遇到Django中的通知功能问题。

huangapple
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英文:

Having trouble with notifications feature in Django

问题

  1. <div class="dropdown-content" id="myDropdown">
  2.     {% if notifications %}
  3.         {% for notification in notifications %}
  4.             {% if notification.notification_type == 'created' %}
  5.                 <a href="#">{{notification.ticket.name}}: 有新工单分配给你。</a>
  6.             {% else %}
  7.                 <a href="#">{{notification.ticket.name}}: 工单已更新。</a>
  8.             {% endif %}
  9.         {% endfor %}
  10.     {% else %}
  11.         <a href="#">没有新通知。</a>
  12.     {% endif %}
  13. </div>
英文:

Created a notification feature in my django project. I've got all the functionality down and it works except for one thing. I want the template to display a different message depending on what action is committed. All it currently displays is 'The ticket has been updated' instead of 'A new ticket has been assigned to you.' How do I fix this?

Here is what i have so far.

template

  1. &lt;div class=&quot;dropdown-content&quot; id=&quot;myDropdown&quot;&gt;
  2.           {% if notifications %}
  3.             {% for notification in notifications %}
  4.               {% if notification.notification_type == &#39;created&#39; %}
  5.                 &lt;a href=&quot;#&quot;&gt;{{notification.ticket.name}}: A new ticket has been assigned to you.&lt;/a&gt;
  6.               {% else %}
  7.                 &lt;a href=&quot;#&quot;&gt;{{notification.ticket.name}}: The ticket has been updated.&lt;/a&gt;
  8.               {% endif %}
  9.             {% endfor %}
  10.           {% else %}
  11.             &lt;a href=&quot;#&quot;&gt;No new notifications&lt;/a&gt;
  12.           {% endif %}
  13. &lt;/div&gt;

models.py for notification

  1. class Notification(models.Model):
  2.     OPTIONS = (
  3.         (&#39;created&#39;, &#39;created&#39;),
  4.         (&#39;updated&#39;, &#39;updated&#39;),
  5.     )
  6.     
  7.     recipient = models.ForeignKey(CustomUser, on_delete=models.SET_NULL, null=True, related_name=&#39;notifications&#39;)
  8.     ticket = models.ForeignKey(Ticket, on_delete=models.SET_NULL, null=True, related_name=&#39;notifications&#39;)
  9.     message = models.TextField()
  10.     notification_type = models.CharField(choices=OPTIONS, max_length=15, null=True)
  11.     is_read = models.BooleanField(default=False)
  12.     created = models.DateTimeField(auto_now_add=True)

signals.py for notification

  1. @receiver(post_save, sender=Ticket)
  2. def create_notification(sender, instance, created, **kwargs):
  3.     if created:
  4.         notification_type = &#39;created&#39;
  5.     else:
  6.         notification_type = &#39;updated&#39;
  7.         
  8.     assignees = instance.assignee.all()
  9.     for assignee in assignees:
  10.         Notification.objects.create(recipient=assignee, notification_type=notification_type)

this is createTicket function inside the views.py

  1. @login_required
  2. def createTicket(request):
  3.     form = TicketForm()
  4.     
  5.     categories = Category.objects.all()
  6.     users = CustomUser.objects.all()
  7.     if request.method == &#39;POST&#39;:
  8.         category_name = request.POST.get(&#39;category&#39;)
  9.         category, created = Category.objects.get_or_create(name=category_name)
  10.         
  11.         # Retrieve the project object that the ticket should be connected with
  12.         project_id = request.POST.get(&#39;project&#39;)
  13.         project = Project.objects.get(id=project_id)
  14.         
  15.         # Retrieve the list of selected users from the form
  16.         assignee_ids = request.POST.getlist(&#39;assignee&#39;)
  17.         assignee = CustomUser.objects.filter(id__in=assignee_ids)
  18.         
  19.         ticket = Ticket.objects.create(
  20.             host = request.user,
  21.             category=category,
  22.             project=project,
  23.             name=request.POST.get(&#39;name&#39;),
  24.             status=request.POST.get(&#39;status&#39;),
  25.             priority=request.POST.get(&#39;priority&#39;),
  26.             type=request.POST.get(&#39;type&#39;),
  27.             description=request.POST.get(&#39;description&#39;),
  28.         )
  29.         
  30.         # Add the selected users to the ticket
  31.         ticket.assignee.set(assignee)
  32.         ticket.save()
  33.         
  34.         return redirect(&#39;ticket&#39;, pk=ticket.id)
  35.     
  36.     context = {&#39;form&#39;: form, &#39;categories&#39;: categories, &#39;users&#39;: users}
  37.     return render(request, &#39;tickets/ticket_form.html&#39;, context)

答案1

得分: 0

  1. ticket = Ticket.objects.create(
  2.             host=request.user,
  3.             category=category,
  4.             project=project,
  5.             name=request.POST.get('name'),
  6.             status=request.POST.get('status'),
  7.             priority=request.POST.get('priority'),
  8.             type=request.POST.get('type'),
  9.             description=request.POST.get('description'),
  10.         )
  11.         
  12.         # 将选择的用户分配给工单
  13.         ticket.assignee.set(assignee)
  14.         ticket.save()

这将触发两次信号，一次是create，另一次是save。

你不需要最后一行，只需要写：

  1. ticket.assignee.set(assignee)

就足够了。

另外，当你创建工单并且信号触发时，你还没有assignee，你应该通过m2m_changed信号来实际处理它。

  2. <details>
  3. <summary>英文:</summary>

ticket = Ticket.objects.create(
host = request.user,
category=category,
project=project,
name=request.POST.get('name'),
status=request.POST.get('status'),
priority=request.POST.get('priority'),
type=request.POST.get('type'),
description=request.POST.get('description'),
)

  1.     # Add the selected users to the ticket
  2.     ticket.assignee.set(assignee)
  3.     ticket.save()
  2. This will trigger your signals twice, 1 for `create` and another one for `save`.
  4. You don&#39;t need the last line, just put

ticket.assignee.set(assignee)

  1. is enough.
  3. Btw when you create a ticket and signal triggers, you don&#39;t have any `assignee` yet, you should actually do it via [m2m_changed][1] signal
  6.   [1]: https://docs.djangoproject.com/en/4.1/ref/signals/#m2m-changed
  8. </details>

huangapple
  • 本文由 发表于 2023年2月6日 08:52:58
  • 转载请务必保留本文链接：https://go.coder-hub.com/75356529.html
  • django
  • django-templates
  • django-views
  • python
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