docs: enhance README.md with database setup instructions and migration details for single and multiple trees.
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…ion details for single and multiple trees.
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WalkthroughThe README.md was updated to include a new "Database setup" section that explains how to use migration files for setting up the database schema for the nested sets behavior package. It provides migration instructions, example commands, and detailed table schemas. The previous manual SQL schema section was removed. Additionally, two migration files were enhanced to include MySQL-specific table options and simplified the Changes
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🧹 Nitpick comments (5)
README.md (5)
67-70: Clarify that the stock migrations are optional examples, not prescriptive
NestedSetsBehaviordoes not rely on any database-level constraints; therefore the provided migrations are merely starting points. Stating this up-front helps avoid the impression that consumers must adopt the exact table names/columns. A short sentence such as “Feel free to adapt or replace these migrations to match your own schema” would align with the project philosophy noted in previous PRs.
75-77: Explain the naming convention for migration timestampsThe class names
m250707_103609_tree/m250707_104009_multiple_treeinclude a hard-coded timestamp (250707_…). Clarifying that users should not rename these files or, if they do, must update the class name accordingly will avert Yii2 runtime errors (UnknownClassException).
115-129: Add non-interactive flag for CI/automation examplesMany teams run migrations in CI pipelines. Including
--interactive=0in at least one example (./yii migrate/up --interactive=0 …) demonstrates a best practice and prevents jobs from hanging on confirmation prompts.
137-150: UseVARCHARinstead ofTEXTfor thenamecolumn
TEXTis overkill for most category names, cannot be indexed without length constraints and has higher storage overhead. For portability across MySQL, PostgreSQL and SQLite,VARCHAR(255)(or a configurable length) is a safer default.- `name` text NOT NULL, + `name` varchar(255) NOT NULL,
157-170: Consider including engine & charset for MySQL usersExplicitly specifying
ENGINE=InnoDB DEFAULT CHARSET=utf8mb4avoids accidental creation of MyISAM tables on older installations and ensures proper Unicode support.) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;Adding a footnote that other RDBMSes should adjust accordingly keeps the docs vendor-neutral.
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README.md(1 hunks)
🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#13
File: src/NestedSetsBehavior.php:145-145
Timestamp: 2025-06-29T11:22:41.889Z
Learning: The user terabytesoftw prefers to keep PRs focused and small, implementing enhancements in separate dedicated PRs rather than bundling multiple changes together.
README.md (1)
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
…e_tree` migrations; add `MySQL` table options.
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README.md(1 hunks)migrations/m250707_103609_tree.php(1 hunks)migrations/m250707_104009_multiple_tree.php(1 hunks)
🧰 Additional context used
🧠 Learnings (4)
📓 Common learnings
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#13
File: src/NestedSetsBehavior.php:145-145
Timestamp: 2025-06-29T11:22:41.889Z
Learning: The user terabytesoftw prefers to keep PRs focused and small, implementing enhancements in separate dedicated PRs rather than bundling multiple changes together.
migrations/m250707_103609_tree.php (1)
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
README.md (1)
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
migrations/m250707_104009_multiple_tree.php (1)
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
🪛 GitHub Actions: mutation test
migrations/m250707_103609_tree.php
[error] 18-18: Migration 'up' failed with code 1 due to SQL error: 'unknown table option: Array' when creating table 'tree'.
🪛 GitHub Actions: build-pgsql
migrations/m250707_103609_tree.php
[error] 18-18: Migration 'up' failed with code 1 due to SQL syntax error: 'syntax error at or near "Array"' in CREATE TABLE statement. Likely caused by incorrect table schema definition.
[error] 18-18: Migration 'up' failed with code 1 due to 'Array to string conversion' error in yii\db\QueryBuilder.php at line 728. This indicates an invalid data structure passed to createTable method.
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🔇 Additional comments (6)
migrations/m250707_104009_multiple_tree.php (2)
13-15: LGTM: Proper MySQL-specific table options implementationThe conditional MySQL table options are correctly implemented to ensure optimal database configuration.
22-22: LGTM: Standardized column definitionThe
namecolumn is now consistently defined asstring(255)->notNull()regardless of database driver, which simplifies maintenance and ensures consistency.migrations/m250707_103609_tree.php (1)
22-22: LGTM: Standardized column definitionThe
namecolumn standardization tostring(255)->notNull()is consistent with the companion migration file.README.md (3)
67-172: Excellent documentation enhancement!The new "Database setup" section provides comprehensive, clear instructions for using the package migrations. The two-method approach (configuration vs direct parameter) gives users flexibility, and the detailed table schemas help users understand the database structure.
The documentation aligns well with the migration files and replaces the previous manual SQL approach with a more maintainable migration-based setup.
84-103: Well-structured migration configuration exampleThe console application configuration example clearly demonstrates how to include extension migrations alongside application migrations, following Yii2 best practices.
137-171: Accurate table schema documentationThe provided SQL schemas accurately reflect the migration file implementations and help users understand the database structure for both single and multiple tree configurations.
…and `multiple_tree` migrations.
…del and migration setup instructions.
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🧹 Nitpick comments (2)
README.md (2)
78-83: Depth values in the example tree are off by 1According to the nested-sets rules, each level increments
depthby one:
Mobile Phones(child of root) → depth = 1 ← ✅Smartphones(grand-child) → depth = 2 ← ❌ currently shown as 1iPhone(great-grand-child) → depth = 3 ← ❌ currently shown as 2This small mismatch can confuse readers who copy the numbers to verify their own data.
-Mobile Phones (2,7,1) -│ └── Smartphones (3,6,1) -│ └── iPhone (4,5,2) +Mobile Phones (2,7,1) +│ └── Smartphones (3,6,2) +│ └── iPhone (4,5,3)
135-170: Consider using database-agnostic column types in the showcased SQLThe README targets multiple RDBMSs, yet the samples use MySQL-flavoured syntax (
INT(11), back-tick quoting). Switching to ANSI-SQL types (e.g.INTEGER,VARCHAR(255)without length for Sqlite,BIGINTfor large trees) or adding a one-liner caveat (“syntax shown for MySQL; adjust for your DB”) would avoid copy-paste errors for PostgreSQL/SQL Server users.No code change required—just a doc tweak.
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🧰 Additional context used
🧠 Learnings (2)
📓 Common learnings
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#13
File: src/NestedSetsBehavior.php:145-145
Timestamp: 2025-06-29T11:22:41.889Z
Learning: The user terabytesoftw prefers to keep PRs focused and small, implementing enhancements in separate dedicated PRs rather than bundling multiple changes together.
README.md (1)
Learnt from: terabytesoftw
PR: yii2-extensions/nested-sets-behavior#66
File: migrations/m250707_103609_tree.php:0-0
Timestamp: 2025-07-07T12:38:55.434Z
Learning: In the yii2-extensions/nested-sets-behavior project, terabytesoftw prefers application-level validation through the NestedSetsBehavior class rather than database-level constraints for nested set integrity. The migrations are meant to be flexible examples since developers may create their own tables.
…migrations to use standard data types and indexing.
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Pull Request Overview
This PR enhances database migration scripts to standardize column definitions and adds MySQL-specific table options, and updates the README with detailed database setup instructions, migration commands, and SQL schemas for both single- and multiple-tree structures.
- Unified the
namecolumn toVARCHAR(255)and introduced$tableOptionsfor MySQL in both migrations - Added a comprehensive "Database setup" section in the README with example commands and SQL
- Removed the old manual "Database schema" section and replaced it with migration-focused guidance
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| migrations/m250707_104009_multiple_tree.php | Add MySQL table options and unify name column; create multiple_tree table |
| migrations/m250707_103609_tree.php | Add MySQL table options and unify name column; create tree table |
| README.md | Add detailed DB setup instructions, example migrations, and SQL schemas |
Comments suppressed due to low confidence (1)
README.md:164
- The README's SQL schema lists additional indexes (e.g., on
lft,rgt,depth, and composite). Ensure the migration scripts and documentation are consistent by either updating the README or adding those indexes in the migrations.
CREATE INDEX idx_multiple_tree_tree ON multiple_tree (tree);
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