/hello/urls.py
urlpatterns = [
path('', views.index, name='index'),
path('create', views.create, name='create'),
path('edit/<int:num>', views.edit, name='edit'),
]
/hello/templates/hello/create.html
<body class="container">
<h1 class="display-4 text-primary">{{title}}</h1>
<table class="table">
<tr>
<th>data</th>
</tr>
{% for item in data %}
<tr>
<td>{{item}}</td>
<td><a href="{% url 'edit' item.id %}">Edit</a></td>
</tr>
{% endfor %}
</table>
</body>
– url ‘edit’ item.idで/edit/1というようにアクセスできるようになる
edit.htmlを作る
/hello/templates/hello/edit.html
<body class="container">
<h1 class="display-4 text-primary">{{title}}</h1>
<form action="{% url 'edit' id %}" method="post">
{% csrf_token %}
<table class="table">
{{ form.as_table }}
<tr>
<td></td>
<td><input type="submit" value="click" class="btn btn-primary mt-2"></td>
</tr>
</table>
</form>
</body>
edit関数を作る
/hello/views.py
# edit
def edit(request, num):
obj = Friend.objects.get(id=num)
if(request.method == 'POST'):
friend = FriendForm(request.POST, instance=obj)
friend.save()
return redirect(to='/hello')
params = {
'title': 'Hello',
'id': num,
'form': FriendForm(instance=obj),
}
return render(request, 'hello/edit.html', params)


引っ張る時は、’form’: FriendForm(instance=obj),として、updateの時はFriendForm(request.POST, instance=obj)とするのか。なお、createの時はobj = Friend()