我正在使用基于类的视图,到目前为止一切顺利。 最近,我遇到了一些我无法理解的逻辑或代码相关问题。
我有一个html文件,我想在其中传递或显示两个模型:
PhotographyData
和Pictures
。我可以成功使用两个不同的ListView
传递模型。但是Pictures ListView不会显示任何数据,但是会显示对象ID。
类似地,我尝试创建一个PicturesDetailView
来检查数据库是否没有引起任何错误,即使在DetailView中也没有任何数据或ID传递。
views.py
class PhotographyListView(ListView):
model = PhotographyData
template_name = "projectfiles/PhotographyView.html"
def get_queryset(self):
return PhotographyData.objects.all()
class PicturesListView(ListView):
model = Pictures
template_name = "projectfiles/PhotographyView.html"
queryset = Pictures.objects.all()
class PicturesDetail(DetailView):
model = Pictures
template_name = 'projectfiles/View.html'
models.py
class PhotographyData(models.Model):
photography_pkg_name = models.CharField(
"Photography package", max_length=50)
photography_pic = models.ImageField(
upload_to='images', blank=False, null=False)
photography_price = models.SmallIntegerField(blank=False, null=False)
class Pictures(models.Model):
pic_name = models.CharField(max_length=50)
pic_caption = models.TextField()
date = models.DateTimeField(auto_now=False, auto_now_add=False)
location = models.CharField(max_length=50)
pic = models.ImageField(upload_to = 'Pictures', blank=False, null=False)
forms.py
class PhotographyForm(forms.ModelForm):
#overriding the required attribute
photography_pic = forms.ImageField(required=True)
class Meta:
model = PhotographyData
fields = ("photography_pkg_name",
"photography_price", "photography_pic")
class PicturesForm(forms.ModelForm):
# date = forms.DateField(
# widget=forms.DateInput(format=('%m/%d/%y'),
# attrs={'class': 'form-control',
# 'placeholder': ' Month/Date/Year'}))
class Meta:
model = Pictures
fields = ("pic_name", "pic_caption",
"date", "location", "pic")
widgets = {
# 'date': forms.DateTimeField(
# attrs={'placeholder': "Month/Date/Year:H:M" }
# ),
'pic_caption': forms.Textarea(
attrs={'class': 'form-control', 'placeholder': 'Caption', 'rows': 3, 'cols': 21})}
pic = forms.ImageField(required = True)
#'%m/%d/%Y % H: % M'
urls.py
from django.conf.urls.static import static
from django.conf import settings
from django.conf.urls import url
from . import views
from django.views.generic import *
from django.views import generic
from django.contrib.auth import views as auth_views
from .views import (
HomeView,
Food_CreateView,
Decor_CreateView,
Photography_CreateView,
FoodListView,
DecorListView,
PhotographyListView,
PicturesCreateView,
PicturesDetail)
urlpatterns = [
url(r'^(?i)home/$', HomeView.as_view(), name='Home-Page'),
url(r'^(?i)addpic/$', Photography_CreateView.as_view(), name='Add-Pic'),
url(r'^(?i)addabc/$', PicturesCreateView.as_view(), name='Add-Pic'),
url(r'^(?i)PhotoView/$', PhotographyListView.as_view(), name='Photo-View'),
url(r'^(?i)(?P<pk>[0-9]+)/$', PicturesDetail.as_view(), name='Pic-View'),
] + static(settings.MEDIA_URL,document_root=settings.MEDIA_ROOT)
View.html
<title>123</title>
{% include 'projectfiles/base.html' %}
ABC
<div class='collection'>
{% for x in object_list %}
<br>
ID:{{x.id}}<br>
NAME:{{x.pic_name}}<br>
DATE:{{x.date}}<br>
Location:{{x.location}}
Details:{{x.pic_caption}}
<img src="{{ i.pic.url }}" alt='Not found' width="124" height="124"/>
{% endfor %}
</div>
{% endblock asd %}
photography.html
<title>VIEW</title>
{% include 'projectfiles/base.html' %}
{% block asd %}
<div class='collection'>
{% for i in object_list %}
{{i.photography_pkg_name}}
{{i.photography_price}}
<a href=#> <img src="{{ i.photography_pic.url }}" alt='Not found' width="124" height="124"/></a>
{% endfor %}
</div>
<br>
<div class='collection'>
{% for x in object_list %}
ABC<br>
ID:{{x.id}}<br>
{% comment %} ID:<a href={% url 'Pic-View' x.id %}>{{x.id}}</a><br> {% endcomment %}
NAME:{{x.pic_name}}<br>
DATE:{{x.date}}<br>
Location:{{x.location}}
{% endfor %}
</div>
{% endcomment %}
{% endblock asd %}
我正在使用 Django表单将数据保存在数据库中,并且可以正常工作。
没有错误使您难以理解为什么数据无法正确传递。虽然已成功保存并显示在管理部分。
答案 0 :(得分:1)
这一切有点混乱。您有一个模板和一个URL,但是您似乎期望以某种方式调用两个视图。这根本不是它的工作原理:一个URL映射到一个视图。当然,多个视图可以使用相同的模板,但不能同时使用。
因为您的URL调用PhotographyListView,所以object_list
只会包含PhotographyData的实例。如果还要显示图片列表,则需要将其添加到视图上下文中:
class PhotographyListView(ListView):
model = PhotographyData
template_name = "projectfiles/PhotographyView.html"
def get_context_data(self, **kwargs):
kwargs['pictures'] = Pictures.objects.all()
return super().get_context_data(**kwargs)
,现在在模板中,第二个循环可以是{% for x in pictures %}
。
(尽管,再次,我无法真正理解为什么要使用这两个单独的列表。也许想要在Picture和PhotographyData之间建立某种关系?如果需要,例如,需要一个ForeignKey。)