[9.x] Improve UUID and ULID support for Eloquent

src/Illuminate/Database/Eloquent/Concerns/HasUlids.php

@@ -49,16 +49,10 @@ public function uniqueIds()
      */
     public function getKeyType()
     {
-        return 'string';
-    }
+        if (in_array($this->getKeyName(), $this->uniqueIds())) {
+            return 'string';
+        }
 
-    /**
-     * Get the value indicating whether the IDs are incrementing.
-     *
-     * @return bool
-     */
-    public function getIncrementing()
-    {
-        return false;
+        return $this->keyType;
     }
 }

src/Illuminate/Database/Eloquent/Concerns/HasUuids.php

@@ -49,16 +49,10 @@ public function uniqueIds()
      */
     public function getKeyType()
     {
-        return 'string';
-    }
+        if (in_array($this->getKeyName(), $this->uniqueIds())) {
+            return 'string';
+        }
 
-    /**
-     * Get the value indicating whether the IDs are incrementing.
-     *
-     * @return bool
-     */
-    public function getIncrementing()
-    {
-        return false;
+        return $this->keyType;
     }
 }

src/Illuminate/Database/Eloquent/Model.php

@@ -1851,6 +1851,10 @@ public function setKeyType($type)
      */
     public function getIncrementing()
     {
+        if ($this->getKeyType() === 'string') {
+            return false;
+        }
+
         return $this->incrementing;
     }
 

src/Illuminate/Database/Schema/Blueprint.php

@@ -1243,7 +1243,7 @@ public function binary($column)
     }
 
     /**
-     * Create a new uuid column on the table.
+     * Create a new UUID column on the table.
      *
      * @param  string  $column
      * @return \Illuminate\Database\Schema\ColumnDefinition
@@ -1267,6 +1267,34 @@ public function foreignUuid($column)
         ]));
     }
 
+    /**
+     * Create a new ULID column on the table.
+     *
+     * @param  string  $column
+     * @param  int|null  $length
+     * @return \Illuminate\Database\Schema\ColumnDefinition
+     */
+    public function ulid($column = 'uuid', $length = 26)
+    {
+        return $this->char($column, $length);
+    }
+
+    /**
+     * Create a new ULID column on the table with a foreign key constraint.
+     *
+     * @param  string  $column
+     * @param  int|null  $length
+     * @return \Illuminate\Database\Schema\ForeignIdColumnDefinition
+     */
+    public function foreignUlid($column, $length = 26)
+    {
+        return $this->addColumnDefinition(new ForeignIdColumnDefinition($this, [
+            'type' => 'char',
+            'name' => $column,
+            'length' => $length,
+        ]));
+    }
+
     /**
      * Create a new IP address column on the table.
      *

tests/Database/DatabaseEloquentModelTest.php

@@ -2214,8 +2214,10 @@ public function testIntKeyTypePreserved()
     public function testStringKeyTypePreserved()
     {
         $model = $this->getMockBuilder(EloquentKeyTypeModelStub::class)->onlyMethods(['newModelQuery', 'updateTimestamps', 'refresh'])->getMock();
+        $model->id = 'string id';
+
         $query = m::mock(Builder::class);
-        $query->shouldReceive('insertGetId')->once()->with([], 'id')->andReturn('string id');
+        $query->shouldReceive('insert')->once()->with(['id' => 'string id']);
         $query->shouldReceive('getConnection')->once();
         $model->expects($this->once())->method('newModelQuery')->willReturn($query);
 

tests/Integration/Database/EloquentUniqueStringPrimaryKeysTest.php

@@ -0,0 +1,129 @@
+<?php
+
+namespace Illuminate\Tests\Integration\Database;
+
+use Illuminate\Database\Eloquent\Concerns\HasUlids;
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Model as Eloquent;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Str;
+
+class EloquentUniqueStringPrimaryKeysTest extends DatabaseTestCase
+{
+    protected function defineDatabaseMigrationsAfterDatabaseRefreshed()
+    {
+        Schema::create('users', function (Blueprint $table) {
+            $table->uuid('id')->primary();
+            $table->uuid('foo');
+            $table->uuid('bar');
+            $table->timestamps();
+        });
+
+        Schema::create('posts', function (Blueprint $table) {
+            $table->ulid('id')->primary();
+            $table->ulid('foo');
+            $table->ulid('bar');
+            $table->timestamps();
+        });
+
+        Schema::create('songs', function (Blueprint $table) {
+            $table->id();
+            $table->uuid('foo');
+            $table->uuid('bar');
+            $table->timestamps();
+        });
+
+        Schema::create('pictures', function (Blueprint $table) {
+            $table->uuid('uuid')->primary();
+            $table->timestamps();
+        });
+    }
+
+    public function testModelWithUuidPrimaryKeyCanBeCreated()
+    {
+        $user = ModelWithUuidPrimaryKey::create();
+
+        $this->assertTrue(Str::isUuid($user->id));
+        $this->assertTrue(Str::isUuid($user->foo));
+        $this->assertTrue(Str::isUuid($user->bar));
+    }
+
+    public function testModelWithUlidPrimaryKeyCanBeCreated()
+    {
+        $user = ModelWithUlidPrimaryKey::create();
+
+        $this->assertTrue(Str::isUlid($user->id));
+        $this->assertTrue(Str::isUlid($user->foo));
+        $this->assertTrue(Str::isUlid($user->bar));
+    }
+
+    public function testModelWithoutUuidPrimaryKeyCanBeCreated()
+    {
+        $user = ModelWithoutUuidPrimaryKey::create();
+
+        $this->assertTrue(is_int($user->id));
+        $this->assertTrue(Str::isUuid($user->foo));
+        $this->assertTrue(Str::isUuid($user->bar));
+    }
+
+    public function testModelWithCustomUuidPrimaryKeyNameCanBeCreated()
+    {
+        $user = ModelWithCustomUuidPrimaryKeyName::create();
+
+        $this->assertTrue(Str::isUuid($user->uuid));
+    }
+}
+
+class ModelWithUuidPrimaryKey extends Eloquent
+{
+    use HasUuids;
+
+    protected $table = 'users';
+
+    protected $guarded = [];
+
+    public function uniqueIds()
+    {
+        return [$this->getKeyName(), 'foo', 'bar'];
+    }
+}
+
+class ModelWithUlidPrimaryKey extends Eloquent
+{
+    use HasUlids;
+
+    protected $table = 'posts';
+
+    protected $guarded = [];
+
+    public function uniqueIds()
+    {
+        return [$this->getKeyName(), 'foo', 'bar'];
+    }
+}
+
+class ModelWithoutUuidPrimaryKey extends Eloquent
+{
+    use HasUuids;
+
+    protected $table = 'songs';
+
+    protected $guarded = [];
+
+    public function uniqueIds()
+    {
+        return ['foo', 'bar'];
+    }
+}
+
+class ModelWithCustomUuidPrimaryKeyName extends Eloquent
+{
+    use HasUuids;
+
+    protected $table = 'pictures';
+
+    protected $guarded = [];
+
+    protected $primaryKey = 'uuid';
+}