diff options
Diffstat (limited to 'lib/sqlalchemy/sql/elements.py')
| -rw-r--r-- | lib/sqlalchemy/sql/elements.py | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/elements.py b/lib/sqlalchemy/sql/elements.py index c8504f21f..ece6bce9e 100644 --- a/lib/sqlalchemy/sql/elements.py +++ b/lib/sqlalchemy/sql/elements.py @@ -688,6 +688,10 @@ class ColumnElement(operators.ColumnOperators, ClauseElement): """ + _allow_label_resolve = True + """A flag that can be flipped to prevent a column from being resolvable + by string label name.""" + _alt_names = () def self_group(self, against=None): @@ -704,8 +708,6 @@ class ColumnElement(operators.ColumnOperators, ClauseElement): else: return super(ColumnElement, self)._negate() - _allow_label_resolve = True - @util.memoized_property def type(self): return type_api.NULLTYPE @@ -1248,6 +1250,8 @@ class TextClause(Executable, ClauseElement): # interpreted in a column expression situation key = _label = _resolve_label = None + _allow_label_resolve = False + def __init__( self, text, @@ -2943,8 +2947,14 @@ class Label(ColumnElement): def get_children(self, **kwargs): return self.element, - def _copy_internals(self, clone=_clone, **kw): + def _copy_internals(self, clone=_clone, anonymize_labels=False, **kw): self.element = clone(self.element, **kw) + if anonymize_labels: + self.name = _anonymous_label( + '%%(%d %s)s' % ( + id(self), getattr(self.element, 'name', 'anon')) + ) + self.key = self._label = self._key_label = self.name @property def _from_objects(self): |