如何在Django中显示收藏夹列表

问题描述

我有一个收藏夹列表，当我单击该列表后单击兴趣按钮时，我想显示它们，我的心会加粗。第二部分（即填充心脏）正确完成，但是当我想显示列表时，它什么也没有显示，并出现以下错误。

Reverse for 'show_Book' not found. 'show_Book' is not a valid view function or pattern name.

model.py

class Book (models.Model):
    BookID= models.AutoField(primary_key=True)
    Titel=models.CharField(max_length=150 )
    Author=models.ForeignKey('Author',on_delete=models.CASCADE)
    Publisher=models.ForeignKey('Publisher',on_delete=models.CASCADE)      translator=models.ForeignKey('Translator',null='true',blank='true',on_delete=models.SET_NULL)
    favorit=models.ManyToManyField('orderapp.Customer',related_name='favorit',blank=True)
    

view.py

def show_Book(request,BookID):
    showBook=get_object_or_404(Book,BookID=BookID)
    is_favorite=False
        if showBook.favorit.filter(id=request.user.id).exists():
        is_favorite=True
    return render (request,'showBook.html',{'is_favorite':is_favorite,})

def favoritbook (request,BookID=BookID)
    if showBook.favorit.filter(id=request.user.id).exists():
        showBook.favorit.remove(request.user)
    else:
        showBook.favorit.add(request.user)
    return HttpResponseRedirect(request.META.get('HTTP_REFERER'))


def favoritlist(request):
    user=request.user
    favoritbooks=user.favorit.all()
    context={'favoritbooks':favoritbooks}
    return render (request,'favotritlist.html',context)

url.py

path('showbookstor/<int:id>',views.show_BookStor,name='show_BookStor'),path('books/favorit/<int:BookID>/',views.favoritbook,name='favoritbook'),path('books/favorit/',views.favoritlist,name='favoritlist'),

showbook.html

{% if is_favorite %}
    <li id="sell"><a href="{% url 'favoritbook' showBook.BookID %}">add to favorit <i class="fas fa-heart"></i></a> </li>
{% else %}
    <li id="sell"><a href="{% url 'favoritbook' showBook.BookID %}"> delete favorit <i class="far fa-heart"></i></a>    </li>
{% endif %}

favoritlist.html

{% for Book in favoritbooks %}
    <section id="card" class="col-md-6 col-lg-3 col-sm-6 col-xs-12">
    <a href="{% url 'show_Book' Book.BookID %}"><img src= {{Book.Image.url}}></a>
    <h1 id="bookname">{{Book.Titel}}</h1>
                        
    <p>{{Book.Author}}</p>
    </section>
{% endfor %}

解决方法

您使用{% url 'show_Book' Book.BookID %}，但是您在urls.py中没有名称为show_Book的任何定义

path('showbookstor/<int:id>',views.show_BookStor,name='show_BookStor')

到

path('showbook/<int:id>',views.show_Book,name='show_Book')