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| author | Tim Graham <timograham@gmail.com> | 2024-07-16 14:00:30 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-16 15:00:30 -0300 |
| commit | 252eaca87fc0459dae71c771ca94bf2772127e5a (patch) | |
| tree | 97cc1a19d116630e7bf7b1bc8a5993132995263f /django/db/models/sql/compiler.py | |
| parent | 082fe2b5a83571dec4aa97580af0fe8cf2a5214e (diff) | |
Doc'd purpose of tuple() in SQLCompiler.get_from_clause().
It was added in 01d440fa1e6b5c62acfa8b3fde43dfa1505f93c6 to
prevent "RuntimeError: OrderedDict mutated during iteration".
That particular issue was fixed in d660cee5bc68b597503c2a16f3d9928d52f93fb4
but the issue could remain in Join.as_sql() subclasses.
Co-authored-by: Simon Charette <charette.s@gmail.com>
Diffstat (limited to 'django/db/models/sql/compiler.py')
| -rw-r--r-- | django/db/models/sql/compiler.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py index fe22163961..98feb42716 100644 --- a/django/db/models/sql/compiler.py +++ b/django/db/models/sql/compiler.py @@ -1134,6 +1134,9 @@ class SQLCompiler: """ result = [] params = [] + # Copy alias_map to a tuple in case Join.as_sql() subclasses (objects + # in alias_map) alter compiler.query.alias_map. That would otherwise + # raise "RuntimeError: dictionary changed size during iteration". for alias, from_clause in tuple(self.query.alias_map.items()): if not self.query.alias_refcount[alias]: continue |