Laravel5.5执行表迁移命令出现表为空的解决方案

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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(&#39;admin.database.connection&#39;) ?: config(&#39;database.default&#39;);

       // dd(app(&#39;config&#39;));
        Schema::connection($connection)->create(config(&#39;admin.database.users_table&#39;), function (Blueprint $table) {
            $table->increments(&#39;id&#39;);
            $table->string(&#39;username&#39;, 190)->unique();
            $table->string(&#39;password&#39;, 60);
            $table->string(&#39;name&#39;);
            $table->string(&#39;avatar&#39;)->nullable();
            $table->string(&#39;remember_token&#39;, 100)->nullable();
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.roles_table&#39;), function (Blueprint $table) {
            $table->increments(&#39;id&#39;);
            $table->string(&#39;name&#39;, 50)->unique();
            $table->string(&#39;slug&#39;, 50);
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.permissions_table&#39;), function (Blueprint $table) {
            $table->increments(&#39;id&#39;);
            $table->string(&#39;name&#39;, 50)->unique();
            $table->string(&#39;slug&#39;, 50);
            $table->string(&#39;http_method&#39;)->nullable();
            $table->text(&#39;http_path&#39;)->nullable();
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.menu_table&#39;), function (Blueprint $table) {
            $table->increments(&#39;id&#39;);
            $table->integer(&#39;parent_id&#39;)->default(0);
            $table->integer(&#39;order&#39;)->default(0);
            $table->string(&#39;title&#39;, 50);
            $table->string(&#39;icon&#39;, 50);
            $table->string(&#39;uri&#39;, 50)->nullable();

            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.role_users_table&#39;), function (Blueprint $table) {
            $table->integer(&#39;role_id&#39;);
            $table->integer(&#39;user_id&#39;);
            $table->index([&#39;role_id&#39;, &#39;user_id&#39;]);
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.role_permissions_table&#39;), function (Blueprint $table) {
            $table->integer(&#39;role_id&#39;);
            $table->integer(&#39;permission_id&#39;);
            $table->index([&#39;role_id&#39;, &#39;permission_id&#39;]);
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.user_permissions_table&#39;), function (Blueprint $table) {
            $table->integer(&#39;user_id&#39;);
            $table->integer(&#39;permission_id&#39;);
            $table->index([&#39;user_id&#39;, &#39;permission_id&#39;]);
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.role_menu_table&#39;), function (Blueprint $table) {
            $table->integer(&#39;role_id&#39;);
            $table->integer(&#39;menu_id&#39;);
            $table->index([&#39;role_id&#39;, &#39;menu_id&#39;]);
            $table->timestamps();
        });

        Schema::connection($connection)->create(config(&#39;admin.database.operation_log_table&#39;), function (Blueprint $table) {
            $table->increments(&#39;id&#39;);
            $table->integer(&#39;user_id&#39;);
            $table->string(&#39;path&#39;);
            $table->string(&#39;method&#39;, 10);
            $table->string(&#39;ip&#39;, 15);
            $table->text(&#39;input&#39;);
            $table->index(&#39;user_id&#39;);
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        $connection = config(&#39;admin.database.connection&#39;) ?: config(&#39;database.default&#39;);

        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.users_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.roles_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.permissions_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.menu_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.user_permissions_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.role_users_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.role_permissions_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.role_menu_table&#39;));
        Schema::connection($connection)->dropIfExists(config(&#39;admin.database.operation_log_table&#39;));
    }
}

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$

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