设置faker值小于另一个faker字段

Question

你好，我正在为打折模式创建一个工厂。我有两个字段('original_price‘和'discounted_price')。我在工厂中使用randomFloat为‘原始_价格’创建一个带有2个小数的随机数。如何将“discounted_price”设置为总是比“原始价格”更低的值？

目前，'discounted_price‘具有与'original_price’相同的假值，因为我找不到这样的方法。

<?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，但我不知道这样做是否正确。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。这是正确的方法吗？

<?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

似乎是正确的，我建议您不要在数组值中混合和匹配属性赋值，以保持清楚。

        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)
            ];
        }