修改一下 foreign key

FreedomKnight · FreedomKnight · commit fa5c06134503 · 2018-02-12T16:17:43.000+08:00
diff --git a/database/migrations/0000_00_00_000000_update_taggable_table.php b/database/migrations/0000_00_00_000000_update_taggable_table.php
@@ -18,7 +18,7 @@ public function up()
 
         Schema::connection($connection)->table('taggable_tags', function (Blueprint $table) {
             $table->unsignedInteger('parent_id')->nullable();
-            $table->foreign('parent_id')->references('id')->on('taggable_tags')->onDelete('null');
+            $table->foreign('parent_id')->references('tag_id')->on('taggable_tags')->onDelete('set null');
             $table->index('parent_id');
         });
     }

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,7 @@ public function up()`
`18`	`18`
`19`	`19`	`Schema::connection($connection)->table('taggable_tags', function (Blueprint $table) {`
`20`	`20`	`$table->unsignedInteger('parent_id')->nullable();`
`21`		`- $table->foreign('parent_id')->references('id')->on('taggable_tags')->onDelete('null');`
	`21`	`+ $table->foreign('parent_id')->references('tag_id')->on('taggable_tags')->onDelete('set null');`
`22`	`22`	`$table->index('parent_id');`
`23`	`23`	`});`
`24`	`24`	`}`