我想为我的外键设置一个自定义名称。我能怎么做 ? 我使用下面的代码,但它让我错误:
SQLSTATE [42000]:语法错误或访问冲突:1072键列 ' parent_section_id'表中不存在(SQL:alter table
sections
添加约束sections_parent_section_id _foreign
外键(parent_section_id
)引用sections
(id
) 删除级联)
我想要的是什么:
id
- title
- parent_section_id
parent_section_id
引用当前的id表
public function up()
{
Schema::create('sections', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->foreign('parent_section_id')->references('id')->on('sections')->onDelete('cascade');
$table->timestamps();
});
}
答案 0 :(得分:2)
试试这个,
public function up()
{
Schema::create('sections', function (Blueprint $table) {
$table->increments('id');
$table->integer('parent_section_id')->unsigned();
$table->string('title');
$table->foreign('parent_section_id')
->references('id')->on('sections')->onDelete('cascade');
$table->timestamps();
});
}