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alias function partly broken in peewee 3.9.4 and 3.9.5

See original GitHub issue

I just upgraded from peewee 3.9.3 to 3.9.5 and suddenly I am getting the following error:

    User, pw.JOIN.LEFT_OUTER, on=(User.id == recipemodel.Recipe.created_by).alias("a")
  File "/home/anne/projects/recapi/venv/lib/python3.7/site-packages/peewee.py", line 698, in inner
    method(clone, *args, **kwargs)
  File "/home/anne/projects/recapi/venv/lib/python3.7/site-packages/peewee.py", line 6603, in join
    on, attr, constructor = self._normalize_join(src, dest, on, attr)
  File "/home/anne/projects/recapi/venv/lib/python3.7/site-packages/peewee.py", line 6534, in _normalize_join
    attr == fk_field.object_id_name and not is_backref:
AttributeError: 'AutoField' object has no attribute 'object_id_name'

The same error occurs in peewee 3.9.4 but everything is running fine in 3.9.3. The code piece that breaks looks like this:

recipes = recipemodel.Recipe.select(
    recipemodel.Recipe, User, Changed, pw.fn.group_concat(tagmodel.Tag.tagname).alias("taglist")
).where(
    recipemodel.Recipe.published == published
).join(
    User, pw.JOIN.LEFT_OUTER, on=(User.id == recipemodel.Recipe.created_by).alias("a")
).switch(
    recipemodel.Recipe
).join(
    Changed, pw.JOIN.LEFT_OUTER, on=(Changed.id == recipemodel.Recipe.changed_by).alias("b")
).switch(
    recipemodel.Recipe
).join(
    tagmodel.RecipeTags, pw.JOIN.LEFT_OUTER, on=(tagmodel.RecipeTags.recipeID == recipemodel.Recipe.id)
).join(
    tagmodel.Tag, pw.JOIN.LEFT_OUTER, on=(tagmodel.Tag.id == tagmodel.RecipeTags.tagID)
).group_by(recipemodel.Recipe.id)

It’s the .alias("a") and .alias("b") bits that seem to be causing the trouble.

Please let me know if there is any relevant information lacking from this bug report.

Issue Analytics

State:
Created 4 years ago
Comments:7 (5 by maintainers)

Top GitHub Comments

1reaction

coleifercommented, Jun 6, 2019

Oh, guess not, done.

1reaction

coleifercommented, Jun 3, 2019

Fixed, pushing a new release 3.9.6

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