Я пытаюсь выполнить следующую миграцию:
public function up() { Schema::create('lifestyle_questions', function(Blueprint $table) { $table->increments('id'); $table->string('question'); $table->timestamps(); }); Schema::create('lifestyle_question_answers', function(Blueprint $table) { $table->increments('id'); $table->integer('lifestyle_question_id')->unsigned(); $table->foreign('lifestyle_question_id')->references('id')->on('lifestyle_questions'); $table->string('answer'); $table->timestamps(); }); Schema::create('user_lifestyle_question_answers', function(Blueprint $table) { $table->integer('user_id')->unsigned(); $table->foreign('user_id')->references('id')->on('users'); $table->integer('lifestyle_question_answer_id')->unsigned(); $table->foreign('lifestyle_question_answer_id')->references('id')->on('lifestyle_question_answers'); }); } Но я получаю следующую ошибку:
[Illuminate\Database\QueryException] SQLSTATE[42000]: Syntax error or access violation: 1059 Identifier name 'user_lifestyle_question_answers_lifestyle_question_answer_id_foreign' is too long (SQL: alter table `user_lifestyle_question_answers` add constraint user_lifestyle_question_answers_lifestyle_question_answer_id_foreign foreign key (`lifestyle_question_answer_id`) references `lifestyle_question_answers` (`id`)) [PDOException] SQLSTATE[42000]: Syntax error or access violation: 1059 Identifier name 'user_lifestyle_question_answers_lifestyle_question_answer_id_foreign' is too long
Вы можете передать пользовательское имя индекса в качестве второго параметра в метод foreign (). Или просто используйте более короткие имена таблиц / столбцов.
Поэтому вы хотите сделать что-то вроде:
public function up() { Schema::create('lifestyle_questions', function(Blueprint $table) { $table->increments('id'); $table->string('question'); $table->timestamps(); }); Schema::create('lifestyle_question_answers', function(Blueprint $table) { $table->increments('id'); $table->integer('lifestyle_question_id')->unsigned(); $table->foreign('lifestyle_question_id', 'lq_id_foreign')->references('id')->on('lifestyle_questions'); $table->string('answer'); $table->timestamps(); }); Schema::create('user_lifestyle_question_answers', function(Blueprint $table) { $table->integer('user_id')->unsigned(); $table->foreign('user_id')->references('id')->on('users'); $table->integer('lifestyle_question_answer_id')->unsigned(); $table->foreign('lifestyle_question_answer_id', 'lqa_id_foreign')->references('id')->on('lifestyle_question_answers'); }); }