Manually save the instance raises DataError: value too long for type character varying(42)

[elcolie]

django==1.11.7
django-geoposition==0.3.0

models

class Company(models.Model):
    ...
    position = GeopositionField()

In the shell I did

comp = Company(name='El Corporation', number='111', country='TH', position=GeopositionField(37, -112))

It is fine except when I commit to database

---------------------------------------------------------------------------
DataError                                 Traceback (most recent call last)
~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/backends/utils.py in execute(self, sql, params)
     64             else:
---> 65                 return self.cursor.execute(sql, params)
     66

DataError: value too long for type character varying(42)


The above exception was the direct cause of the following exception:

DataError                                 Traceback (most recent call last)
<ipython-input-14-7c47c29d69ab> in <module>()
----> 1 comp.save()

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/base.py in save(self, force_insert, force_update, using, update_fields)
    806
    807         self.save_base(using=using, force_insert=force_insert,
--> 808                        force_update=force_update, update_fields=update_fields)
    809     save.alters_data = True
    810

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/base.py in save_base(self, raw, force_insert, force_update, using, update_fields)
    836             if not raw:
    837                 self._save_parents(cls, using, update_fields)
--> 838             updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
    839         # Store the database on which the object was saved
    840         self._state.db = using

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/base.py in _save_table(self, raw, cls, force_insert, force_update, using, update_fields)
    922
    923             update_pk = meta.auto_field and not pk_set
--> 924             result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
    925             if update_pk:
    926                 setattr(self, meta.pk.attname, result)

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/base.py in _do_insert(self, manager, using, fields, update_pk, raw)
    961         """
    962         return manager._insert([self], fields=fields, return_id=update_pk,
--> 963                                using=using, raw=raw)
    964
    965     def delete(self, using=None, keep_parents=False):

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/manager.py in manager_method(self, *args, **kwargs)
     83         def create_method(name, method):
     84             def manager_method(self, *args, **kwargs):
---> 85                 return getattr(self.get_queryset(), name)(*args, **kwargs)
     86             manager_method.__name__ = method.__name__
     87             manager_method.__doc__ = method.__doc__

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/query.py in _insert(self, objs, fields, return_id, raw, using)
   1074         query = sql.InsertQuery(self.model)
   1075         query.insert_values(fields, objs, raw=raw)
-> 1076         return query.get_compiler(using=using).execute_sql(return_id)
   1077     _insert.alters_data = True
   1078     _insert.queryset_only = False

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/models/sql/compiler.py in execute_sql(self, return_id)
   1105         with self.connection.cursor() as cursor:
   1106             for sql, params in self.as_sql():
-> 1107                 cursor.execute(sql, params)
   1108             if not (return_id and cursor):
   1109                 return

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/backends/utils.py in execute(self, sql, params)
     78         start = time()
     79         try:
---> 80             return super(CursorDebugWrapper, self).execute(sql, params)
     81         finally:
     82             stop = time()

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/backends/utils.py in execute(self, sql, params)
     63                 return self.cursor.execute(sql)
     64             else:
---> 65                 return self.cursor.execute(sql, params)
     66
     67     def executemany(self, sql, param_list):

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/utils.py in __exit__(self, exc_type, exc_value, traceback)
     92                 if dj_exc_type not in (DataError, IntegrityError):
     93                     self.wrapper.errors_occurred = True
---> 94                 six.reraise(dj_exc_type, dj_exc_value, traceback)
     95
     96     def __call__(self, func):

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/utils/six.py in reraise(tp, value, tb)
    683             value = tp()
    684         if value.__traceback__ is not tb:
--> 685             raise value.with_traceback(tb)
    686         raise value
    687

~/.pyenv/versions/poink/lib/python3.6/site-packages/django/db/backends/utils.py in execute(self, sql, params)
     63                 return self.cursor.execute(sql)
     64             else:
---> 65                 return self.cursor.execute(sql, params)
     66
     67     def executemany(self, sql, param_list):

DataError: value too long for type character varying(42)

[dezmaeth]

i got the same issue #98