fix(prisma-schema): improve documentation readability

[Hephaest]

Hi team,

I have reviewed the entire Prisma Schema section today, and I have identified a few areas that could be improved.

For more details, please check out my inline comments :)

Summary by CodeRabbit

• Documentation
  • Updated schema documentation examples to reflect required relationship fields in Post and Comment models across relational and MongoDB data models for improved schema consistency.
  • Minor formatting adjustments to index documentation examples.

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[coderabbitai]

Walkthrough

This PR updates documentation for Prisma schema by making relation fields required instead of optional across Post and Comment models in both relational and MongoDB database examples. Additionally, it repositions documentation comments within index directives.

Changes

Cohort / File(s)	Summary
Schema model updates content/200-orm/100-prisma-schema/10-overview/index.mdx, content/200-orm/100-prisma-schema/20-data-model/10-models.mdx	Post and Comment model relations changed from optional to required. author User? becomes author User, and authorId Int? becomes authorId Int in relational examples; similar changes applied to MongoDB examples with String types. Foreign key fields made non-nullable to align with required relations.
Documentation formatting content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx	Two comment lines repositioned within index documentation blocks, moving descriptive text from before to after corresponding index directives without altering semantics.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• Verify consistency: Confirm that all nullable relation fields (both User? and Post?) have been updated to required across both relational and MongoDB contexts
• Cross-reference changes: Ensure the authorId and postId field type changes (Int/String optionality) align with their relation field updates
• Schema semantics: Validate that making these relations required does not conflict with existing documentation context or data model constraints elsewhere in the schema documentation

Pre-merge checks

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title is vague and generic, using the phrase 'improve documentation readability' which doesn't convey the specific nature of the schema changes being made.	Replace with a more specific title that reflects the actual changes, such as 'fix(prisma-schema): make Post and Comment relations required' or 'fix(prisma-schema): update relation optionality in schema documentation'.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 432af39 and 022194b.

📒 Files selected for processing (3)

• content/200-orm/100-prisma-schema/10-overview/index.mdx (2 hunks)
• content/200-orm/100-prisma-schema/20-data-model/10-models.mdx (2 hunks)
• content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx (2 hunks)

🧰 Additional context used

🧠 Learnings (3)

📓 Common learnings

Learnt from: aidankmcalister
Repo: prisma/docs PR: 7157
File: content/800-guides/400-deno-integration.mdx:188-190
Timestamp: 2025-10-03T19:30:57.554Z
Learning: For the prisma/docs repository, do not suggest changes to code blocks when reviewing documentation pull requests.

Learnt from: aidankmcalister
Repo: prisma/docs PR: 7301
File: content/800-guides/410-cloudflare-workers.mdx:87-107
Timestamp: 2025-11-20T21:00:02.587Z
Learning: Do not suggest changes to `prisma.config.ts` files in the prisma/docs repository, as the code examples are intentional for documentation purposes.

Learnt from: aidankmcalister
Repo: prisma/docs PR: 7165
File: content/800-guides/550-test-guide.mdx:85-90
Timestamp: 2025-10-08T16:23:00.388Z
Learning: For .mdx files in the prisma/docs repository: Only flag code snippets for (1) exposed secrets with real-looking values that should be placeholders (e.g., API keys, database passwords, AWS credentials), or (2) blatant syntax errors like missing parentheses, brackets, braces, or mismatched delimiters. Do not flag code quality issues, anti-patterns, security vulnerabilities, missing error handling, unused variables, or any other bad practices, as documentation intentionally shows problematic code.

📚 Learning: 2025-11-20T21:00:02.587Z

Learnt from: aidankmcalister
Repo: prisma/docs PR: 7301
File: content/800-guides/410-cloudflare-workers.mdx:87-107
Timestamp: 2025-11-20T21:00:02.587Z
Learning: Do not suggest changes to `prisma.config.ts` files in the prisma/docs repository, as the code examples are intentional for documentation purposes.

Applied to files:

• content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx

📚 Learning: 2025-10-08T16:23:00.388Z

Learnt from: aidankmcalister
Repo: prisma/docs PR: 7165
File: content/800-guides/550-test-guide.mdx:85-90
Timestamp: 2025-10-08T16:23:00.388Z
Learning: For .mdx files in the prisma/docs repository: Only flag code snippets for (1) exposed secrets with real-looking values that should be placeholders (e.g., API keys, database passwords, AWS credentials), or (2) blatant syntax errors like missing parentheses, brackets, braces, or mismatched delimiters. Do not flag code quality issues, anti-patterns, security vulnerabilities, missing error handling, unused variables, or any other bad practices, as documentation intentionally shows problematic code.

Applied to files:

• content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx

🔇 Additional comments (3)

content/200-orm/100-prisma-schema/20-data-model/10-models.mdx (1)

410-411: Consistent schema updates across examples. ✓

The changes make relation fields required in both relational and MongoDB examples, improving documentation consistency and showing a common, realistic schema pattern. The formatting aligns with Prisma conventions.

Also applies to: 427-431

content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx (1)

207-207: Documentation comment repositioning for clarity. ✓

The inline comment adjustments improve alignment and readability of the example explanations without altering the schema itself.

Also applies to: 345-345

content/200-orm/100-prisma-schema/10-overview/index.mdx (1)

62-63: Consistent relation field updates across examples. ✓

The changes align with the Comment model updates and establish a consistent pattern: required relationships between users and posts. This improves documentation clarity by presenting a cohesive, realistic schema approach across both relational and MongoDB examples.

Also applies to: 100-101

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[Hephaest]

Although both author and authorId can be optional, it is usually necessary for them to be associated with an author.

PS: This change aligns with the order of reading. These two fields are always required in the documentation above.

[Hephaest]

This seems to be a typo. As One-to-many relations states:

The annotated relation field and relation scalar of a 1-n relation can either both be optional, or both be mandatory

[Hephaest]

To make it simple, each comment must be linked to a single post.

[Hephaest]

I accidentally found these comments are misplaced.