详细Laravel5.5执行表迁移命令出现表为空的解决方案


            今天在使用一个第三方包 laravel-admin 时，出现了这样的错误：SQLSTATE[42000]: Syntax error or access violation: 1103 Incorrect table name '',折腾了好久，终于知道了解决方法，原来是配置文件的缓存没有清理。



一、问题







vagrant@homestead:~/Code/laravel-shop$ php artisan admin:install



错误提示：



In Connection.php line 664:

  SQLSTATE[42000]: Syntax error or access violation: 1103 Incorrect table name '' (SQL: create table `` (`id` int uns

  igned not null auto_increment primary key, `username` varchar(190) not null, `password` varchar(60) not null, `name

  ` varchar(255) not null, `avatar` varchar(255) null, `remember_token` varchar(100) null, `created_at` timestamp nul

  l, `updated_at` timestamp null) default character set utf8mb4 collate utf8mb4_unicode_ci)



In Connection.php line 452:

  SQLSTATE[42000]: Syntax error or access violation: 1103 Incorrect table name ''





二、解决方案



database/migrations/2016_01_04_173148_create_admin_table.php





<?php



use Illuminate\Database\Migrations\Migration;

use Illuminate\Database\Schema\Blueprint;



class CreateAdminTable extends Migration

{

  /**

   * Run the migrations.

   *

   * @return void

   */

  public function up()

  {

    $connection = config('admin.database.connection') ?: config('database.default');



    // dd(app('config'));

    Schema::connection($connection)->create(config('admin.database.users_table'), function (Blueprint $table) {

      $table->increments('id');

      $table->string('username', 190)->unique();

      $table->string('password', 60);

      $table->string('name');

      $table->string('avatar')->nullable();

      $table->string('remember_token', 100)->nullable();

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.roles_table'), function (Blueprint $table) {

      $table->increments('id');

      $table->string('name', 50)->unique();

      $table->string('slug', 50);

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.permissions_table'), function (Blueprint $table) {

      $table->increments('id');

      $table->string('name', 50)->unique();

      $table->string('slug', 50);

      $table->string('http_method')->nullable();

      $table->text('http_path')->nullable();

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.menu_table'), function (Blueprint $table) {

      $table->increments('id');

      $table->integer('parent_id')->default(0);

      $table->integer('order')->default(0);

      $table->string('title', 50);

      $table->string('icon', 50);

      $table->string('uri', 50)->nullable();



      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.role_users_table'), function (Blueprint $table) {

      $table->integer('role_id');

      $table->integer('user_id');

      $table->index(['role_id', 'user_id']);

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.role_permissions_table'), function (Blueprint $table) {

      $table->integer('role_id');

      $table->integer('permission_id');

      $table->index(['role_id', 'permission_id']);

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.user_permissions_table'), function (Blueprint $table) {

      $table->integer('user_id');

      $table->integer('permission_id');

      $table->index(['user_id', 'permission_id']);

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.role_menu_table'), function (Blueprint $table) {

      $table->integer('role_id');

      $table->integer('menu_id');

      $table->index(['role_id', 'menu_id']);

      $table->timestamps();

    });



    Schema::connection($connection)->create(config('admin.database.operation_log_table'), function (Blueprint $table) {

      $table->increments('id');

      $table->integer('user_id');

      $table->string('path');

      $table->string('method', 10);

      $table->string('ip', 15);

      $table->text('input');

      $table->index('user_id');

      $table->timestamps();

    });

  }



  /**

   * Reverse the migrations.

   *

   * @return void

   */

  public function down()

  {

    $connection = config('admin.database.connection') ?: config('database.default');



    Schema::connection($connection)->dropIfExists(config('admin.database.users_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.roles_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.permissions_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.menu_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.user_permissions_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.role_users_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.role_permissions_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.role_menu_table'));

    Schema::connection($connection)->dropIfExists(config('admin.database.operation_log_table'));

  }

}







清除配置文件缓存





vagrant@homestead:~/Code/laravel-shop$ php artisan config:cache



再次执行发布命令，就可以了：





vagrant@homestead:~/Code/laravel-shop$ php artisan admin:install

Migrating: 2016_01_04_173148_create_admin_table

Migrated: 2016_01_04_173148_create_admin_table

Admin directory was created: /app/Admin

HomeController file was created: /app/Admin/Controllers/HomeController.php

ExampleController file was created: /app/Admin/Controllers/ExampleController.php

Bootstrap file was created: /app/Admin/bootstrap.php

Routes file was created: /app/Admin/routes.php

vagrant@homestead:~/Code/laravel-shop$



以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持中文源码网。