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Graph/cluster-19

ClusterConcept

Serialization Schema Mismatch

cluster-19

Default model/field semantics and selection defaults leak into serialization or runtime behavior, producing unexpected schemas or multi-target operations—e.g., nested models becoming unnested, null-handling exclusions applying globally, and selection state sticking across operators.

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Updated6/26/2026

PageRank0.0002

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34 linked nodes

INSTANCE_OFProblem

I can only outline all or none. — highlight the currently selected model through the postprocessing EffectComposer. Tension: that seems not to work since I load my models through mapping the array I add them to. Outcome: Can somebody help me selecting only one model out of my model imports?

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when I try to insert an e-mail that does not match the pattern it still does get inserted into the database — I'm currently working on an api using fastapi and sqlmodel. Tension: I've read in some github issues that the regex parameter is not working properlly with pydantic. Outcome: You need instead to use a Pydantic-native validation method.

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I have an endpoint that takes a Pydantic model, `Foo`, as a query parameter. Outcome: parsing fails even without nesting.

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Normally, the response looks like this: — I have a model, called Candidate that I'm trying to return, two of the fields refer to another model, StaffMember. Tension: However, I don't want any nested fields.

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Pydantic ValidationError loc includes the discriminated union discriminator value

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Pydantic can't construct infinitely recursive models. Tension: the data you receive would have to be infinitely recursive.

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When I use `author_id: int | None`, I get an error saying that a required field is missing. — requesting an endpoint that accepts the above model as its JSON body. Tension: The annotations don't actually do anything by themselves. Outcome: the model works as expected without errors.

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FastAPI cannot choose the correct model for a Union request body when one variant has an enum field

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The `exclude_none` parameter to `model.model_dump` would apply to all entries of response, so it is not suitable. — Response is serialized/dumped as a JSON. Tension: I want attr2 to be included only if it is non-null. Importantly, `stuff1` should be included regardless of its type (null or int). Outcome: Pydantic v2 has custom serialization which allows one to control how objects are converted to JSON, but I am using 1.10.

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In a FastAPI endpoint that accepts a Pydantic model, the caller can supply all model fields (including `id`), but the user wants to allow only `name` to be provided while keeping `id` server-generated. Attempting to use `Body(include=['id'])`/type-level inclusion breaks FastAPI/Pydantic validation and error handling behavior.

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the property "$schema" is missing — the file that I see in the workflow you shared. Tension: it is replaced by an empty string "" which is treated as a valid JSON property key but a key that is not allowed by SARIF. Outcome: it is referred to as `additional property`.

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Some part of my code inserts a class Entity into DB, where column partitions has type JsonB — when I try to insert `Entity` to db using npgsql.

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"personal_details_id_no" in my "owner" tables with the @ManyToOne annotations are always null — when I execute my "saveData" runner function. Tension: the @OneToOne field (i.e. address_id_no) in PersonalDetail table is filled properly and doesn't give any issues. Outcome: the issue remains.

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I would like a person to be able to be both a PersonExtra and a PersonBasic at the same time. Tension: it seems like a person can only have one unique type.

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I get a duplicate ID error — If I create a Person first and then try to create a PersonExtra with an existing Person's ID. Tension: it tries to persist both Person and PersonExtra.

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deserializing the whole thing would be a waste of time and memory — handling large JSON payloads. Tension: only care about a small subset of their properties. Outcome: looking for a more efficient approach that will only work with the attributes that I actually need.

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I want to use this CRUD service when my class is serialized — I have a CRUD service in Spring Boot, and I'm using a custom serializer with a class that extends `JsonSerializer`. Tension: I've tried several approaches without success.

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Either the RfidTag will also get deleted (which I do not want) or I get an error like: org.hibernate.TransientObjectException — If I delete a Person that has an RfidTag. Tension: the assigned RfidTag should not get deleted, it should remain in the database, but the value for person_id should be set to NULL.

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components: constants: BOOK: "book_sample" CAR: "car_test" — How do I create constants in Open Api Yaml? Tension: The following Open API Yaml is not working:. Outcome: you can do something like this for OAS 3.0.x which uses a variation of JSON Schema draft-04.

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I'm trying in a single query to get the avg value of a given field and the average value of the top 5 values of that same field — using django ORM. Tension: I've found two different ways to achieve this in SQL, but I'm having trouble implementing those queries using django ORM.

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AttributeError: module 'rest_framework.serializers' has no attribute 'NullBooleanField'. Tension: from rest_framework.serializers import NullBooleanField.

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If you ware passing empty string then at the end it is string so it will raise ValidationError — using modelserializer so by default it will validate against the type of model field.

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DMCAModel IntegerField ratio is rejected when blank=True, null=True, default=None

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the keys that can show up in the dictionary are limited to a certain set — for the <code>something_dict</code> field I thought it could be a good idea to use <code>serializers.DictField</code>. Tension: I can't.

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exclude certain fields that are not necessary in this case the user's password — to get the information of a user I use a serializer with nested serializers.

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include an additional value in this response for JS to access — Our Django project sends GeoFeatureModelSerializer responses. Tension: we want to include an additional value in this response for JS to access. Outcome: Figured it out.

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Django DetailView slug lookup is case-sensitive, so slug matches fail for differently cased values

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"Cannot unpack non-iterable object" — I'm writing a training Django app where I'm storing info about music albums. Tension: I'm adding a form via which I want to add albums to the database. Outcome: you are trying to pass queryset in as choices, which will not work.

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grouped_answers = defaultdict(lambda: dict(answer=set())). Tension: I have following Model. Outcome: return groupe.

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What is the actual use of Mixins class? I don't really get it. — All the mixins classes like CreateModelmixin, Listmixin, etc features are already available in class-based view like ListCreateApiView. Tension: the mixins classes like CreateModelmixin, Listmixin, etc features are already available in class-based view.

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I have a model that has an ImageField. — I want users to be able to upload multiple images for an object of the model. Tension: not only a single image. Outcome: You cannot store several images in one ImageField.

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all I get is its foreign key id instead. Tension: What am I doing wrong here? Outcome: use SlugRelatedField to do it.

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find duplicates of django model on two fields. Outcome: here's a hint.

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calling `bpy.ops.object.mode_set(mode='EDIT')` while more than one mesh is selected enters multi-object edit mode — In a long-running Blender session (e.g. via the Blender MCP) where multiple asset objects exist in the scene. Outcome: The corruption only surfaces later when the broken asset is rendered.

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