设置一个小于另一个 faker 字段的 faker 值

Question

您好，我正在为折扣模型创建工厂。我有两个字段（'original_price' 和 'discounted_price'）。我在工厂中使用 randomFloat 为 'original_price' 创建一个带 2 位小数的随机数。如何将 'discounted_price' 设置为始终低于 'original_price' 的值？

目前 'discounted_price' 具有与 'original_price' 相同的 faker 值，因为我找不到这样做的方法。

<?php

namespace Database\Factories;

use App\Models\Category;
use App\Models\User;
use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Discount>
 */
class DiscountFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array<string, mixed>
     */
    public function definition()
    {
        return [
            'user_id' =>User::factory(),
            'category_id' => Category::factory(),
            'title' => $this->faker->sentence(),
            'slug' => $this->faker->slug(),
            'body' => '<p>' . implode('</p><p>', $this->faker->paragraphs(6)) . '</p>',
            'original_price' => $this->faker->randomFloat('2',0,2),
            'discounted_price' => $this->faker->randomFloat('2',0,2),
        ];
    }
}

我想我找到了一个解决方案，但我不知道这是否正确。我的想法是 'discounted_price' 的最小值应该是 'original_price' 的 50%，最大值应该是 'original_price' - 5。这是正确的做法吗？

<?php

    namespace Database\Factories;

    use App\Models\Category;
    use App\Models\User;
    use Illuminate\Database\Eloquent\Factories\Factory;

    /**
     * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Discount>
     */
    class DiscountFactory extends Factory
    {
        /**
         * Define the model's default state.
         *
         * @return array<string, mixed>
         */
        public function definition()
        {
            return [
                'user_id' =>User::factory(),
                'category_id' => Category::factory(),
                'title' => $this->faker->sentence(),
                'slug' => $this->faker->slug(),
                'body' => '<p>' . implode('</p><p>', $this->faker->paragraphs(6)) . '</p>',
                $original_price = 'original_price' => $this->faker->randomFloat('2',0,2),
                'discounted_price' => $this->faker->numberBetween($min=$original_price/2, $max=$original_price-5)
            ];
        }
    }

Answer 1

似乎是对的，我建议您不要在数组值中混用和匹配属性赋值，以保持清晰

        public function definition()
        {
            $originalPrice = $this->faker->randomFloat('2', 0, 2);
            $discountMin = $originalPrice / 2;
            $discountMax = $originalPrice - 5;

            return [
                'user_id' =>User::factory(),
                'category_id' => Category::factory(),
                'title' => $this->faker->sentence(),
                'slug' => $this->faker->slug(),
                'body' => '<p>' . implode('</p><p>', $this->faker->paragraphs(6)) . '</p>',
                'original_price' => $originalPrice,
                'discounted_price' => $this->faker->numberBetween($discountMin, $discountMax)
            ];
        }

设置一个小于另一个 faker 字段的 faker 值

Set a faker value less than another faker field

php

laravel

factory

faker