从另一个选择框中填充一个选择框并使用数据库连接

Question

I have two select boxes: one is country and the other one is cities. 我有两个选择框：一个是国家，另一个是城市。 When the user selects a country, the appropriate cities for that country should be populated in the "cities" from the database. 当用户选择一个国家时，应该在数据库的“城市”中填充该国家的适当城市。

I am new to jquery and javascript and i am not sure how to implement this. 我是jquery和javascript的新手，我不确定如何实现此功能。 It will be appreciated if someone gives me a sample code for performing this functionality. 如果有人给我示例代码来执行此功能，将不胜感激。 I have no idea and i am pretty much stuck as i am new to the scripting languages. 我不知道，因为我是脚本语言的新手，所以我非常困惑。

I am using this in one of my forms in django framework which is implemented in python. 我正在以Django实现的一种形式在Django框架中使用它。

Thank you in advance 先感谢您

<!DOCTYPE html>
<html>
<head>
  <style>
  div { color:red; }
  </style>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
  <select name="country" id="country">
    <option value = "india">india</option>
    <option value = "USA">USA</option>
    <option value = "UK">UK</option>
    <option value = "China">China</option>
    <option value = "Sweden">Sweden</option>
    <option value = "Germany">Germany</option>
  </select>

  <select name="cities" id="cities">
  <option value = ""></option>
  </select>  
  <div></div>  

</body>
</html>

Answer 1

Try this: 尝试这个：

In your template 在您的模板中

 $('#country').change(function() { 
    var value = $(this).attr('value'); 
    var request = $.ajax({
        url: "/getcities/",
        type: "GET",
        data: {country : value},
        dataType: "json",

        success: function(data) {
         //Popluate combo here by unpacking the json
        }
    });


});

In your view: 您认为：

def getcities(request)
    if request.method == "GET":
        country = request.GET["country"]
        cities = Cities.objects.filter(country=country)
        results = [{'city': str(city.name), 'id':city.id} for city in cities]
        json = simplejson.dumps(results)
        return HttpResponse(json, mimetype='application/json')

You will have to map the url /getcities/ to your view in urls.py. 您必须将url / getcities /映射到urls.py中的视图。

从另一个选择框中填充一个选择框并使用数据库连接

问题描述

1 个解决方案

解决方案1
0 已采纳 2012-08-07 09:15:11

从另一个选择框中填充一个选择框并使用数据库连接

问题描述

1 个解决方案

解决方案1 0 已采纳 2012-08-07 09:15:11

解决方案1
0 已采纳 2012-08-07 09:15:11