         elif isinstance(ogr_field, OFTReal) and isinstance(model_field, models.DecimalField):