我是Django的新手，我的索引页面显示了所有项目，包括project_number列，project_description列等。如果我要搜索项目描述，我希望在每一列中都有搜索字段，它将在同一页面中显示项目描述结果以及它们的project_number，反之亦然。我正在使用ajax，但给了我一个错误
内部服务器错误：/ polls / ajax / validate_username / 追溯（最近一次通话）： 在内部的文件“ /home/pdinh/environments/newproject/newenv/lib/python2.7/site-packages/django/core/handlers/exception.py”，第41行 响应= get_response（请求） 文件“ /home/pdinh/environments/newproject/newenv/lib/python2.7/site-packages/django/core/handlers/base.py”，行198，在_get_response中 “改为不返回。” ％（回调。模块，view_name） ValueError：视图polls.views.validate_username没有返回HttpResponse对象。它返回None。 [25 / Jul / 2018 16:06:51]“ GET / polls / ajax / validate_username /？the_post = HTTP / 1.1” 500 16574
有人可以帮我吗？除了ajax，其他所有东西都可以正常工作 以下是我的代码
{% block body %}
<div class = "container">
<!-- <form name = "search_form" action = "{% url 'search' %}">
<input type = "text" name = "search" placeholder = "Search"></input>
<button type = "submit" style = "height: 25px; width: 90px">Search</button><br/>
</form> -->
<!-- <form name="search_form" action="{ url 'search' %}" -->
<form >
<div class = "pagination">
<table class = "table table-hover table-dark">
<tr>
<th scope = "col">No</th>
<th scope = "col">Section</th>
<th scope = "col">Project Description</th>
<th scope = "col">Project ID</th>
<th scope = "col">Employee Name</th>
<th scope = "col">Funding Year </th>
</tr>
<tr>
<!-- <form name = "search_form" action = "{ url 'search' %}"> -->
<form name = "search_form" method="GET">
{% csrf_token %}
<div id="the_post">
<th scope = "col"><input type = "text" name = "search_no" placeholder = "Search"></input></th>
<th scope = "col"><input type = "text" name = "search_section" id="id_section" placeholder = "Search"></input></th>
<th scope = "col"><input type = "text" name = "search" id = "search1" placeholder = "Search"></input><input type="submit" value="Search"></input></th>
<th scope = "col"><input type = "text" name = "search_id" placeholder = "Search"></input></th>
<th scope = "col"><input type = "text" name = "search_name" placeholder = "Search"></input></th>
<th scope = "col"><input type = "text" name = "search_year" placeholder = "Search"></input></th>
</div>
</form>
</tr>
{% if projects %}
{% for project in projects%}
<tr>
<td> {{project.pro_no}} </td>
<td scope = "row"><a href = "{% url 'emp_detail' project.id %}">{{project.pro_section}}</a></td>
<td>{{project.pro_description}}</td>
<td>{{project.pro_ID}}</td>
<td>
{% for emp in project.employee.all %}
<table>
<tr><td>{{emp.first_name}}</td></tr>
</table>
{% endfor %}
</td>
<td>
{% for emp in project.employee.all %}
<table>
<tr><td>{{emp.funding_year}}</td></tr>
</table>
{% endfor %}
</td>
</tr>
{% endfor %}
{% endif %}
<span class = "step-links">
{% if projects.has_previous %}
<i class = "fa fa-angle-double-left" style="color:black"></i>
<a href = "?page={{projects.previous_page_number}}">Previous</a>
{% endif %}
<span class = "current">
Page {{projects.number}} of {{projects.paginator.num_pages}}.
</span>
{% if projects.has_next %}
<i class="fa fa-angle-double-right" style="color:black"></i>
<a class="fa fa-angle-double-right" style="color:black" href = "?page={{projects.next_page_number}}">Next</a>
{% endif %}
<span>
</table>
{% block javascript %}
<script>
$.ajax({
url: '{% url "validate_username" %}',
type: "GET",
data: {'the_post': $("#search1").val()},
success: function(data){
$("#search1").remove('');
alert("data:")
},
});
</script>
{% endblock %}
</div>
</form>
<!-- </form> -->
</div>
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
{% endblock %}
def validate_username(request):
if request.method == "GET":
description = request.GET.get('the_post')
#response_data = {}
#response_data['pro_description'] = Project.objects.filter(pro_description__icontains = description)
data = {
'pro_description': Project.objects.filter(pro_description__icontains = description)
}
#return HttpResponse(json.dumps(response_data), content_type = "application/json")
return JsonResponse(data)
url(r'^ajax/validate_username/$', views.validate_username, name = 'validate_username'),