Django排序表與分頁

我想對我的表格列進行排序（升序和降序，按下按鈕切換）。我遇到的問題是當我切換頁面時，表格出現故障。Django排序表與分頁

views.py

def company_index(request): 
    order_by = request.GET.get('order_by') 
    companies = Company.objects.all().order_by(Lower(order_by)) 

    paginator = Paginator(companies, 10) 
    page = request.GET.get('page') 
    try: 
     all_companies = paginator.page(page) 
    except PageNotAnInteger: 
     all_companies = paginator.page(1) 
    except EmptyPage: 
     all_companies = paginator.page(paginator.num_pages) 

    return render(request, 'companies/company_index.html', 
        {'all_companies': all_companies})

這裏是我在我的模板（爲了更好的可視性後我縮短類名）顯示數據：

<thead> 
    <tr> 
     <th>Company name <a class="glyphicon" href="?order_by=company_name"></a></th> 
     <th>Company address <a class="glyphicon" href="?order_by=company_address"></a></th> 
     <th>Tax ID <a class="glyphicon" href="?order_by=tax_id"></a></th> 
     <th>Company ID <a class="glyphicon" href="?order_by=company_id"></a></th> 
     <th>KRS Number <a class="glyphicon" href="?order_by=KRS_number"></a></th> 
    </tr> 
</thead>

我分頁代碼：

<ul class="pagination"> 
    {% if all_companies.has_previous %} 
    <li><a href="?page={{ all_companies.previous_page_number }}&?order_by={{order_by}}">previous</a></li> 
    {% endif %} 
    <li class="disabled"><a>Page {{ all_companies.number }} of {{ all_companies.paginator.num_pages }}</a></li> 
    {% if all_companies.has_next %} 
    <li><a href="?page={{ all_companies.next_page_number }}&?order_by={{order_by}}">next</a></li> 
    {% endif %} 
</ul>

當我切換到其他頁面時{{order_by}}傳遞無。另外，按下按鈕後，如何使其降序或升序排序？

我想在沒有外部應用程序或庫的情況下執行此操作，以便更好地理解django。

來源

2017-07-30 rockarou

你忘了在上下文中添加order_by：

return render(request, 'companies/company_index.html', 
       {'all_companies': all_companies, 'order_by': order_by})

升/降模板：

<a href="?order_by=company_name&direction=asc">company name ascending</a> 
<a href="?order_by=company_name&direction=desc">company name descending</a> 
... 
<a href="?page={{ all_companies.previous_page_number }}&order_by={{ order_by }}&direction={{ direction }}">previous</a> 
... 
<a href="?page={{ all_companies.next_page_number }}&order_by={{ order_by }}&direction={{ direction }}">next</a>

在視圖：

def company_index(request): 
    order_by = request.GET.get('order_by') 
    direction = request.GET.get('direction') 
    ordering = Lower(order_by) 
    if direction == 'desc': 
     ordering = '-{}'.format(ordering) 
    companies = Company.objects.all().order_by(ordering) 

    paginator = Paginator(companies, 10) 
    page = request.GET.get('page') 
    try: 
     all_companies = paginator.page(page) 
    except PageNotAnInteger: 
     all_companies = paginator.page(1) 
    except EmptyPage: 
     all_companies = paginator.page(paginator.num_pages) 

    return render(request, 'companies/company_index.html', 
        {'all_companies': all_companies, 
        'order_by': order_by, 'direction': direction})

來源

2017-07-31 18:18:35

Django排序表與分頁

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