无法添加外键约束-Laravel迁移错误

Question

我有多个迁移，但我认为与这个问题相关的两个迁移是“作业”和“会话”迁移。

作业迁移

    Schema::create('job', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->string('name');
        $table->timestamps();
    });

    Schema::create('session', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->unsignedBigInteger('user_id');
        $table->unsignedBigInteger('group_id');
        $table->unsignedBigInteger('job_id');
        $table->boolean('verified')->default(0);
        $table->date('date');
        $table->time('start_time');
        $table->time('end_time');
        $table->string('session_type');
        $table->timestamps();

        $table->foreign('user_id')->references('id')->on('users');
        $table->foreign('group_id')->references('id')->on('group');
        $table->foreign('job_id')->references('id')->on('job');
    });

Answer 1

您必须确保作业迁移在会话迁移之前