Question

我正在尝试显示我之前工作的post.html内的模型中的数据，但现在由于某些原因我无法理解。

urls.py

urlpatterns = [
    path('', ListView.as_view(
        queryset=Tutorials.objects.all().order_by("-date")[:25],
        template_name="tutorials/blog.html"
    )),

    path('<int:pk>', DetailView.as_view(
            model=Tutorials,
            template_name="tutorials/post.html")),
]

blog.html

{% block  python %}
    {% for Tutorials in object_list %}
        {% if Tutorials.categories == "pythonbasics" %}
            <a href="/tutorials/{{ Tutorials.id }}"><h1>{{ Tutorials.title }}</h1></a>
            <br>
            Created On : {{ Tutorials.date|date:"Y-m-d" }}
        {% endif %}
    {% endfor %}
{% endblock %}

post.html

{% block content %}
    <h3>{{ Tutorials.title }}</h3>

    <h6> on {{ Tutorials.datetime }}</h6>

    <div class = "code">
        {{ Tutorials.content|linebreaks }}
    </div>
{% endblock %}

Answer 1

您应该在模板中使用object名称：

{% block content %}
    <h3>{{ object.title }}</h3>

    <h6> on {{ object.datetime }}</h6>

    <div class = "code">
        {{ object.content|linebreaks }}
    </div>
{% endblock %}

或者，如果您想使用Tutorial变量，则需要将context_object_name=Tutorials传递给视图：

path('<int:pk>', DetailView.as_view(
            model=Tutorials,
            template_name="tutorials/post.html",
            context_object_name='Tutorials')),

Answer 2

加上@ neverwalkaloner的答案。

您可以使用Set lastA = cells(rows.count, "A").end(xlup) set R = range("A1", lastA) range("N2", cells(lastA.row, "N")).value = ...或object的原因是您继承context_object_name。

在DetailView中，它有DetailView方法。

get_object()

它将返回模型对象，您也可以覆盖此方法。

def get_object(self, queryset=None): """ Return the object the view is displaying. Require `self.queryset` and a `pk` or `slug` argument in the URLconf. Subclasses can override this to return any object. """ # Use a custom queryset if provided; this is required for subclasses # like DateDetailView if queryset is None: queryset = self.get_queryset() # Next, try looking up by primary key. pk = self.kwargs.get(self.pk_url_kwarg) slug = self.kwargs.get(self.slug_url_kwarg) if pk is not None: queryset = queryset.filter(pk=pk) # Next, try looking up by slug. if slug is not None and (pk is None or self.query_pk_and_slug): slug_field = self.get_slug_field() queryset = queryset.filter(**{slug_field: slug}) # If none of those are defined, it's an error. if pk is None and slug is None: raise AttributeError("Generic detail view %s must be called with " "either an object pk or a slug." % self.__class__.__name__) try: # Get the single item from the filtered queryset obj = queryset.get() except queryset.model.DoesNotExist: raise Http404(_("No %(verbose_name)s found matching the query") % {'verbose_name': queryset.model._meta.verbose_name}) return obj中的get()方法，

DetailView

如您所见，它将def get(self, request, *args, **kwargs): self.object = self.get_object() context = self.get_context_data(object=self.object) return self.render_to_response(context)定义为self.object，因此您可以在self.get_object()内使用self.object。

最后，由于DetailView，您可以在模板中使用object。

get_context_data()基本上将“对象”添加到上下文中，因此您可以使用它。

DetailView

CBV确实有一点学习曲线，但是当你看到django源代码并阅读有关文档时，它很容易理解。

+我强烈推荐ccbv.co.kr - 您可以看到CBV继承的视图和混合，以及它的方法。

无法在模板中显示模型中的数据

2 个答案: