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minor tweaks to code quality in _fields_to_dbfields

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This commit is contained in:
Stefan Wojcik 2017-06-18 17:25:39 -07:00
parent 1d4b1870cf
commit a8d6e59a7a
1 changed files with 21 additions and 12 deletions
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33
mongoengine/queryset/base.py
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@ -1722,25 +1722,33 @@ class BaseQuerySet(object):
return frequencies
def _fields_to_dbfields(self, fields):
"""Translate fields paths to its db equivalents"""
ret = []
"""Translate fields' paths to their db equivalents."""
subclasses = []
document = self._document
if document._meta['allow_inheritance']:
if self._document._meta['allow_inheritance']:
subclasses = [get_document(x)
for x in document._subclasses][1:]
for x in self._document._subclasses][1:]
db_field_paths = []
for field in fields:
field_parts = field.split('.')
try:
field = '.'.join(f if isinstance(f, six.string_types) else f.db_field for f in
document._lookup_field(field.split('.')))
ret.append(field)
field = '.'.join(
f if isinstance(f, six.string_types) else f.db_field
for f in self._document._lookup_field(field_parts)
)
db_field_paths.append(field)
except LookUpError as err:
found = False
# If a field path wasn't found on the main document, go
# through its subclasses and see if it exists on any of them.
for subdoc in subclasses:
try:
subfield = '.'.join(f if isinstance(f, six.string_types) else f.db_field for f in
subdoc._lookup_field(field.split('.')))
ret.append(subfield)
subfield = '.'.join(
f if isinstance(f, six.string_types) else f.db_field
for f in subdoc._lookup_field(field_parts)
)
db_field_paths.append(subfield)
found = True
break
except LookUpError:
@ -1748,7 +1756,8 @@ class BaseQuerySet(object):
if not found:
raise err
return ret
return db_field_paths
def _get_order_by(self, keys):
"""Given a list of MongoEngine-style sort keys, return a list