Django的问题：显示多个字段 [英] Question on Django: Displaying many to many fields

问题描述

在Django模板中渲染ManyToManyField时，我似乎遇到了问题。我可以使其部分工作，但我不能让它正常工作，因为我想它。

首先，我有一个发票模板，显示我的数据库中的发票详细信息 p>

 ＃invoice_details.html 
 {％extendsbase.html％} 
 
 {％{块内容％} 
< h2>发票明细< / h2> 
< div id =horizo​​ntalnav> 
< a href =/ index / add_invoice>添加发票< / a> 
< a href =/ index / work_orders>添加工单< / a> 
< a href =/ index / add_payment>添加付款< / a> 
< / div> 
< ul> 
< div id =list> 
 {invoices_list％中的发票％} 
 {{invoice.client}}< br /> 
 {{invoice.invoice_no}}< br /> 
 {{invoice.contract_info}}< br /> 
 {{invoice.date}}< br /> 
 {{invoice.work_orders}}< br /> 
 {％endfor％} 
< / div> 
< / ul> 
 {％endblock％} 
  

在我的数据库中，{{invoice.work_orders}}是如下所示显示。这是因为{{invoice.work_orders}}使用了一个manytomanyfield

 < django.db.models.fields.related.ManyRelatedManager对象在0x8a811ec> 
  

现在我尝试将{{invoice.work_orders}}更改为{{invoice.work_orders.all} }
$ b

  [< Work_Order：保证支持服务>] 
  

这类作品，但我希望它只显示保证支持服务。所以我想知道如何做到这一点。如果可能的话。

{{invoice .work_orders.all} 是 Work_Order 对象的列表。

如果你想打印它们，你应该迭代清单：

  {invoice.work_orders.all％中的发票所占的百分比} 
 {{发票}}< br /> 
 {％endfor％} 
  

I seem to have a problem with Django when it comes Rendering ManyToManyField in a template. I can make it work partially, but I cannot make it work properly as I want it.

Firstly I have an invoice template which displays Invoice details from my data base

#invoice_details.html
{% extends "base.html" %}

{% block content %}
<h2>Invoice Details</h2>
<div id="horizontalnav">
  <a href="/index/add_invoice">Add an Invoice</a>
  <a href="/index/work_orders">Add a Work Order</a>
  <a href="/index/add_payment">Add Payment</a>
</div>
<ul>
  <div id="list">
     {% for invoice in invoices_list %}
       {{invoice.client}}<br/>
       {{invoice.invoice_no}}<br/>
       {{invoice.contract_info}}<br/>
       {{invoice.date}}<br/>
       {{invoice.work_orders}}<br/>
     {% endfor %}
    </div>
</ul>
{% endblock %}

In my database, {{invoice.work_orders}} was displayed like the following below. This is because {{invoice.work_orders}} uses a manytomanyfield

<django.db.models.fields.related.ManyRelatedManager object at 0x8a811ec>

Now I tried to change {{invoice.work_orders}} to {{invoice.work_orders.all}} and I got this.

[<Work_Order: Assurance Support Service >]

This sort of works, but I want it to display "Assurance Support Service" only. So I am wondering how I can do this change if possible.

解决方案

The content of {{invoice.work_orders.all} is a list of Work_Order objects.
If you want to print them, you should iterate the list:

{% for invoice in invoice.work_orders.all %}
  {{invoice}}<br />
{% endfor %}

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