我正在构建一个项目,您可以在其中创建和加入组。然而,我似乎无法弄清楚如何显示加入按钮的逻辑,如果用户没有加入,并且如果他们有,则不加入。我附加了模型和group.html页面。请让我知道如何在group.html文件中执行此操作。Python如何检查用户是否在组中查看页面
谢谢。
models.py
from django.db import models
class User(models.Model):
first_name = models.TextField(blank=False, max_length=20)
last_name = models.TextField(blank=False, max_length=20)
email = models.TextField(blank=False, max_length=20)
password = models.TextField(blank=False, max_length=20)
counter = models.IntegerField(blank=False, null=True)
class Group(models.Model):
name = models.TextField(blank=False, max_length=50)
description = models.TextField(blank=False, max_length=200)
created_at = models.DateField()
updated_at = models.DateField()
creator = models.ForeignKey(User, related_name="creator")
members = models.ManyToManyField(User, related_name="members")
counter = models.IntegerField(blank=False, null=True)
class Meta:
db_table = 'groups'
groups.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>On Group {{group.id}}</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<br>
<a href="/logout">Logout</a>
<span>|</span>
<a href="/dashboard">Dashboard</a>
<form action="/leave" method="post">
{%csrf_token %}
<input type="hidden" name="user_id" value="{{ request.session.user_id }}">
<input type="hidden" name="group_id" value="{{ group.id }}">
<input type="submit" value="Leave">
</form>
<form action="/join" method="post">
{%csrf_token %}
<input type="hidden" name="user_id" value="{{ request.session.user_id }}">
<input type="hidden" name="group_id" value="{{ group.id }}">
<input type="submit" value="Join">
</form>
<table class="table class table-striped table-bordered table-hovered table-hover">
<thead>
<tr>
<th>Group Name</th>
<th>Group Description</th>
<th>Group Members</th>
<th>Group Creator</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{group.name }}</a></td>
<td>{{group.description}}</td>
<td>{{group.members.count}}</td>
{% if group.creator.id == request.session.user_id %}
<td>You</td>
{% else %}
<td>{{group.creator.first_name}}</td>
{% endif %}
</tr>
</tbody>
</table>
<h4>Members</h4>
<table class="table class table-striped table-bordered table-hovered table-hover">
<thead>
<tr>
<th>Member First Name</th>
<th>Member Last Name</th>
</tr>
</thead>
<tbody>
{% for member in group.members.all %}
<tr>
<td>{{member.first_name}}</td>
<td>{{member.last_name}}</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</body>
</html>
什么是可变成员?一个元组?一个列表?一个字符串? –
这是我猜的QuerySet。 –