Question

对于某些表，我想插入固定数量的包含特定数据的行。

这是我的类别工厂：

$factory->define(Category::class, function (Faker $faker) {
    return [
        [
            'name' => 'Politics',
            'slug' => 'politics',
            'description' => 'To discuss politics'
        ],
        [
            'name' => 'News and Events',
            'slug' => 'news',
            'description' => 'To discuss news and world events'
        ],
        [
            'name' => 'Food and Cooking',
            'slug' => 'cooking',
            'description' => 'To discuss cooking and food'
        ],
        [
            'name' => "Animals and Nature",
            'slug' => 'animals-nature',
            'description' => 'To discuss politics'
        ]
    ];
});

这是播种机：

public function run() {
   factory(App\Category::class, 1)->create();
}

我收到此错误：preg_match() expects parameter 2 to be string, array given

是否可以使用种子和工厂将固定数量的静态信息插入某些表？

Answer 1

我认为您想使用带有静态值的Seeder，如果我正确的话，您应该使用

定义类别播种器

<?php
use Illuminate\Database\Seeder;
use App\Category;

class CategorySeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $categories = [
             [
            'name' => 'Politics',
            'slug' => 'politics',
            'description' => 'To discuss politics'
        ],
        [
            'name' => 'News and Events',
            'slug' => 'news',
            'description' => 'To discuss news and world events'
        ],
        [
            'name' => 'Food and Cooking',
            'slug' => 'cooking',
            'description' => 'To discuss cooking and food'
        ],
        [
            'name' => "Animals and Nature",
            'slug' => 'animals-nature',
            'description' => 'To discuss politics'
        ]
        ];

        foreach ($categories as $category) {
            Category::create($category);
        }
    }
}

在DatabaseSeeder中

<?php

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        $this->call(CategorySeeder::class);
    }
}

现在运行php artisan db:seed，它将完成。

Answer 2

@Prafulla Kumar Sahu 的答案是播种机，但您可以通过以下方式 override your factory 值：

$category = factory(App\Category::class)->make([
                'name' => 'Politics',
                'slug' => 'politics',
                'description' => 'To discuss politics'
            ]);
$category = factory(App\Category::class)->make([
                'name' => 'News and Events',
                'slug' => 'news',
                'description' => 'To discuss news and world events'
            ]);
$category = factory(App\Category::class)->make([
                'name' => 'Food and Cooking',
                'slug' => 'cooking',
                'description' => 'To discuss cooking and food'
            ]);
$category = factory(App\Category::class)->make([
                'name' => "Animals and Nature",
                'slug' => 'animals-nature',
                'description' => 'To discuss politics'
            ]);

Laravel工厂和播种：静态数组数组

2 个答案: