[dependabot]

Bumps datamodel-code-generator from 0.31.2 to 0.88.0.

Release notes

Sourced from datamodel-code-generator's releases.

0.88.0

Breaking Changes

Code Generation Changes

• Non-object allOf sites now generate the constrained value type instead of an empty model - Without --intersect-allof-keywords, some allOf sites used to be generated as an empty class (class TwoRefsProp(BaseModel): pass, or an empty Struct, dataclass or TypedDict) that rejected every valid value. These are sites whose parts admit no object, for example two integer $refs with a sibling minimum, a $ref to an array schema with minItems, or two string schemas with a pattern each. They are now generated as the intersected value type: a RootModel such as RootModel[conint(ge=3, le=5)] or RootModel[list[str]] for Pydantic v2, and a type alias for dataclasses, msgspec and TypedDict output (for example TwoPatterns: TypeAlias = str). Fields that referenced those classes change with them. Under msgspec or --collapse-root-models, some models are inlined or no longer emitted (for example two_prop: Annotated[int, Meta(ge=4, le=5)]). Merged lookaround patterns add model_config = ConfigDict(regex_engine="python-re") or a from re import compile import, and a nullable site is now typed as a union with None. Code that imports, subclasses or instantiates these former empty classes, or passes dicts to them, must be updated: valid scalar and array values now validate and objects are rejected (#5406)
• Defaults of affected properties follow their new value type with --strip-default-none or --use-default-factory-for-optional-nested-models - A property whose allOf of scalar schemas used to be an empty model now gets the default its value type gets. --use-default-factory-for-optional-nested-models no longer emits a default factory for it, and --strip-default-none keeps the None default only where the type admits null. This can change whether these fields are required and the order of constructor arguments in generated models and dataclasses (#5406)
• Client and server targets keep a schema's own null rejection when it is merged into a nullable model - With --generate-client or --generate-server combined with --reuse-model --collapse-reuse-models, a schema that does not admit null but is merged into an equal nullable model (for example a non-nullable Work collapsed into a nullable Home) no longer takes on the merged model's null. Operations and fields that name it now type their body or result as Home instead of Home | None. Generated client codecs refuse to send or accept None for them, and generated FastAPI servers reject a null request body and answer a bare None result with a 500. Callers or service implementations that passed or returned None there must be updated (#5480)

Error Handling Changes

• Client and view default headers or query that patch a helper-written parameter are now refused - The generated Python client's pagination helpers (iterate, page, next_page), polling helpers (start, resume) and upload helpers (start, resume) used to reject only a call's own extra_headers or extra_query naming a header or query parameter the helper writes. They now also raise ConfigurationError before sending when the client's or a view's (with_options) default_headers or default_query names such a parameter, with a field_path of ("default_headers", name) or ("default_query", name). A client or view set up with such defaults, which used to send these requests, now fails; remove the conflicting default or use a client or view without it for helper calls. A count pagination helper's offset or page position is exempt: a client or view default of it is used as the first position, and only the call's own extra is still refused (#5502)

What's Changed

• Accept an allowlist table whose base is an older release as accepting nothing, and replace the table for 0.87.0 by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5425
• Fit the CI test jobs to the runner concurrency so a run finishes in about five minutes by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5409
• Catch validation-time errors, order-dependent imports and project schemas in the behaviour diff gate by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5403
• Import the builtins that a package's own submodules hide under aliases, so list[str] beside app/list.py names the builtin again by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5402
• Write an allOf whose parts admit no object as the intersection of its parts instead of a model without fields by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5406
• Run the render memo check from a pytest plugin and check the Pydantic config keys in a test by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5433
• Run the fact finality and store write checks from the pytest plugin instead of the package by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5434
• Keep the pass declarations and fact tables in scripts, so the package only runs passes by name by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5443
• Run the model graph and schema location checks from the pytest plugin by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5456
• Run the module import and render plan checks from the pytest plugin by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5457
• Delete the migration comparisons that kept the old computations beside the new ones by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5458
• Keep each decision in one home: a checker that fails on a new site outside its home, and an inventory of the legacy rows by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5422
• Read --intersect-allof-keywords in one place, as four named legacy rows of the intersection core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5423
• Give the client and server decisions their homes in the decision-home checker, so targets cannot re-read the document or re-decide model facts by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5429
• Read every subschema position from one table by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5440
• Let the schema dispatch rows declare the child schemas they type, and split request and response models by asking them by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5441
• Read the object map options in one place, as named legacy rows of the object map home by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5444
• Merge inherited properties in one home of the intersection core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5452
• Build the $ref-sibling and allOf member rows in the intersection core and read the null of intersected parts from the null rule by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5459
• Record a release's behaviour in its own sharded workflow, so the record cannot cancel Publish or skip the release benchmarks by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5466
• Decide the number values each output can write in one place, with one int64 range for msgspec by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5445
• Read and check the keys of an OpenAPI document in one place by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5432
• Bring the decision-home table in line with main: register the number row, drop the row and the sites the merged check moves removed by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5467
• Record the null a reference keeps as one site fact that the nullability decisions read, instead of five markers by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5436
• Take the HTTP token, status, media type and charset rules of client and server packages from one runtime module by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5427
• Resolve the class-keyed options through one home of key rules and one name allocation service by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5437
• Decide collapse eligibility and whether later holders follow a parent-collapsed root in one pure core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5448
• Find discriminated union sites with one iterator and keep the tag passes' run state in one tag plan by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5454
• Decide discriminated union tags in the tag plan, with the passes as thin adapters and the backend differences as capability rows by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5455
• Answer recursion questions from one reference graph and one module quotient by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5461
• Decide the struct tags of tagged bases in the tag plan and order the bases from the reference graph by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5462
• Decide set-item hashability and dict-key root types in one home over the reference graph by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5463
• Choose the canonical model of a reuse group from one ReuseGroups plan by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5464
• Check the shared schema objects and the model owners from the pytest plugin, and delete the schema graph migration comparisons by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5472
• Decide the constraint applicability of every field form, render drop and literal check in one home by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5473
• Share the operation planning the client and the server compute the same way, with one policy row per difference by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5474

... (truncated)

Changelog

Sourced from datamodel-code-generator's changelog.

0.88.0 - 2026-11-02

Breaking Changes

Code Generation Changes

• Non-object allOf sites now generate the constrained value type instead of an empty model - Without --intersect-allof-keywords, some allOf sites used to be generated as an empty class (class TwoRefsProp(BaseModel): pass, or an empty Struct, dataclass or TypedDict) that rejected every valid value. These are sites whose parts admit no object, for example two integer $refs with a sibling minimum, a $ref to an array schema with minItems, or two string schemas with a pattern each. They are now generated as the intersected value type: a RootModel such as RootModel[conint(ge=3, le=5)] or RootModel[list[str]] for Pydantic v2, and a type alias for dataclasses, msgspec and TypedDict output (for example TwoPatterns: TypeAlias = str). Fields that referenced those classes change with them. Under msgspec or --collapse-root-models, some models are inlined or no longer emitted (for example two_prop: Annotated[int, Meta(ge=4, le=5)]). Merged lookaround patterns add model_config = ConfigDict(regex_engine="python-re") or a from re import compile import, and a nullable site is now typed as a union with None. Code that imports, subclasses or instantiates these former empty classes, or passes dicts to them, must be updated: valid scalar and array values now validate and objects are rejected (#5406)
• Defaults of affected properties follow their new value type with --strip-default-none or --use-default-factory-for-optional-nested-models - A property whose allOf of scalar schemas used to be an empty model now gets the default its value type gets. --use-default-factory-for-optional-nested-models no longer emits a default factory for it, and --strip-default-none keeps the None default only where the type admits null. This can change whether these fields are required and the order of constructor arguments in generated models and dataclasses (#5406)
• Client and server targets keep a schema's own null rejection when it is merged into a nullable model - With --generate-client or --generate-server combined with --reuse-model --collapse-reuse-models, a schema that does not admit null but is merged into an equal nullable model (for example a non-nullable Work collapsed into a nullable Home) no longer takes on the merged model's null. Operations and fields that name it now type their body or result as Home instead of Home | None. Generated client codecs refuse to send or accept None for them, and generated FastAPI servers reject a null request body and answer a bare None result with a 500. Callers or service implementations that passed or returned None there must be updated (#5480)

Error Handling Changes

• Client and view default headers or query that patch a helper-written parameter are now refused - The generated Python client's pagination helpers (iterate, page, next_page), polling helpers (start, resume) and upload helpers (start, resume) used to reject only a call's own extra_headers or extra_query naming a header or query parameter the helper writes. They now also raise ConfigurationError before sending when the client's or a view's (with_options) default_headers or default_query names such a parameter, with a field_path of ("default_headers", name) or ("default_query", name). A client or view set up with such defaults, which used to send these requests, now fails; remove the conflicting default or use a client or view without it for helper calls. A count pagination helper's offset or page position is exempt: a client or view default of it is used as the first position, and only the call's own extra is still refused (#5502)

What's Changed

• Accept an allowlist table whose base is an older release as accepting nothing, and replace the table for 0.87.0 by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5425
• Fit the CI test jobs to the runner concurrency so a run finishes in about five minutes by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5409
• Catch validation-time errors, order-dependent imports and project schemas in the behaviour diff gate by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5403
• Import the builtins that a package's own submodules hide under aliases, so list[str] beside app/list.py names the builtin again by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5402
• Write an allOf whose parts admit no object as the intersection of its parts instead of a model without fields by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5406
• Run the render memo check from a pytest plugin and check the Pydantic config keys in a test by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5433
• Run the fact finality and store write checks from the pytest plugin instead of the package by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5434
• Keep the pass declarations and fact tables in scripts, so the package only runs passes by name by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5443
• Run the model graph and schema location checks from the pytest plugin by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5456
• Run the module import and render plan checks from the pytest plugin by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5457
• Delete the migration comparisons that kept the old computations beside the new ones by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5458
• Keep each decision in one home: a checker that fails on a new site outside its home, and an inventory of the legacy rows by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5422
• Read --intersect-allof-keywords in one place, as four named legacy rows of the intersection core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5423
• Give the client and server decisions their homes in the decision-home checker, so targets cannot re-read the document or re-decide model facts by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5429
• Read every subschema position from one table by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5440
• Let the schema dispatch rows declare the child schemas they type, and split request and response models by asking them by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5441
• Read the object map options in one place, as named legacy rows of the object map home by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5444
• Merge inherited properties in one home of the intersection core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5452
• Build the $ref-sibling and allOf member rows in the intersection core and read the null of intersected parts from the null rule by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5459
• Record a release's behaviour in its own sharded workflow, so the record cannot cancel Publish or skip the release benchmarks by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5466
• Decide the number values each output can write in one place, with one int64 range for msgspec by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5445
• Read and check the keys of an OpenAPI document in one place by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5432
• Bring the decision-home table in line with main: register the number row, drop the row and the sites the merged check moves removed by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5467
• Record the null a reference keeps as one site fact that the nullability decisions read, instead of five markers by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5436
• Take the HTTP token, status, media type and charset rules of client and server packages from one runtime module by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5427
• Resolve the class-keyed options through one home of key rules and one name allocation service by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5437
• Decide collapse eligibility and whether later holders follow a parent-collapsed root in one pure core by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5448
• Find discriminated union sites with one iterator and keep the tag passes' run state in one tag plan by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5454
• Decide discriminated union tags in the tag plan, with the passes as thin adapters and the backend differences as capability rows by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5455
• Answer recursion questions from one reference graph and one module quotient by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5461
• Decide the struct tags of tagged bases in the tag plan and order the bases from the reference graph by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5462
• Decide set-item hashability and dict-key root types in one home over the reference graph by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5463
• Choose the canonical model of a reuse group from one ReuseGroups plan by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5464
• Check the shared schema objects and the model owners from the pytest plugin, and delete the schema graph migration comparisons by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5472
• Decide the constraint applicability of every field form, render drop and literal check in one home by @​koxudaxi in datamodel-code-generator/datamodel-code-generator#5473

... (truncated)

Commits

• 1ebbfc2 Name where the walk finds a declared schema in one place (#5980)
• c17dc43 Assemble the constraints of an object property and a root field, and lay out ...
• 170d961 Spell the recommendation words, select a BaseModel's regex engine, read the i...
• eca0cb4 Tell whether a rewrite changed nothing, pick the compiled renderer, write a p...
• d7410f9 Build the id of a schema's own use, tell whether reuse made a model and name ...
• b538521 Write the array an itemSchema stands for, parse the schema of a media type, r...
• a79a18c Lay out the brackets and nested entries of a literal and map a field's facts ...
• d2f11f0 Pick the field whose default an inherited field override takes, tell which dr...
• cbf45ad Take the arguments of a code formatter from the model settings, check the sch...
• 73e8052 Build the type a Python type expression spells in one place (#5954)
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Superseded by #1027.