def format_column_value(self, value):
"""
Sets the display based on the values of the display columns separated
by single space.
:param value: Primary key value fof the parent entity.
:type value: int
:return: Display extracted from the selected parent record.
:rtype: str
"""
if value in self._parent_entity_cache:
rec = self._parent_entity_cache[value]
else:
# Query value
rec = self._p_entity_obj.queryObject().filter(
self._p_entity_cls.id == value).first()
if rec is None:
return ''
else:
# Add to cache
self._parent_entity_cache[rec.id] = rec
return RelatedEntityLineEdit.process_display(self._column, rec)
def _create_widget(cls, c, parent, host=None):
re_le = RelatedEntityLineEdit(c, parent)
re_le.setObjectName(u'{0}_{1}'.format(cls._TYPE_PREFIX, c.name))
return re_le