'nullable|string|max:100', 'quantity' => 'nullable|numeric|min:0', 'weight' => 'nullable|numeric|min:0', 'publish_amount' => 'nullable|numeric|min:0', 'actual_amount' => 'nullable|numeric|min:0', ]; } public function messages(): array { return [ 'quantity.numeric' => '订货量必须为数字', 'quantity.min' => '订货量不能小于 0', 'weight.numeric' => '称重必须为数字', 'weight.min' => '称重不能小于 0', 'publish_amount.numeric' => '公布金额必须为数字', 'publish_amount.min' => '公布金额不能小于 0', 'actual_amount.numeric' => '实际金额必须为数字', 'actual_amount.min' => '实际金额不能小于 0', ]; } }