Fix unnecessary query when accessing a relation on a new ActiveRecord - #21085
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🧰 Additional context used🪛 PHPMD (2.15.0)framework/db/ActiveQuery.php[warning] 84-898: The class ActiveQuery has 14 public methods. Consider refactoring ActiveQuery to keep number of public methods under 10. (undefined) (TooManyPublicMethods) [warning] 84-898: The class ActiveQuery has an overall complexity of 123 which is very high. The configured complexity threshold is 50. (undefined) (ExcessiveClassComplexity) tests/framework/db/ActiveRecordTest.php[warning] 46-2267: The class ActiveRecordTest has 2222 lines of code. Current threshold is 1000. Avoid really long classes. (undefined) (ExcessiveClassLength) [warning] 46-2267: The class ActiveRecordTest has 87 public methods and attributes. Consider reducing the number of public items to less than 45. (undefined) (ExcessivePublicCount) [warning] 46-2267: The class ActiveRecordTest has 80 non-getter- and setter-methods. Consider refactoring ActiveRecordTest to keep number of methods under 25. (undefined) (TooManyMethods) [warning] 46-2267: The class ActiveRecordTest has 80 public methods. Consider refactoring ActiveRecordTest to keep number of public methods under 10. (undefined) (TooManyPublicMethods) [warning] 46-2267: The class ActiveRecordTest has an overall complexity of 115 which is very high. The configured complexity threshold is 50. (undefined) (ExcessiveClassComplexity) [error] 46-2267: The class ActiveRecordTest has a coupling between objects value of 34. Consider to reduce the number of dependencies under 13. (undefined) (CouplingBetweenObjects) [error] 1731-1731: Avoid using static access to class '\yiiunit\data\ar\Order' in method 'testViaRelationWithEmulateExecutionDoesNotQueryDatabase'. (undefined) (StaticAccess) [error] 1732-1732: Avoid using static access to class '\yiiunit\data\ar\OrderItem' in method 'testViaRelationWithEmulateExecutionDoesNotQueryDatabase'. (undefined) (StaticAccess) [error] 1733-1733: Avoid using static access to class '\yiiunit\data\ar\Item' in method 'testViaRelationWithEmulateExecutionDoesNotQueryDatabase'. (undefined) (StaticAccess) [error] 1735-1735: Avoid using static access to class '\yiiunit\data\ar\Order' in method 'testViaRelationWithEmulateExecutionDoesNotQueryDatabase'. (undefined) (StaticAccess) [warning] 1735-1735: Avoid variables with short names like $db. Configured minimum length is 3. (undefined) (ShortVariable) [error] 1742-1742: Avoid using static access to class '\yiiunit\data\ar\Order' in method 'testViaRelationWithEmulateExecutionDoesNotQueryDatabase'. (undefined) (StaticAccess) 📝 SummarySummary by CodeRabbit
WalkthroughChangesRelation Query Guard
Poem
Merge Risk: ⚪ Minimal · up to Lazy relations with unset link attributes now return empty results without issuing unnecessary SQL, with coverage for hasOne, hasMany, and emulated via relations. No concrete merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #21085 +/- ##
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Coverage 80.69% 80.70%
- Complexity 11552 11556 +4
=========================================
Files 374 374
Lines 30280 30290 +10
=========================================
+ Hits 24435 24445 +10
Misses 5845 5845 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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Inline comments:
In `@framework/db/ActiveQuery.php`:
- Line 149: Update ActiveQuery::all() and ActiveQuery::one() to return their
empty no-query results before createCommand() when emulateExecution is already
enabled; retain the later guard for emulation enabled during relation
preparation, and add regressions covering both all() and one() through via
relations.
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📒 Files selected for processing (2)
framework/db/ActiveQuery.phptests/framework/db/ActiveRecordTest.php
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🧰 Additional context used
🪛 PHPMD (2.15.0)
tests/framework/db/ActiveRecordTest.php
[warning] 46-2230: The class ActiveRecordTest has 2185 lines of code. Current threshold is 1000. Avoid really long classes. (undefined)
(ExcessiveClassLength)
[warning] 46-2230: The class ActiveRecordTest has 86 public methods and attributes. Consider reducing the number of public items to less than 45. (undefined)
(ExcessivePublicCount)
[warning] 46-2230: The class ActiveRecordTest has 79 non-getter- and setter-methods. Consider refactoring ActiveRecordTest to keep number of methods under 25. (undefined)
(TooManyMethods)
[warning] 46-2230: The class ActiveRecordTest has 79 public methods. Consider refactoring ActiveRecordTest to keep number of public methods under 10. (undefined)
(TooManyPublicMethods)
[warning] 46-2230: The class ActiveRecordTest has an overall complexity of 114 which is very high. The configured complexity threshold is 50. (undefined)
(ExcessiveClassComplexity)
[error] 46-2230: The class ActiveRecordTest has a coupling between objects value of 34. Consider to reduce the number of dependencies under 13. (undefined)
(CouplingBetweenObjects)
[error] 1694-1694: Avoid using static access to class '\yiiunit\data\ar\Customer' in method 'testLazyRelationOnNewRecordDoesNotQueryDatabase'. (undefined)
(StaticAccess)
[error] 1695-1695: Avoid using static access to class '\yiiunit\data\ar\Order' in method 'testLazyRelationOnNewRecordDoesNotQueryDatabase'. (undefined)
(StaticAccess)
[error] 1696-1696: Avoid using static access to class '\yiiunit\data\ar\Profile' in method 'testLazyRelationOnNewRecordDoesNotQueryDatabase'. (undefined)
(StaticAccess)
[error] 1698-1698: Avoid using static access to class '\yiiunit\data\ar\Customer' in method 'testLazyRelationOnNewRecordDoesNotQueryDatabase'. (undefined)
(StaticAccess)
[warning] 1698-1698: Avoid variables with short names like $db. Configured minimum length is 3. (undefined)
(ShortVariable)
framework/db/ActiveQuery.php
[warning] 84-886: The class ActiveQuery has 14 public methods. Consider refactoring ActiveQuery to keep number of public methods under 10. (undefined)
(TooManyPublicMethods)
[warning] 84-886: The class ActiveQuery has an overall complexity of 121 which is very high. The configured complexity threshold is 50. (undefined)
(ExcessiveClassComplexity)
🔇 Additional comments (1)
tests/framework/db/ActiveRecordTest.php (1)
1685-1719: LGTM!
1 participant
Fixes #21077.
Accessing a lazily-loaded relation (
hasOne/hasMany) on a model whose linkattribute(s) are not set — e.g. a new, unsaved record — can never match a row.
Yii already has a mechanism for this:
Query::$emulateExecution, which short-circuitsall()/one()before touching the database.For eager loading (
with()), this already works correctly, becauseActiveRelationTrait::populateRelation()callsfilterByModels()(which sets the flag)before calling
all()/one().For lazy loading (
$model->relationName), it didn't:ActiveQuery::all()/one()checkedemulateExecutionbeforecreateCommand()ran — but the flag is only set insideprepare(), whichcreateCommand()triggers. So the check always saw the flag stillfalse, and aWHERE (0=1)query was sent anyway.The fix builds the command first (safe — no DB call happens until
queryAll()/queryOne()is actually invoked), then checks the flag, so the determination made during
prepare()is honored before the database is hit. Scoped to
ActiveQueryonly; the baseQueryclass and its documented
emulateExecution()contract for non-AR queries are untouched.Added a regression test (
testLazyRelationOnNewRecordDoesNotQueryDatabase) that asserts,via query-log message count, that no SQL is sent for either a
hasManyorhasOnerelation accessed on an unsaved record. Confirmed the test fails (3 log messages) without
the fix and passes (0) with it. Full
sqliteActiveRecordTestsuite (138 tests) andQueryTestsuite pass with no regressions.