id(); $table->text('answer')->nullable(); $table->unsignedBigInteger('patient_id')->nullable(); $table->foreign('patient_id')->references('id')->on('patients'); $table->unsignedBigInteger('question_category_id')->nullable(); $table->foreign('question_category_id')->references('id')->on('profile_category_question'); $table->unsignedBigInteger('sub_question_id')->nullable(); $table->foreign('sub_question_id')->references('id')->on('profile_sub_questions'); $table->timestamps(); }); } /** * Reverse the migrations. */ public function down(): void { // } };