每日，每周，每月套餐的价格选项

Question

我正在为我工​​作的公司创建一个用于食品配送的电子商务网站。
这不是一个简单的电子商务网站，我正在用PHP OOP自定义它。就像包一样，充满了可定制的内容，而不是固定的。
以下是图形：
食物计划1 是我们在管理面板中创建的套餐名称，每周，每天，每月是可自定义的选项，您可以看到的每个选项的价格都有不同的价格。这就是概念。
现在，当用户单击choose package按钮时，将出现问题表单，这里是表单：

我希望我的价格（我存储在数据库中的价格）仅在用户单击daily并在下面单击午餐/早餐/晚餐时才显示，而lunch/breakfast/dinner的价格仅适用于daily选项。和点击weekly和monthly一样。
这是数据库屏幕截图：
这里，d代表daily，w代表weekly，m代表monthly。
这是我的代码：

<?php

    $getPlanById = $plan->getPlanById($proId);
    if($getPlanById){
        $result = $getPlanById->fetch_assoc();
            $m_breakfast_price = $result['m_breakfast_price'];
            $m_lunch_price = $result['m_lunch_price'];
            $m_dinner_price = $result['m_dinner_price'];
            $w_breakfast_price = $result['w_breakfast_price'];
            $w_lunch_price = $result['w_lunch_price'];
            $w_dinner_price = $result['w_dinner_price'];
            $d_breakfast_pric = $result['d_breakfast_price'];
            $d_lunch_price = $result['d_lunch_price'];
            $d_dinner_price = $result['d_dinner_price'];

?>

    <div class="col-md-6 offset-md-3">
        <h2 class="h2-responsive font-weight-bold mt-5 mb-0">You've choosed <span class="text-primary border-bottom border-primary"><?php echo $result['pro_name']; ?></span> package.</h2>
        <label>Rs./<?php echo $result['m_breakfast_price']; ?></label>
    </div>

<?php } ?>

<div class="select_package_validity">
    <h5 class="h5-responsive font-weight-bold">1. Select your package validity.</h5>
    <input type="radio" class="custom-control-input plan_name" id="daily" name="plan_name_selector" value="Daily">
    <input type="radio" class="custom-control-input plan_name" id="weekly" name="plan_name_selector" value="Weekly">
    <input type="radio" class="custom-control-input plan_name" id="monthly" name="plan_name_selector" value="Monthly">
    <input type="hidden" name="plan_name" class="form-control ml-4 mt-2 w-50 selected_plan_name" />
</div>
<div class="select_days mt-4">
    <h5 class="h5-responsive font-weight-bold q2_text">2. How many days you need service in a week?</h5>
    <input type="radio" class="custom-control-input plan_days" id="5" name="plan_days_selector" value="5">
    <input type="radio" class="custom-control-input plan_days" id="6" name="plan_days_selector" value="6">
    <input type="radio" class="custom-control-input plan_days" id="7" name="plan_days_selector" value="7">
    <input type="hidden" name="plan_days" class="form-control ml-4 mt-2 w-50 selected_plan_days" />
</div>
<div class="days_names mt-4">
    <h5 class="h5-responsive font-weight-bold q3_text mb-2">3. Select the days.</h5>
    <input type="checkbox" class="custom-control-input" id="monday" name="day_name_selector" value="Monday">
    <input type="checkbox" class="custom-control-input" id="tuesday" name="day_name_selector" value="Tuesday">
    <input type="checkbox" class="custom-control-input" id="wednesday" name="day_name_selector" value="Wednesday">
    <input type="checkbox" class="custom-control-input" id="thursday" name="day_name_selector" value="Thursday">
    <input type="checkbox" class="custom-control-input" id="friday" name="day_name_selector" value="Friday">
    <input type="checkbox" class="custom-control-input" id="saturday" name="day_name_selector" value="Saturday">
    <input type="checkbox" class="custom-control-input" id="sunday" name="day_name_selector" value="Sunday">
</div>
<input type="hidden" class="form-control selected_days_names" name="days_names" />
</div>
<div class="food_time">
    <h5 class="h5-responsive font-weight-bold">4. Select your food time</h5>
    <input type="checkbox" class="custom-control-input" id="breakfast" name="food_time_selector" value="Breakfast">
    <input type="checkbox" class="custom-control-input" id="lunch" name="food_time_selector" value="Lunch">
    <input type="checkbox" class="custom-control-input" id="dinner" name="food_time_selector" value="Dinner">
    <input type="hidden" class="form-control selected_food_time" name="food_time" />
</div>
<div class="plan_date_time">
    <h5 class="h5-responsive font-weight-bold">5. When you want to start your package?</h5>
    <input type="text" class="form-control startsfromdatetime" name="starts_from" placeholder="Select date..." />
</div>

那么，您能告诉我如何根据选择的daily/weekly/monthly和lunch/dinner/breakfast显示价格吗？ 应该使用jQuery还是PHP？ 请帮助我。

Answer 1

您需要在此处结合使用PHP和Javascript。后端需要PHP才能以对象的形式从数据库中获取数据，然后如果选择了某个选项，则Javascript会使用PHP在页面上显示价格。

请注意，您需要进行ajax调用才能将对象从PHP转换为Javascript，对于现代浏览器，可以使用XHR，jQuery.ajax()或Fetch API来完成。

下面是一个示例：

var validityButtons = document.getElementsByName('validity');
var foodTimeButtons = document.getElementsByName('foodtime');
var prices = {
  breakfast: {
    daily: 120,
    weekly: 110,
    monthly: 100
  },
  lunch: {
    daily: 150,
    weekly: 130,
    monthly: 120
  },
  dinner: {
    daily: 150,
    weekly: 130,
    monthly: 120
  },
};

function calculatePrice() {
  var price = 0;
  var currentOption;
  var showPrice = document.getElementById('price');
  
  /* Iterate through radio buttons to get the checked one */
  validityButtons.forEach(function(button) {
    if (button.checked === true) {
    	currentOption = button.value;
    }
  });
  
  /* Iterate through checkboxes to calculate price depending on selected options */
  foodTimeButtons.forEach(function(button) {
 		if (button.checked) {
    	switch(button.value) {
        case 'breakfast':
          price += prices.breakfast[currentOption];
          break;
        case 'lunch':
          price += prices.lunch[currentOption];
          break;
        case 'dinner':
          price += prices.dinner[currentOption];
          break;
        default:
          break;
      }
    }
  });
  
  /* Show price */
  showPrice.innerText = price;
}

/* Fire a function when radio button gets clicked */
validityButtons.forEach(function(button) {
	button.addEventListener('change', calculatePrice);
});

/* Fire a function when checkboxes are clicked */
foodTimeButtons.forEach(function(button) {
	button.addEventListener('change', calculatePrice);
});

/* Calculate the price based on selected options on page load */
calculatePrice();

Select your package validity:
<label>
  <input type="radio" name="validity" value="daily" checked> Daily
</label>
<label>
  <input type="radio" name="validity" value="weekly"> Weekly
</label>
<label>
  <input type="radio" name="validity" value="monthly"> Monthly
</label>
<br><br>
Select your food time:
<label>
  <input type="checkbox" name="foodtime" value="breakfast" checked> Breakfast
</label>
<label>
  <input type="checkbox" name="foodtime" value="lunch"> Lunch
</label>
<label>
  <input type="checkbox" name="foodtime" value="dinner"> Dinner
</label>
<br><br>
Your price: <strong id="price"></strong>