Revert "Autocomplete from GIS list of CRSs.."

This reverts commit dce53630f7.

apps/map/models.py

@@ -1,32 +1,17 @@
 import datetime
 from urllib import parse
-
 from django.contrib.gis.db import models
 from django.contrib.auth.models import User
-from django.db import connection
-from django.utils.translation import ugettext as _
-from django.template.defaultfilters import slugify
-
 from django_extensions.db.fields import AutoSlugField
 from django_countries.fields import CountryField
+from django.utils.translation import ugettext as _
+from django.template.defaultfilters import slugify
 from multiselectfield import MultiSelectField
 from phonenumber_field.modelfields import PhoneNumberField
 
 from . import validators
 
 
-class SpatialRefSys(connection.ops.spatial_ref_sys()):
-    def __str__(self):
-        return self.__unicode__()
-
-    def __unicode__(self):
-        return '{0.auth_name}:{0.auth_srid} {0.name}'.format(self)
-
-    class Meta:
-        proxy = True
-        verbose_name = "spatial reference system"
-
-
 class Shapefile(models.Model):
     file = models.FileField(
         upload_to='shapefiles/',
@@ -1022,9 +1007,13 @@ class CaseStudy(models.Model):
     )
 
     # 4.3.2
-    coordinate_reference_system = models.ForeignKey(
-        SpatialRefSys, null=True, blank=True,
-        default=4326
+    coordinate_reference_system = models.CharField(
+        verbose_name=_("Coordinate reference system"),
+        help_text=_("Enter the coordinate reference system of the shapefiles."),
+        max_length=12,
+        default=None,
+        null=True,
+        blank=True
     )
 
     # 4.3.3