[5.6] Add dropMorphs to Blueprint

src/Illuminate/Database/Schema/Blueprint.php

@@ -407,6 +407,22 @@ public function dropRememberToken()
         $this->dropColumn('remember_token');
     }
 
+    /**
+     * Indicate that the polymorphic columns should be dropped.
+     *
+     * @param  string  $name
+     * @param  string|null  $indexName
+     * @return void
+     */
+    public function dropMorphs($name, $indexName = null)
+    {
+        $indexName = $indexName ?: $this->createIndexName('index', ["{$name}_type", "{$name}_id"]);
+
+        $this->dropIndex($indexName);
+
+        $this->dropColumn("{$name}_type", "{$name}_id");
+    }
+
     /**
      * Rename the table to a given name.
      *

tests/Database/DatabaseMySqlSchemaGrammarTest.php

@@ -258,6 +258,17 @@ public function testDropTimestampsTz()
         $this->assertEquals('alter table `users` drop `created_at`, drop `updated_at`', $statements[0]);
     }
 
+    public function testDropMorphs()
+    {
+        $blueprint = new Blueprint('photos');
+        $blueprint->dropMorphs('imageable');
+        $statements = $blueprint->toSql($this->getConnection(), $this->getGrammar());
+
+        $this->assertCount(2, $statements);
+        $this->assertEquals('alter table `photos` drop index `photos_imageable_type_imageable_id_index`', $statements[0]);
+        $this->assertEquals('alter table `photos` drop `imageable_type`, drop `imageable_id`', $statements[1]);
+    }
+
     public function testRenameTable()
     {
         $blueprint = new Blueprint('users');

tests/Database/DatabasePostgresSchemaGrammarTest.php

@@ -173,6 +173,17 @@ public function testDropTimestampsTz()
         $this->assertEquals('alter table "users" drop column "created_at", drop column "updated_at"', $statements[0]);
     }
 
+    public function testDropMorphs()
+    {
+        $blueprint = new Blueprint('photos');
+        $blueprint->dropMorphs('imageable');
+        $statements = $blueprint->toSql($this->getConnection(), $this->getGrammar());
+
+        $this->assertCount(2, $statements);
+        $this->assertEquals('drop index "photos_imageable_type_imageable_id_index"', $statements[0]);
+        $this->assertEquals('alter table "photos" drop column "imageable_type", drop column "imageable_id"', $statements[1]);
+    }
+
     public function testRenameTable()
     {
         $blueprint = new Blueprint('users');

tests/Database/DatabaseSqlServerSchemaGrammarTest.php

@@ -183,6 +183,17 @@ public function testDropTimestampsTz()
         $this->assertEquals('alter table "users" drop column "created_at", "updated_at"', $statements[0]);
     }
 
+    public function testDropMorphs()
+    {
+        $blueprint = new Blueprint('photos');
+        $blueprint->dropMorphs('imageable');
+        $statements = $blueprint->toSql($this->getConnection(), $this->getGrammar());
+
+        $this->assertCount(2, $statements);
+        $this->assertEquals('drop index "photos_imageable_type_imageable_id_index" on "photos"', $statements[0]);
+        $this->assertEquals('alter table "photos" drop column "imageable_type", "imageable_id"', $statements[1]);
+    }
+
     public function testRenameTable()
     {
         $blueprint = new Blueprint('users');