| 133 | ] |
| 134 | |
| 135 | def _check_related_name_is_valid(self): |
| 136 | import keyword |
| 137 | |
| 138 | related_name = self.remote_field.related_name |
| 139 | if related_name is None: |
| 140 | return [] |
| 141 | is_valid_id = ( |
| 142 | not keyword.iskeyword(related_name) and related_name.isidentifier() |
| 143 | ) |
| 144 | if not (is_valid_id or related_name.endswith("+")): |
| 145 | return [ |
| 146 | checks.Error( |
| 147 | "The name '%s' is invalid related_name for field %s.%s" |
| 148 | % ( |
| 149 | self.remote_field.related_name, |
| 150 | self.model._meta.object_name, |
| 151 | self.name, |
| 152 | ), |
| 153 | hint=( |
| 154 | "Related name must be a valid Python identifier or end with a " |
| 155 | "'+'" |
| 156 | ), |
| 157 | obj=self, |
| 158 | id="fields.E306", |
| 159 | ) |
| 160 | ] |
| 161 | return [] |
| 162 | |
| 163 | def _check_related_query_name_is_valid(self): |
| 164 | if self.remote_field.hidden: |