[11.x] Introduce method Blueprint::rawColumn() (#53496)

* [11.x] Introduce method `Blueprint::custom()`

* Fix test

* Change name to `rawColumn` & parameter to `definition`

* Add support for callback

* Add support for callback

* Revert support for callback

Author: Jacobs63

src/Illuminate/Database/Schema/Blueprint.php

@@ -1614,6 +1614,18 @@ public function rememberToken()
         return $this->string('remember_token', 100)->nullable();
     }
 
+    /**
+     * Create a new custom column on the table.
+     *
+     * @param  string  $column
+     * @param  string  $definition
+     * @return \Illuminate\Database\Schema\ColumnDefinition
+     */
+    public function rawColumn($column, $definition)
+    {
+        return $this->addColumn('raw', $column, compact('definition'));
+    }
+
     /**
      * Add a comment to the table.
      *

src/Illuminate/Database/Schema/Grammars/Grammar.php

@@ -247,6 +247,17 @@ protected function typeVector(Fluent $column)
         throw new RuntimeException('This database driver does not support the vector type.');
     }
 
+    /**
+     * Create the column definition for a raw column type.
+     *
+     * @param  \Illuminate\Support\Fluent  $column
+     * @return string
+     */
+    protected function typeRaw(Fluent $column)
+    {
+        return $column->offsetGet('definition');
+    }
+
     /**
      * Add the column modifiers to the definition.
      *

tests/Database/DatabaseSchemaBlueprintTest.php

@@ -603,6 +603,36 @@ public function testTinyTextNullableColumn()
         ], $blueprint->toSql($connection, new SqlServerGrammar));
     }
 
+    public function testRawColumn()
+    {
+        $base = new Blueprint('posts', function ($table) {
+            $table->rawColumn('legacy_boolean', 'INT(1)')->nullable();
+        });
+
+        $connection = m::mock(Connection::class);
+
+        $blueprint = clone $base;
+        $this->assertEquals([
+            'alter table `posts` add `legacy_boolean` INT(1) null',
+        ], $blueprint->toSql($connection, new MySqlGrammar));
+
+        $blueprint = clone $base;
+        $connection->shouldReceive('getServerVersion')->andReturn('3.35');
+        $this->assertEquals([
+            'alter table "posts" add column "legacy_boolean" INT(1)',
+        ], $blueprint->toSql($connection, new SQLiteGrammar));
+
+        $blueprint = clone $base;
+        $this->assertEquals([
+            'alter table "posts" add column "legacy_boolean" INT(1) null',
+        ], $blueprint->toSql($connection, new PostgresGrammar));
+
+        $blueprint = clone $base;
+        $this->assertEquals([
+            'alter table "posts" add "legacy_boolean" INT(1) null',
+        ], $blueprint->toSql($connection, new SqlServerGrammar));
+    }
+
     public function testTableComment()
     {
         $base = new Blueprint('posts', function (Blueprint $table) {