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Merge pull request #1025 from MRigal/feature/259-improve-error-detection-for-invalid-query

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Improve error message for invalid query
This commit is contained in:
Matthieu Rigal
2015-06-12 09:13:18 +02:00
parent 9e70152076 a2f0f20284
commit 57e3a40321
3 changed files with 17 additions and 3 deletions
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9
mongoengine/base/document.py
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@@ -983,8 +983,13 @@ class BaseDocument(object):
if hasattr(getattr(field, 'field', None), 'lookup_member'):
new_field = field.field.lookup_member(field_name)
else:
# Look up subfield on the previous field
new_field = field.lookup_member(field_name)
# Look up subfield on the previous field or raise
try:
new_field = field.lookup_member(field_name)
except AttributeError:
raise LookUpError('Cannot resolve subfield or operator {} '
'on the field {}'.format(
field_name, field.name))
if not new_field and isinstance(field, ComplexBaseField):
if hasattr(field.field, 'document_type') and cls._dynamic \
and field.field.document_type._dynamic: