fix: foreign key constraint ambiguity in generated delegate prisma schema

[ymc9]

Summary by CodeRabbit

• New Features
  • Introduced a new argument for foreign key constraint disambiguation in schema generation, enhancing model relationship clarity.
• Tests
  • Added regression tests to ensure accurate handling of foreign key constraints across various database models.

[coderabbitai]

Walkthrough

Walkthrough

This update introduces a new feature to address foreign key constraint ambiguity in database schemas with polymorphic relationships. By adding a map argument to the PrismaSchemaGenerator class, it enables explicit naming for foreign key constraints, enhancing schema clarity and avoiding errors during generation. Accompanying regression tests ensure the robustness of this solution against a variety of database models.

Changes

Files	Change Summary
packages/.../schema-generator.ts	Added map argument for FK constraint disambiguation in schema generator
tests/integration/.../regressions.test.ts	Introduced regression tests for FK constraint ambiguity resolution

Related issues

• Error when generating from schema with polymorphic models - given constraint name ... has to be unique in the following namespace... #1058: This issue outlines problems with unique constraint names in polymorphic models, which the map argument addition directly addresses by allowing custom names for constraints, potentially resolving the reported error.

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

Share

• X
• Mastodon
• Reddit
• LinkedIn

---

Tips

Chat

There are 3 ways to chat with CodeRabbit:

Note: Auto-reply has been disabled for this repository by the repository owner. The CodeRabbit bot will not respond to your comments unless it is explicitly tagged.

• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit tests for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai generate interesting stats about this repository from git and render them as a table.
  • @coderabbitai show all the console.log statements in this repository.
  • @coderabbitai read src/utils.ts and generate unit tests.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (invoked as PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger a review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai help to get help.

Additionally, you can add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.

CodeRabbit Configration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• The JSON schema for the configuration file is available here.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/coderabbit-overrides.v2.json

CodeRabbit Discord Community

Join our Discord Community to get help, request features, and share feedback.

[coderabbitai]

Review Status

Actionable comments generated: 0

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 6edfd66 and 9cba6f7.

Files selected for processing (2)

• packages/schema/src/plugins/prisma/schema-generator.ts (1 hunks)
• tests/integration/tests/enhancements/with-delegate/regressions.test.ts (1 hunks)

Additional comments: 2

tests/integration/tests/enhancements/with-delegate/regressions.test.ts (1)

• 1-53: The test case for FK Constraint Ambiguity is well-structured and covers the scenario described in the PR objectives. It correctly defines a Prisma schema with models that could lead to foreign key constraint ambiguity and uses the loadSchema function to validate the schema. This ensures that the enhancements made to the PrismaSchemaGenerator class are effectively tested against the issue of FK constraint ambiguity.

However, it's important to ensure that the test case not only validates the schema loading without errors but also explicitly checks that the foreign key constraints are resolved as expected. Consider adding assertions to verify the correctness of the generated schema, especially focusing on the foreign key constraints.

Additionally, the test case currently sets pushDb: false and provider: 'postgresql' in the loadSchema call. While this is appropriate for schema validation, ensure that the choice of database provider aligns with the intended testing environments and that any provider-specific behavior is accounted for in the test case.

Overall, the test case is a valuable addition to the test suite, enhancing the coverage for foreign key constraint ambiguity handling. Just ensure to extend it with explicit assertions if needed to fully validate the enhancements.

packages/schema/src/plugins/prisma/schema-generator.ts (1)

• 459-463: The addition of the map argument for foreign key constraint disambiguation in the PrismaSchemaGenerator class is a well-targeted enhancement to address the issue of foreign key constraint ambiguity. This change allows for more precise control over the selection of foreign key constraints in scenarios where ambiguity could arise, thereby improving the accuracy of the generated schema.

The implementation correctly adds the map argument to the @relation attribute for auxiliary opposite relation fields, using a naming convention that combines the relation field name with a _fk suffix to denote the foreign key. This approach is logical and helps ensure that the generated schema accurately reflects the intended database structure and relationships.

However, it's important to consider the potential for naming conflicts or inconsistencies that could arise from the use of this naming convention, especially in complex schemas with multiple levels of inheritance or polymorphism. Ensure that the naming convention for the map argument is robust enough to handle such scenarios without leading to duplicate or ambiguous foreign key names.

Additionally, consider documenting the naming convention and the rationale behind the use of the map argument in the code comments or project documentation. This will help future maintainers and users of the PrismaSchemaGenerator class understand the purpose and usage of this enhancement.

Overall, the addition of the map argument is a valuable improvement to the PrismaSchemaGenerator class, effectively addressing the issue of foreign key constraint ambiguity. Just ensure to address the considerations regarding naming conventions and documentation to enhance the maintainability and usability of this enhancement.