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Peewee v3.14.0 Release Notes

Release Date: 2020-11-07 // over 3 years ago

  • 🚀 This release has been a bit overdue and there are numerous small improvements
    🛠 and bug-fixes. The bugfix that prompted this release is #2293, which is a
    regression in the Django-inspired .filter() APIs that could cause some
    filter expressions to be discarded from the generated SQL. Many thanks for the
    excellent bug report, Jakub.

    • Add an experimental helper, shortcuts.resolve_multimodel_query(), for resolving multiple models used in a compound select query.
    • ➕ Add a lateral() method to select query for use with lateral joins, refs issue #2205.
    • ➕ Added support for nested transactions (savepoints) in cockroach-db (requires 20.1 or newer).
    • Automatically escape wildcards passed to string-matching methods, refs #2224.
    • 👍 Allow index-type to be specified on MySQL, refs #2242.
    • ➕ Added a new API, converter() to be used for specifying a function to use to convert a row-value pulled off the cursor, refs #2248.
    • ➕ Add set() and clear() method to the bitfield flag descriptor, refs #2257.
    • ➕ Add support for range types with IN and other expressions.
    • 👌 Support CTEs bound to compound select queries, refs #2289.

    🐛 Bug-fixes

    • 🛠 Fix to return related object id when accessing via the object-id descriptor, when the related object is not populated, refs #2162.
    • 🛠 Fix to ensure we do not insert a NULL value for a primary key.
    • 🛠 Fix to conditionally set the field/column on an added column in a migration, refs #2171.
    • 🛠 Apply field conversion logic to model-class values. Relocates the logic from issue #2131 and fixes #2185.
    • 👯 Clone node before modifying it to be flat in an enclosed nodelist expr, fixes issue #2200.
    • 🛠 Fix an invalid item assignment in nodelist, refs #2220.
    • 🛠 Fix an incorrect truthiness check used with save() and only=, refs #2269.
    • Fix regression in filter() where using both *args and **kwargs caused the expressions passed as args to be discarded. See #2293.

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