如何使分页与过滤 django 一起使用？
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【中文标题】如何使分页与过滤 django 一起使用？【英文标题】：How can I make pagination to work with filtering django? 【发布时间】：2021-12-29 21:07:28 【问题描述】：我有一个分页的网页，但是当我点击第二个按钮时，我的数据库中的所有数据都会出现，我只想根据我设置的过滤器进行分页，就像技术调查只会出现状态为技术调查。
升序排序是有效的，但是当我点击零件编号或其他 3 个时，它也会显示数据库中的所有数据，如何防止这种情况并仅显示过滤的数据库下一个状态？
这是我当前的页面，但是当我点击数字 2 时，所有数据都会出现，我对下一个状态技术调查的过滤将不再起作用。
views.py
@login_required()
def investigation(request):
search_post = request.GET.get('q')
# Code for the users to search for reception, partno, serialno, mconum, customername
if (search_post is not None) and search_post:
allusername = Photo.objects.filter(Q(reception__icontains=search_post) | Q(partno__icontains=search_post) | Q(
Customername__icontains=search_post) | Q(mcoNum__icontains=search_post) | Q(
serialno__icontains=search_post))
if not allusername:
allusername = Photo.objects.all().order_by("-Datetime")
else:
allusername = Photo.objects.all().filter(Q(nextstatus='Technical Investigation')).order_by("-Datetime")
# Sort BY:
part = request.GET.get('sortType')
valid_sort = ["partno", "serialno", "Customername", "mcoNum"] # Sort the workshop data in ascending order acording to the part number, serial number, customer name and the MCO Number
if (part is not None) and part in valid_sort:
allusername = allusername.order_by(part)
page = request.GET.get('page')
paginator = Paginator(allusername, 10) # 1 page will only show 10 data, if more than 10 data it will move it to the next page.
try:
allusername = paginator.page(page)
except PageNotAnInteger:
allusername = paginator.page(1)
except EmptyPage:
allusername = paginator.page(paginator.num_pages)
context = 'allusername': allusername, 'query': search_post, 'order_by': part
return render(request, 'workshop/investigation.html', context)
调查.html
% extends "workshop/workshopbase.html" %
% block content %
<meta http-equiv="refresh" content="60">
<style>
table
border-collapse:separate;
border:solid black 1px;
border-radius:6px;
-moz-border-radius:6px;
td, th
border-left:solid black 1px;
border-top:solid black 1px;
th
border-top: none;
td:first-child, th:first-child
border-left: none;
ul.pagination li a
display: block;
padding: 5px 15px;
ul.pagination li.active
padding: 5px 15px;
background-color: hsla(199, 34%, 55%, 1);
border-radius: 30px;
color: white;
ul.pagination li.disabled
padding: 5px 15px;
ul.pagination li
display: block;
//border: 1px solid hsla(199, 34%, 64%, 0.74);
ul.pagination li a:hover,
ul.pagination li a:active
border-radius: 30px;
background-color: hsla(199, 34%, 64%, 0.74);
@media only screen and (min-width: 268px)
ul.pagination
display: flex;
justify-content: left;
align-items: right;
font-size: 18px;
.sort
display: inline;
margin: 0 15px 0 20px;
</style>
<script>
// Function to download table data into csv file
function download_table_as_csv(table_id, separator = ',')
var rows = document.querySelectorAll('table#' + table_id + ' tr');
var csv = [];
for (var i = 0; i < rows.length; i++)
var row = [], cols = rows[i].querySelectorAll('td, th');
for (var j = 0; j < cols.length; j++)
var data = cols[j].innerText.replace(/(\r\n|\n|\r)/gm, '').replace(/(\s\s)/gm, ' ')
data = data.replace(/"/g, '""');
row.push('"' + data + '"');
csv.push(row.join(separator));
var csv_string = csv.join('\n');
var filename = 'export_' + table_id + '_' + new Date().toLocaleDateString() + '.csv';
var link = document.createElement('a');
link.style.display = 'none';
link.setAttribute('target', '_blank');
link.setAttribute('href', 'data:text/csv;charset=utf-8,' + encodeURIComponent(csv_string));
link.setAttribute('download', filename);
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
;
if (urlParams.has('sortType'))
var checked = urlParams.get('sortType')
$(`#$checked`).prop("checked", true);
else
$(`#current_log`).prop("checked", true);
;
//Whenever sortType checkboxes is selected/unselected, add it to the url or remove it
);
$("input[name='sortType']").change(function ()
var selected = $('input[name="sortType"]:checked').val();
changeParams('sortType', selected)
);
</script>
<div style="padding-left:16px">
<br>
<div class="form-block">
<h6>Search for Part Number/ Serial Number/ Reception Number/ MCO Number/ Customer Name</h6>
<form class="form-inline my-2 my-lg-0" action="% url 'investigation' %" method='GET' value=' request.GET.q '>
<input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search" name="q" value=' request.GET.q '/>
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
<div class="sort">
<h5 class="col-md-3">Sort By : </h5>
<div id="sortBlock" class="col-md-9">
<form class="form-inline my-2 my-lg-0" action="" method='GET' value=' request.GET.sortType '>
<div class="sort">
<input type="radio" id="partno" name="sortType" value="partno">
<label for="partno">Part Number</label>
</div>
<div class="sort">
<input type="radio" id="serialno" name="sortType" value="serialno">
<label for="serialno">Serial Number</label>
</div>
<div class="sort">
<input type="radio" id="mcoNum" name="sortType" value="mcoNum">
<label for="mcoNum">MCO Number</label>
</div>
<div class="sort">
<input type="radio" id="Customername" name="sortType" value="Customername">
<label for="Customername">Customer Name</label>
</div>
<div class="sort">
<input type="Submit" value="Sort"/>
</div>
</form>
</div>
</div>
<br>
<table id="viewTable" class="m-2">
<i class="fa fa-download" aria-hidden="true"></i>
<a href="#" onclick="download_table_as_csv('viewTable');">Download as CSV</a>
<br>
<tr class="header">
<th>Latest Log</th>
<th>Part Number</th>
<th>Serial Number</th>
<th>Reception Number</th>
<th>MCO Number</th>
<th>Customer Name</th>
<th>Current Status</th>
<th>Next Status</th>
<th>Action</th>
</tr>
% for photo in allusername %
<tr>
<td>photo.Datetime</td>
<td>photo.partno</td>
<td>photo.serialno</td>
<td>photo.reception</td>
<td>photo.mcoNum</td>
<td>photo.Customername</td>
<td>photo.status</td>
<td>photo.nextstatus</td>
<td>
<form action="% url 'investigationdetails' photo.id %" method="post">
% csrf_token %
<button type="submit" class="btn btn-sm btn-info">View</button>
</form>
</td>
</tr>
% endfor %
</table>
% if allusername.has_other_pages %
<ul class="pagination pr-3 mr-1 ml-auto">
% if allusername.has_previous %
<li><a href="?q= query|urlencode &sortType= order_by &page= allusername.previous_page_number ">«</a></li>
% else %
<li class="disabled"><span>«</span></li>
% endif %
% for i in allusername.paginator.page_range %
% if allusername.number == i %
<li class="active"><span> i <span class="sr-only">(current)</span></span></li>
% else %
<li><a href="?q= query|urlencode &sortType= order_by &page= i "> i </a></li>
% endif %
% endfor %
% if allusername.has_next %
<li><a href="?q= query|urlencode &sortType= order_by &page= allusername.next_page_number ">»</a></li>
% else %
<li class="disabled"><span>»</span></li>
% endif %
</ul>
% endif %
</div>
</div>
% endblock %
【问题讨论】：
我需要分页、过滤下一个状态和排序依据才能工作 【参考方案1】：问题出在你的views.py中。你可以在尝试所有其他逻辑和排序之后调用Padignator之前调用 allusername = allusername.filter(Q(nextstatus__icontains='Technical Investigation'))。
@login_required()
def investigation(request):
search_post = request.GET.get('q')
# Code for the users to search for reception, partno, serialno, mconum, customername
if (search_post is not None) and search_post:
allusername = Photo.objects.filter(Q(reception__icontains=search_post) | Q(partno__icontains=search_post) | Q(
Customername__icontains=search_post) | Q(mcoNum__icontains=search_post) | Q(
serialno__icontains=search_post))
if not allusername:
allusername = Photo.objects.all().order_by("-Datetime")
else:
allusername = Photo.objects.all().order_by("-Datetime")
# Sort BY:
part = request.GET.get('sortType')
valid_sort = ["partno", "serialno", "Customername", "mcoNum"] # Sort the workshop data in ascending order acording to the part number, serial number, customer name and the MCO Number
if (part is not None) and part in valid_sort:
allusername = allusername.order_by(part)
page = request.GET.get('page')
allusername = allusername.filter(Q(nextstatus__icontains='Technical Investigation')) # new
paginator = Paginator(allusername, 10) # 1 page will only show 10 data, if more than 10 data it will move it to the next page.
try:
allusername = paginator.page(page)
except PageNotAnInteger:
allusername = paginator.page(1)
except EmptyPage:
allusername = paginator.page(paginator.num_pages)
context = 'allusername': allusername, 'query': search_post, 'order_by': part
return render(request, 'workshop/investigation.html', context)
【讨论】：
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