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我有一个有儿童记录的记录。现在,当我尝试删除该记录时,应该说“您不能删除此记录;因为它有一个子记录”。如何做到这一点是laravel 5?例如:如何在删除laravel 5中的父记录时不删除子记录?
例如: 设备记录有一个部门栏,当我尝试删除这个设备记录时,它应该给出一条消息:“这个记录有一个部门,你不能删除它”。
这是我的迁移脚本:
public function up()
{
Schema::create('equipment', function(Blueprint $table){
$table->string('id', 32)->unique()->index();
$table->string('equipment_no',32);
$table->string('organization_id',32)->index();
$table->foreign('organization_id')->references('id')->on('organization')->onDelete('cascade')->onUpdate('cascade');
$table->string('customer_id',32)->index();
$table->foreign('customer_id')->references('id')->on('customer')->onDelete('cascade')->onUpdate('cascade');
$table->string('equipment_type',32);
$table->string('equipment_category_id',32)->index();
$table->foreign('equipment_category_id')->references('id')->on('equipment_category')->onDelete('cascade')->onUpdate('cascade');
$table->string('equipment_model_id',32)->index();
$table->foreign('equipment_model_id')->references('id')->on('equipment_model')->onDelete('cascade')->onUpdate('cascade');
$table->string('equipment_fabricat_id',32)->index();
$table->foreign('equipment_fabricat_id')->references('id')->on('equipment_fabricat')->onDelete('cascade')->onUpdate('cascade');
$table->string('department_id',32)->index();
$table->foreign('department_id')->references('id')->on('department')->onDelete('cascade')->onUpdate('cascade');
$table->text('location');
$table->string('inspection_interval',45);
$table->foreign('added_by')->references('id')->on('user')->onDelete('cascade')->onUpdate('cascade');
$table->SoftDeletes();
$table->timestamps();
});
}
和我灭控制器页面功能:
public function destroy($id)
{
$equipment = Equipment::findOrFail($id);
$equipment->delete();
return Redirect::route($this->route)->with($this->success, trans($this->deletemsg));
}
谁能帮我一下吧?
请显示一些代码 - 您有什么,您错过了什么。 –