带有ajax的Django过滤器功能不起作用
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【中文标题】带有ajax的Django过滤器功能不起作用【英文标题】:Django filter feature with ajax not working 【发布时间】:2021-08-16 09:31:48 【问题描述】:我有一个用于跟踪工作申请的表格,并且我正在尝试实现过滤功能。我想用分页显示结果。但是,我在尝试这样做时遇到了错误,并且似乎无法摆脱它。我希望在不刷新页面的情况下显示结果。我认为问题出在查询上。
请帮忙.... :(((
这是我的代码:
模板文件
<ul id="filter_list" class="dropdown-menu">
<li><a href="#">Alphabetical Order (A-Z)</a></li>
<li><a href="#">Application Date (Ascending)</a></li>
<li><a href="#">Application Date (Descending)</a></li>
<li><a href="#">Closing Date</a></li>
</ul>
<div id="table_results">
<div>
<script>
$(".dropdown-menu a").click(function()
var selected_filter = $(this).text();
$.ajax(
url:'% url "stu_filter_applications" %',
data:
"filter_category": selected_filter,
,
dataType:'json',
success: function (response)
//I want the page to not refresh here
,
error: function (response)
console.log(response.errors);
,
);
);
</script>
views.py:
def stu_filter_applications(request):
filter_cat = request.GET.get("filter_category", None)
student = StudentUser.objects.get(user=request.user)
if filter_cat == "Alphabetical Order (A-Z)":
int_applications =
InternshipApplication.objects.filter(student=student).
order_by('internship__internship_title')
if filter_cat == "Application Date (Ascending)":
int_applications =
InternshipApplication.objects.filter(student=student).
order_by('application_date')
if filter_cat == "Application Date (Descending)":
int_applications =
InternshipApplication.objects.filter(student=student).
order_by('-application_date')
if filter_cat == "Closing Date":
int_applications =
InternshipApplication.objects.filter(student=student).
order_by('-internship__internship_deadline')
applications = []
for app in int_applications:
internship = Internship.objects.get(id=app.internship.id)
recruiter = Recruiter.objects.get(id=internship.recruiter.id)
applications.append((internship,recruiter,app))
for internship, recruiter, app in applications:
print(internship)
print(recruiter)
print(app)
paginator = Paginator(applications, 3)
page = request.GET.get('page', 1)
try:
applications = paginator.page(page)
except PageNotAnInteger:
applications = paginator.page(1)
except EmptyPage:
applications = paginator.page(paginator.num_pages)
context =
'applications': applications,
'filter_by': filter_cat,
return render(request,'track_internship.html', context)
track_internship.html
<ul id="filter_list" class="dropdown-menu">
<li><a href="#">Alphabetical Order (A-Z)</a></li>
<li><a href="#">Application Date (Ascending)</a></li>
<li><a href="#">Application Date (Descending)</a></li>
<li><a href="#">Closing Date</a></li>
</ul>
<table style="width:100%; margin-top: 20px;" id="app_table" class="table">
<thead>
<tr style="background-color:#012D6C; color:white;"
class="table_row">
<th>Company</th>
<th>Title</th>
<th>Type</th>
<th>Link to advert</th>
<th>Posted Date</th>
<th>Closing Date</th>
<th>Application Date</th>
<th>Status</th>
</tr>
</thead>
<div id="table_results">
<tbody>
% for internship, recruiter, app in applications %
<tr style="background-color: #E9F4FF" class="table_row">
<td> recruiter.company_name </td>
<td> internship.internship_title </td>
<td> internship.internship_mode</td>
<td><a style="color:blue; text-decoration:
underline;" href="http://127.0.0.1:8000/view_details/
internship.id ">Click here</a></td>
<td> internship.posted_date </td>
<td> internship.internship_deadline </td>
<td> app.application_date </td>
<td> app.status </td>
</tr>
% endfor%
</tbody>
</table>
% if applications.has_other_pages %
<div class="pagination">
% if applications.has_previous %
<a href="?page= applications.previous_page_number "><i
class="fa fa-chevron-left" aria-hidden="true"></i></a>
% else %
<a class="disabled"><span><i class="fa fa-chevron-left" aria-
hidden="true"></i></span></a>
% endif %
% if applications.number|add:'-2' > 1 %
<a href="?page= applications.number|add:'-3' ">…
</a>
% endif %
% for i in applications.paginator.page_range %
% if applications.number == i %
<a class="active"><span> i <span class="sr-only">
(current)</span></span></a>
% elif i > applications.number|add:'-3' and i <
applications.number|add:'3' %
<a href="?page= i "> i </a>
% endif %
% endfor %
% if applications.paginator.num_pages >
applications.number|add:'4' %
<a href="?page= applications.number|add:'3' ">…
</a>
% endif %
% if applications.has_next %
<a href="?page= applications.next_page_number "><i
class="fa fa-chevron-right" aria-hidden="true"></i></a>
% else %
<a class="disabled"><span><i class="fa fa-chevron-right"
aria-hidden="true"></i></span></a>
% endif %
models.py
class StudentUser(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
gender = models.CharField(max_length=1, choices=GENDER_CHOICES,
null=True, blank=True)
class Internship(models.Model):
recruiter = models.ForeignKey(Recruiter, on_delete=models.SET_NULL, null=True)
internship_title = models.CharField(max_length=100)
internship_deadline = models.DateField()
class InternshipApplication(models.Model):
internship = models.ForeignKey(Internship, on_delete=models.CASCADE)
student = models.ForeignKey(StudentUser,on_delete=models.SET_NULL, null=True)
application_date = models.DateField()
【问题讨论】:
您面临的确切错误是什么?目前尚不清楚您要做什么,因此如果您过滤结果,您希望 ajax 调用填充新数据,然后在页面之间移动过滤结果,请使其更清晰。 @AAB,我有一个表格,它以分页的形式显示结果。单击过滤器后,例如按截止日期排序,我希望页面更新,但这次是按截止日期对作业进行排序。我希望我是清楚的。 你能把错误贴出来,这样更容易调试 @AAB,我没有收到错误,但它不起作用。以前,它告诉我该对象不存在属性实习.internship_title。关闭日期相同。但现在,不是说 :// 如果您删除 request.is_ajax(),并打开带有页面参数的 url 并过滤它什么都不打印?您正在返回 html,所以应该打印的东西不能为空白您可以发布您正在呈现的 html 吗? 【参考方案1】:根据您的模型、模板、视图,您需要更改以下内容:
将实习生.internship_deadline 更改为实习__internship_deadline 并将实习生.internship_title 更改为实习__internship_title。
您可以将实习、招聘人员、int_applications 作为单独的对象传递。 int_applications 应该返回多个对象,这与您使用 .get() 的招聘人员和实习生不同
在使用 orderby 的分页模板中,url 必须如下:
?page=value&filter_category=value
在您的 views.py 中,您似乎只是根据用户输入对值进行排序,因此我建议您将其更改为 order_by,因为您除了排序之外没有过滤任何内容。
【讨论】:
我更新了views.py的代码。请您提供进一步的帮助吗? 第 3 部分和第 4 部分以上是关于带有ajax的Django过滤器功能不起作用的主要内容,如果未能解决你的问题,请参考以下文章