id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 9903 Model._meta._name_map is missing unless you load an object from the database pavlo@… nobody "I need to be able to validate that input parameters are the same length as the max_length field. I figured out how to get back the field object use {{{Model._meta.get_field_by_name()}}}, but I still want to be able to check whether the field exists before I call that method. My code uses {{{Model._meta._name_map}}}, but it doesn't look like it is instantiated until '''after''' you load an object from the database. This seems wrong to me, considering that it is suppose to be an attribute on the model class and not dependent on a particular In my example below, I show you can't get to {{{_meta._name_map}}} until after you load an object: {{{ In [1]: from graffiti.models import * In [2]: len(Replica._meta._name_map) --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) /home/pavlo/Documents/Graffiti/graffiti/src/tracker/ in () AttributeError: 'Options' object has no attribute '_name_map' In [3]: replica = Replica() In [4]: len(Replica._meta._name_map) --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) /home/pavlo/Documents/Graffiti/graffiti/src/tracker/ in () AttributeError: 'Options' object has no attribute '_name_map' In [5]: replica = Replica.objects.get(id=1) In [6]: len(Replica._meta._name_map) Out[6]: 19 }}}" closed Uncategorized 1.0 invalid Unreviewed 0 0 0 0 0 0