码迷,mamicode.com
首页 > Web开发 > 详细

Django前端页面利用ajax动态显示数据

时间:2017-10-10 14:37:31      阅读:251      评论:0      收藏:0      [点我收藏+]

标签:http   $.ajax   情况下   hang   function   image   nec   opened   公司   

以下代码是某个项目中的一部分,无法直接使用。

1、需要有一个试图返回数据据(数据API)

技术分享
def dataYear(request):
    """
       统计所有数据的界面, 生成年份标签
    """
    year = request.GET[year]
    table_type = request.GET[table]
    cursor = connections[stats].cursor()

    provinceSql = "SELECT DISTINCT province FROM YEAR_DATA_QUALITY_VIEW WHERE table_type=‘crawlerapp_results_history‘"
    cursor.execute(provinceSql)
    company_year_records = cursor.fetchall()
    provinces_list = []
    for company_year_record in company_year_records:
        provinces_list.append(company_year_record[0])

    detail_info = {}

    # 创建月份的统计数据视图
    for province in provinces_list:
        detail_info[province] = {}
        yearSql = "SELECT syear, province, records_count FROM YEAR_DATA_QUALITY_VIEW WHERE table_type=‘%s‘ AND province=‘%s‘ AND syear=‘%s‘ ORDER BY syear" % (
            table_type, province, year)
        cursor.execute(yearSql)
        company_year_records = cursor.fetchall()
        if len(company_year_records) > 0:
            detail_info[province][year] = company_year_records[0][0]
            detail_info[province][province] = company_year_records[0][1]
            detail_info[province][year_total] = company_year_records[0][2]
        else:
            context = {detail_info: {}}
            return HttpResponse(json.dumps(context))

        monthSql = "SELECT syear, province, month, records_count FROM month_results_view WHERE table_type=‘%s‘ AND province=‘%s‘ AND syear=‘%s‘ ORDER BY month" % (
            table_type, province, year)
        cursor.execute(monthSql)
        company_month_records = cursor.fetchall()
        # detail_info[province][‘‘] = company_month_records[0][0] #年份
        # detail_info[province][‘‘] = company_month_records[0][1] #省份
        # detail_info[province][‘month_data‘] ={}
        for init_month in range(1, 13):
            detail_info[province][month + str(init_month)] = 暂无数据
        for month_data in company_month_records:
            # detail_info[province][month_data[2]] = month_data[2] #月份
            detail_info[province][month + str(month_data[2])] = month_data[3]  # 数据量

        baseInfoSql = "SELECT syear, company_count, monitor_count, monitor_info_count FROM COMPANY_BASE_INFO_VIEW WHERE province=‘%s‘ AND syear=‘%s‘ ORDER BY syear" % (
            province,year)
        cursor.execute(baseInfoSql)
        company_base_infos = cursor.fetchall()
        # detail_info[province][‘base_info‘] ={}
        detail_info[province][base_year] = company_base_infos[0][0]
        detail_info[province][base_company_count] = company_base_infos[0][1]
        detail_info[province][base_monitor_count] = company_base_infos[0][2]
        detail_info[province][base_monitor_info_count] = company_base_infos[0][3]

    context = {detail_info: detail_info}
    # return render(request, ‘test.html‘, context)
    print data year, -*50
    return HttpResponse(json.dumps(context))
View Code

2、需要一个视图对数据进行渲染

技术分享
def dataOverview(request):
    """
    统计所有数据的界面, 生成年份标签
    """
    cursor = connections[stats].cursor()
    # 获取视图中的年份
    yearSql = "SELECT DISTINCT syear FROM YEAR_DATA_QUALITY_VIEW WHERE table_type=‘crawlerapp_results_history‘"
    cursor.execute(yearSql)
    company_year_records = cursor.fetchall()
    year_list = []
    for company_year_record in company_year_records:
        year_list.append(company_year_record[0])

    context = {year_list: year_list}
    return render(request, overview.html, context)
View Code

3、使用ajax

技术分享
{% extends ‘new_base.html‘ %}

{% block grid %}
<div class="ui equal width grid" style="margin:5px 0 5px 0;width:70%">

{#  ------------------------------------------------ CHART BLOCK ---------------------------------------------------  #}
    <div class="row">
      <div class="column">
        <div class="ui container segment">
            <div class="ui compact menu">

                <select name="year" class="ui dropdown" id="year">
                    <option value="">年份</option>
                    {% for year in year_list %}
                        <option class="item py_item" value={{year}}>{{year}}</option>
                    {% endfor %}
                </select>

                <select name="table_type" class="ui dropdown" id="table">
                    <!--<option value="">Gender</option>-->
                    <option value="crawlerapp_results_history">历史监测数据</option>
                    <option value="crawlerapp_results">实时监测数据</option>
                </select>
            </div>
            {#                表格1#}
            <div class="table-container">
                <table class="ui nine column table celled table-result" id="table-result">
                    <thead>
                        <tr>
                            <th>省份</th>
                            <th>监测数据总数</th>
                            <th>1月</th>
                            <th>2月</th>
                            <th>3月</th>
                            <th>4月</th>
                            <th>5月</th>
                            <th>6月</th>
                            <th>7月</th>
                            <th>8月</th>
                            <th>9月</th>
                            <th>10月</th>
                            <th>11月</th>
                            <th>12月</th>
                        </tr>
                    </thead>
                    <tbody id="tbody-result">
                    </tbody>
                </table>
            </div>
             {#                表格1#}
            <div class="table-container">
                <table class="ui nine column table celled table-result" id="table-result2">
                    <thead>
                        <tr>
                            <th>省份</th>
                            <th>公司数量</th>
                            <th>监测点数量</th>
                            <th>监测因在数量</th>
                        </tr>
                    </thead>
                    <tbody id="tbody-result2">
                    </tbody>
                </table>
            </div>



        </div>
      </div>
    </div>
{#  ------------------------------------------------ CHART BLOCK ---------------------------------------------------  #}
</div>
{% endblock %}



{% block table %}
     <script>
//        年份下拉框的改变事件
        $(#year)
          .dropdown({
//            action: ‘hide‘,
              onChange: function (value, text, $selectedItem) {
//              获取表类型参数
                  var tableType = $(#table).dropdown(get value)[0];
                  var tableTypeText = $(#table).dropdown(get text)[0];
                  console.log((tableType));
//            获取选中年份的字段
                  var year = value;
                  console.log((year))
                  var tbody=window.document.getElementById("tbody-result");
                  var tbody2=window.document.getElementById("tbody-result2");
                  $.ajax({
                      url:"year/?year="+year+"&table=" + tableType,
                      type:GET,
                      success:function (msg) {
{#                          反序列化#}
                          var data = eval(( + msg + ));
                          console.log(typeof(msg));
                          var table_data = data[detail_info];
                          console.log(table_data)
                          var str1 = ‘‘;
                          var str2 = ‘‘;
                          if (!table_data){
                              tbody.innerHTML=‘‘;
                              tbody2.innerHTML=‘‘;
                              return
                          }
                          for ( k in table_data){
                              console.log(k)
                              str1 += "<tr>" +
                                  "<td>"+ table_data[k][province] +"</td>" +
                                  "<td>"+ table_data[k][year_total] +"</td>" +
                                  "<td>"+ table_data[k][month1] +"</td>" +
                                  "<td>"+ table_data[k][month2] +"</td>" +
                                  "<td>"+ table_data[k][month3] +"</td>" +
                                  "<td>"+ table_data[k][month4] +"</td>" +
                                  "<td>"+ table_data[k][month5] +"</td>" +
                                  "<td>"+ table_data[k][month6] +"</td>" +
                                  "<td>"+ table_data[k][month7] +"</td>" +
                                  "<td>"+ table_data[k][month8] +"</td>" +
                                  "<td>"+ table_data[k][month9] +"</td>" +
                                  "<td>"+ table_data[k][month10] +"</td>" +
                                  "<td>"+ table_data[k][month11] +"</td>" +
                                  "<td>"+ table_data[k][month12] +"</td>" +
                              "</tr>"
                              str2 += "<tr>"+
                                        "<td>"+ table_data[k][province] +"</td>" +
                                        "<td>"+ table_data[k][base_company_count] +"</td>" +
                                        "<td>"+ table_data[k][base_monitor_count] +"</td>" +
                                        "<td>"+ table_data[k][base_monitor_info_count] +"</td>" +
                                      "</tr>"
                          }
                          tbody.innerHTML = str1;
                          tbody2.innerHTML = str2;

                      }
                  })

              }
          });
        //        实时表或是历史表的改变类型触发
        $(#table)
          .dropdown({
//            action: ‘hide‘,
              onChange: function (value, text, $selectedItem) {
//                console.log(value, text);
//                  获取表类型参数
                  var year = $(#year).dropdown(get value)[0];
//                如果没有年份被选中,则返回
                  if (year == "") return;
                  console.log((year));
//                获取选中年份的字段
                  var tableType = value;
                  var tableTypeText = text;
                  console.log(tableType)
{#                   if( !tableType || !year){#}
{#                        alert("缺少参数,必须要指年份!");#}
{#                        return;#}
{#                    }#}
                  var tbody=window.document.getElementById("tbody-result");
                  var tbody2=window.document.getElementById("tbody-result2");
                  $.ajax({
                      url:"year/?year="+year+"&table=" + tableType,
                      type:GET,
                      success:function (msg) {
{#                          反序列化#}
                          var data = eval(( + msg + ));
                          console.log(typeof(msg));
                          var table_data = data[detail_info];
                          console.log(table_data)
                          var str1 = ‘‘;
                          var str2 = ‘‘;
                          if (!table_data){
                              tbody.innerHTML=‘‘;
                              tbody2.innerHTML=‘‘;
                              return
                          }
                          for ( k in table_data){
                              console.log(k)
                              str1 += "<tr>" +
                                          "<td>"+ table_data[k][province] +"</td>" +
                                          "<td>"+ table_data[k][year_total] +"</td>" +
                                          "<td>"+ table_data[k][month1] +"</td>" +
                                          "<td>"+ table_data[k][month2] +"</td>" +
                                          "<td>"+ table_data[k][month3] +"</td>" +
                                          "<td>"+ table_data[k][month4] +"</td>" +
                                          "<td>"+ table_data[k][month5] +"</td>" +
                                          "<td>"+ table_data[k][month6] +"</td>" +
                                          "<td>"+ table_data[k][month7] +"</td>" +
                                          "<td>"+ table_data[k][month8] +"</td>" +
                                          "<td>"+ table_data[k][month9] +"</td>" +
                                          "<td>"+ table_data[k][month10] +"</td>" +
                                          "<td>"+ table_data[k][month11] +"</td>" +
                                          "<td>"+ table_data[k][month12] +"</td>" +
                                    "</tr>"
                              str2 += "<tr>"+
                                        "<td>"+ table_data[k][province] +"</td>" +
                                        "<td>"+ table_data[k][base_company_count] +"</td>" +
                                        "<td>"+ table_data[k][base_monitor_count] +"</td>" +
                                        "<td>"+ table_data[k][base_monitor_info_count] +"</td>" +
                                      "</tr>"
                          }
                          tbody.innerHTML = str1;
                          tbody2.innerHTML = str2;

                      }
                  })

              }
          });

     </script>

{% endblock %}
View Code

 4、显示效果

选择条件:

技术分享

动态获取数据,在不重新刷新页面的情况下加载数据表单

技术分享

 

Django前端页面利用ajax动态显示数据

标签:http   $.ajax   情况下   hang   function   image   nec   opened   公司   

原文地址:http://www.cnblogs.com/liangping/p/7645057.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!