Feature: Add Config Option to Enforce Nullable Relationships (#1580)

* feat: add config option for nullable relationships

Introduce enforce_nullable_relationships configuration to control nullable Eloquent relationships.

* refactor: update logic for nullable relationships

Update isRelationNullable method to respect new config option.

* test: add tests for nullable relationship config

- Verify behavior of enforce_nullable_relationships configuration option.
- Create snapshot to reflect enforce_nullable_relationships set to false.

* docs: improve documented context and usage

* docs: update CHANGELOG with enforce_nullable_relationships option

CHANGELOG.md

@@ -39,6 +39,7 @@
 - Drop support for Laravel versions earlier than 11.15.
 
 ### Added
+- Introduce `enforce_nullable_relationships` configuration option to control how nullable Eloquent relationships are enforced during static analysis. This provides flexibility for scenarios where application logic ensures data integrity without relying on database constraints. [#1580 / jeramyhing](https://github.com/barryvdh/laravel-ide-helper/pull/1580)
 
 - Add support for AsCollection::using and AsEnumCollection::of casts [#1577 / uno-sw](https://github.com/barryvdh/laravel-ide-helper/pull/1577)
 

config/ide-helper.php

@@ -299,6 +299,29 @@ return [
     */
     'additional_relation_return_types' => [],
 
+    /*
+    |--------------------------------------------------------------------------
+    | Enforce nullable Eloquent relationships on not null columns
+    |--------------------------------------------------------------------------
+    |
+    | When set to true (default), this option enforces nullable Eloquent relationships.
+    | However, in cases where the application logic ensures the presence of related
+    | records it may be desirable to set this option to false to avoid unwanted null warnings.
+    |
+    | Default: true
+    | A not null column with no foreign key constraint will have a "nullable" relationship.
+    |  * @property int $not_null_column_with_no_foreign_key_constraint
+    |  * @property-read BelongsToVariation|null $notNullColumnWithNoForeignKeyConstraint
+    |
+    | Option: false
+    | A not null column with no foreign key constraint will have a "not nullable" relationship.
+    |  * @property int $not_null_column_with_no_foreign_key_constraint
+    |  * @property-read BelongsToVariation $notNullColumnWithNoForeignKeyConstraint
+    |
+    */
+
+    'enforce_nullable_relationships' => true,
+
     /*
     |--------------------------------------------------------------------------
     | Run artisan commands after migrations to generate model helpers

src/Console/ModelsCommand.php

@@ -836,13 +836,15 @@ class ModelsCommand extends Command
         $fkProp = $reflectionObj->getProperty('foreignKey');
         $fkProp->setAccessible(true);
 
+        $enforceNullableRelation = $this->laravel['config']->get('ide-helper.enforce_nullable_relationships', true);
+
         foreach (Arr::wrap($fkProp->getValue($relationObj)) as $foreignKey) {
             if (isset($this->nullableColumns[$foreignKey])) {
                 return true;
             }
 
             if (!in_array($foreignKey, $this->foreignKeyConstraintsColumns, true)) {
-                return true;
+                return $enforceNullableRelation;
             }
         }
 

tests/Console/ModelsCommand/Relations/Test.php

@@ -46,4 +46,23 @@ class Test extends AbstractModelsCommand
         $this->assertStringContainsString('Written new phpDocBlock to', $tester->getDisplay());
         $this->assertMatchesMockedSnapshot();
     }
+
+    public function testRelationNotNullable(): void
+    {
+        // Disable enforcing nullable relationships
+        Config::set('ide-helper.enforce_nullable_relationships', false);
+
+        $command = $this->app->make(ModelsCommand::class);
+
+        $tester = $this->runCommand($command, [
+            '--write' => true,
+        ]);
+
+        $this->assertSame(0, $tester->getStatusCode());
+        $this->assertStringContainsString('Written new phpDocBlock to', $tester->getDisplay());
+        $this->assertMatchesMockedSnapshot();
+
+        // Re-enable default enforcing nullable relationships
+        Config::set('ide-helper.enforce_nullable_relationships', true);
+    }
 }

tests/Console/ModelsCommand/Relations/__snapshots__/Test__testRelationNotNullable__1.php

@@ -0,0 +1,266 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\Relations\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * 
+ *
+ * @property int $id
+ * @property int $not_null_column_with_foreign_key_constraint
+ * @property int $not_null_column_with_no_foreign_key_constraint
+ * @property int|null $nullable_column_with_foreign_key_constraint
+ * @property int|null $nullable_column_with_no_foreign_key_constraint
+ * @property-read BelongsToVariation $notNullColumnWithForeignKeyConstraint
+ * @property-read BelongsToVariation $notNullColumnWithNoForeignKeyConstraint
+ * @property-read BelongsToVariation|null $nullableColumnWithForeignKeyConstraint
+ * @property-read BelongsToVariation|null $nullableColumnWithNoForeignKeyConstraint
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation query()
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation whereNotNullColumnWithForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation whereNotNullColumnWithNoForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation whereNullableColumnWithForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|BelongsToVariation whereNullableColumnWithNoForeignKeyConstraint($value)
+ * @mixin \Eloquent
+ */
+class BelongsToVariation extends Model
+{
+    public function notNullColumnWithForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(self::class, 'not_null_column_with_foreign_key_constraint');
+    }
+
+    public function notNullColumnWithNoForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(self::class, 'not_null_column_with_no_foreign_key_constraint');
+    }
+
+    public function nullableColumnWithForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(self::class, 'nullable_column_with_foreign_key_constraint');
+    }
+
+    public function nullableColumnWithNoForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(self::class, 'nullable_column_with_no_foreign_key_constraint');
+    }
+}
+<?php
+
+declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\Relations\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * 
+ *
+ * @property int $id
+ * @property int $not_null_column_with_foreign_key_constraint
+ * @property int $not_null_column_with_no_foreign_key_constraint
+ * @property int|null $nullable_column_with_foreign_key_constraint
+ * @property int|null $nullable_column_with_no_foreign_key_constraint
+ * @property-read CompositeBelongsToVariation $bothNonNullableWithForeignKeyConstraint
+ * @property-read CompositeBelongsToVariation $nonNullableMixedWithoutForeignKeyConstraint
+ * @property-read CompositeBelongsToVariation|null $nullableMixedWithForeignKeyConstraint
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation query()
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation whereNotNullColumnWithForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation whereNotNullColumnWithNoForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation whereNullableColumnWithForeignKeyConstraint($value)
+ * @method static \Illuminate\Database\Eloquent\Builder|CompositeBelongsToVariation whereNullableColumnWithNoForeignKeyConstraint($value)
+ * @mixin \Eloquent
+ */
+class CompositeBelongsToVariation extends Model
+{
+    public $table = 'belongs_to_variations';
+
+    public function bothNonNullableWithForeignKeyConstraint(): BelongsTo
+    {
+        // Note, duplicating the keys here for simplicity.
+        return $this->belongsTo(
+            self::class,
+            ['not_null_column_with_foreign_key_constraint', 'not_null_column_with_foreign_key_constraint'],
+            ['not_null_column_with_foreign_key_constraint', 'not_null_column_with_foreign_key_constraint'],
+        );
+    }
+
+    public function nonNullableMixedWithoutForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(
+            self::class,
+            ['not_null_column_with_foreign_key_constraint', 'not_null_column_with_no_foreign_key_constraint'],
+            ['not_null_column_with_foreign_key_constraint', 'not_null_column_with_no_foreign_key_constraint'],
+        );
+    }
+
+    public function nullableMixedWithForeignKeyConstraint(): BelongsTo
+    {
+        return $this->belongsTo(
+            self::class,
+            ['nullable_column_with_no_foreign_key_constraint', 'not_null_column_with_foreign_key_constraint'],
+            ['nullable_column_with_no_foreign_key_constraint', 'not_null_column_with_foreign_key_constraint'],
+        );
+    }
+}
+<?php
+
+declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\Relations\Models;
+
+use Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\Relations\ModelsOtherNamespace\AnotherModel;
+use Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\Relations\Traits\HasTestRelations;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Relations\MorphToMany;
+
+/**
+ * 
+ *
+ * @property int $id
+ * @property-read Simple $relationBelongsTo
+ * @property-read AnotherModel $relationBelongsToInAnotherNamespace
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationBelongsToMany
+ * @property-read int|null $relation_belongs_to_many_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationBelongsToManyWithSub
+ * @property-read int|null $relation_belongs_to_many_with_sub_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationBelongsToManyWithSubAnother
+ * @property-read int|null $relation_belongs_to_many_with_sub_another_count
+ * @property-read AnotherModel $relationBelongsToSameNameAsColumn
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationHasMany
+ * @property-read int|null $relation_has_many_count
+ * @property-read Simple|null $relationHasOne
+ * @property-read Simple $relationHasOneWithDefault
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationMorphMany
+ * @property-read int|null $relation_morph_many_count
+ * @property-read Simple|null $relationMorphOne
+ * @property-read Model|\Eloquent $relationMorphTo
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationMorphedByMany
+ * @property-read int|null $relation_morphed_by_many_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationSampleRelationType
+ * @property-read int|null $relation_sample_relation_type_count
+ * @property-read Model|\Eloquent $relationSampleToAnyMorphedRelationType
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, Simple> $relationSampleToAnyRelationType
+ * @property-read int|null $relation_sample_to_any_relation_type_count
+ * @property-read Simple $relationSampleToBadlyNamedNotManyRelation
+ * @property-read Simple $relationSampleToManyRelationType
+ * @method static \Illuminate\Database\Eloquent\Builder|Simple newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|Simple newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder|Simple query()
+ * @method static \Illuminate\Database\Eloquent\Builder|Simple whereId($value)
+ * @mixin \Eloquent
+ */
+class Simple extends Model
+{
+    use HasTestRelations;
+
+    // Regular relations
+    public function relationHasMany(): HasMany
+    {
+        return $this->hasMany(Simple::class);
+    }
+
+    public function relationHasOne(): HasOne
+    {
+        return $this->hasOne(Simple::class);
+    }
+
+    public function relationHasOneWithDefault(): HasOne
+    {
+        return $this->hasOne(Simple::class)->withDefault();
+    }
+
+    public function relationBelongsTo(): BelongsTo
+    {
+        return $this->belongsTo(Simple::class);
+    }
+
+    public function relationBelongsToMany(): BelongsToMany
+    {
+        return $this->belongsToMany(Simple::class);
+    }
+
+    public function relationBelongsToManyWithSub(): BelongsToMany
+    {
+        return $this->belongsToMany(Simple::class)->where('foo', 'bar');
+    }
+
+    public function relationBelongsToManyWithSubAnother(): BelongsToMany
+    {
+        return $this->relationBelongsToManyWithSub()->where('foo', 'bar');
+    }
+
+    public function relationMorphTo(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function relationMorphOne(): MorphOne
+    {
+        return $this->morphOne(Simple::class, 'relationMorphTo');
+    }
+
+    public function relationMorphMany(): MorphMany
+    {
+        return $this->morphMany(Simple::class, 'relationMorphTo');
+    }
+
+    public function relationMorphedByMany(): MorphToMany
+    {
+        return $this->morphedByMany(Simple::class, 'foo');
+    }
+
+    // Custom relations
+
+    public function relationBelongsToInAnotherNamespace(): BelongsTo
+    {
+        return $this->belongsTo(AnotherModel::class);
+    }
+
+    public function relationBelongsToSameNameAsColumn(): BelongsTo
+    {
+        return $this->belongsTo(AnotherModel::class, __FUNCTION__);
+    }
+
+    public function relationSampleToManyRelationType()
+    {
+        return $this->testToOneRelation(Simple::class);
+    }
+
+    public function relationSampleRelationType()
+    {
+        return $this->testToManyRelation(Simple::class);
+    }
+
+    public function relationSampleToAnyRelationType()
+    {
+        return $this->testToAnyRelation(Simple::class);
+    }
+
+    public function relationSampleToAnyMorphedRelationType()
+    {
+        return $this->testToAnyMorphedRelation(Simple::class);
+    }
+
+    public function relationSampleToBadlyNamedNotManyRelation()
+    {
+        return $this->testToBadlyNamedNotManyRelation(Simple::class);
+    }
+}