Django工程页面带参数跳转 和 $.post $.get
1.Django工程页面带参数跳转
html:
{% for question_item in question_items %}
<div class="subject_num">
<h3>第{{ question_item.num }}题</h3>
</div>
<div class="">
<div class="main_list_title">
<span>*</span> 陪练场景问题:</div>
<textarea rows="3" id="question_{{ question_item.num }}" placeholder="正在加载..." disabled>{{ question_item.question }}</textarea>
</div>
<div class="">
<div class="main_list_title">
<span>*</span> 用户答案:</div>
<textarea rows="2" class="user_answer" id="user_answer_{{ question_item.num }}" placeholder="请在此处输入您的答案..."></textarea>
</div>
{% endfor %}
views.py:
@csrf_exempt
def train_exam(request):
try:
request_data = request.GET['level']
except Exception as e:
print(Exception, ':', e)
return HttpResponse("抱歉，数据格式错误")
# 建立数据库链接
connect = pymysql.connect(host="", user="root", password="", db="",
port=3306,charset='utf8')
cur = connect.cursor()
sql_select = "select * from ytkj_preprocess_intellitrainExam where level=" + request_data
# 返回查询成功个数
num = cur.execute(sql_select)
# 获取查询成功返回的数据
results = cur.fetchall()
print(len(results))
print(results)
connect.close()
# 将查询数据库返回的数据集合封装为键值对，并返回前台页面
list_items = []
for row in results:
item = {}
item['num'] = row[0]
item['level'] = row[1]
item['question'] = row[2]
item['stdAnswer'] = row[3]
item['keySentence'] = row[4]
item['keyWord'] = row[5]
list_items.append(item)
# 根据查询结果返回数据
if num != 5:
return HttpResponse("数据库查询出错，请检查服务器")
else:
#return HttpResponse(results)
return render(request, 'train_exam.html', {'question_items': list_items})
2.$.post $.get
跳转前html的jquery：
$("#btn_start_exam").click(function () {
sub_val_level=$(".sub_val").text()
<!-- 如果用户未选择关卡则提示 -->
if (sub_val_level < 1 || sub_val_level > 10) {
$(".warning_info").text("温馨提示：请选择一个关卡再开始测试！")
//alert("请选择一个关卡再开始测试！")
} else {
//清除warning_info信息
$(".warning_info").text("")
//根据当前选择关卡请求115数据库，并返回数据
level = $(".sub_val").text()
parms = {
"level": level
};
str_parms = JSON.stringify(parms);
$.post(
"/searchExam", //url
{
'level': str_parms //params
},
function(res) { //result
try {
//alert(res)
resp = JSON.parse(res)
return
} catch(err) {
$(".warning_info").text("服务异常，请耐心等待修复")
return
}
//alert(resp)
//show_grade(resp.resp.scoreCorrect, resp.resp.scoreComplete, resp.resp.scoreCoherence, resp.resp.scoreLogic, resp.resp.scoreTotal, resp.resp.scoreHitRate, resp.info);
// return
}
);
document.cookie = "第"+sub_val_level+"关"
window.location.href = "/train_exam?level="+level
}
})
3.jQuery中json中关于带有html代码网页的处理
list_items = []
$(".subject_num").each(function () {
//获取当前题号
num = $(this).children('h3').children('span').text()
//根据题号获取该题所有信息
var list_item = eval("("+$("#main_list_all_" + num).text()+")")
//根据题号获取该题用户输入结果
user_input = $("#user_answer_" + num).val()
alert(user_input)
//将userAnswer添加至list_item
list_item.userAnswer=user_input
console.log(list_item)
//alert(list_item)
})
使用eval函数来解析 用jquery解析JSON数据的方法,作为jquery异步请求的传输对象，jquery请求后返回的结果是json对象,这里考虑的都是服务器返回JSON形式的字符串的形式，对于利用JSONObject等插件封装的JSON对象，与此亦是大同小异，这里不再做说明。 参考链接：https://www.cnblogs.com/fogwang/p/3213668.html
4.jquery往json中添加键值对
参考链接： https://blog.csdn.net/ainuser/article/details/80755996 http://www.cnblogs.com/ymj0906/p/9264729.html
5.django模板中for标签，计数器
{% for resp_result in resp_results %}
<div class="train_result_{{ forloop.counter }}">
<h3>第{{ forloop.counter }}题得分：</h3>
<div>
<i class="fa fa-check pr-10"></i>
<span>总得分:</span>
<span class="score_0">70</span>
<span>分</span>
</div>
<div>
<i class="fa fa-check pr-10"></i>
<span>正确性:</span>
<span class="score_1">90</span>
<span>分</span>
</div>
<div>
<i class="fa fa-check pr-10"></i>
<span>完整性:</span>
<span class="score_2">80</span>
<span>分</span>
</div>
<div>
<i class="fa fa-check pr-10"></i>
<span>连贯性:</span>
<span class="score_3">95</span>
<span>分</span>
</div>
<div>
<i class="fa fa-check pr-10"></i>
<span>逻辑性:</span>
<span class="score_4">60</span>
<span>分</span>
</div>
<div>
<i class="fa fa-check pr-10"></i>
<span>关键词命中率得分:</span>
<span class="score_keyword">50</span>
<span>分</span>
</div>
<div>
<span class="error_info" style="color:#ff0000"></span>
</div>
</div>
{{ resp_result }}
<hr/>
<hr/>
<hr/>
{% endfor %}
{% for aanswer in autoanswer %}
{{ forloop.counter }}
{% endfor %}
参考连接：https://blog.csdn.net/hadooppythondjango/article/details/8827416
6.Django工程views.py向html传值
views.py:
if flag == 0:
# 向该页面传入两个参数：resp_results为响应结果集，present_level为当前关卡值
return render(request, 'train_result.html', {'resp_results': resp_results, 'present_level': request_data_jsons[0]['level']})
else:
return HttpResponse("抱歉，服务暂停！")
jquery
//当前关卡提示
$('#exam_title').html("第" + {{ present_level }} + "关评测结果")
7.Django工程form表单提交与后台获取
<form id="train_exam_form" action="" method="">
<input name="list_items" id="hid_json_sub" type="hidden" value="">
</form>
//将封装好的json数据放入hidden的input的value，用于views.py根据name获取。(封装后后台一次获取，避免重复根据name获取)
$("#hid_json_sub").val(list_items_json)
//设置form的action和method，并提交
newUrl = '/train_result'
$("#train_exam_form").attr('action',newUrl)
$("#train_exam_form").attr('method','get')
$("#train_exam_form").submit()
//用问号带参数json字符串太长，效果不好。优化为：form表单get提交时将json数据传递
//window.location.href = "/train_result?list_items=" + list_items_json
# 通过问号带参数的获取方法：json.loads(request.GET['list_items'])
# 通过form表单提交根据name获取value的方法：json.loads(request.GET.get('list_items'))
# 解析json字符串
request_data_jsons = json.loads(request.GET.get('list_items'))
