针对我目前面临的问题,我有两个问题:
django 中的最佳实践是覆盖 CreateView 中的 post 方法吗?如果不是,您是否在 CategoryFullForm 或 CreateView 中编写 form _valid 函数,它会是什么样子? CreateView 目前效果很好,但希望确保没有更好的方法来做到这一点。
如果这是最佳实践,您将如何覆盖 UpdateView 中的 get 函数,以便能够编辑与正在上传的实例相关的文件,甚至添加其他文件?也可以采用其他方式来完成这项任务。
模型.py
############ CATEGORY MODEL ################
class Category(models.Model):
category_id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100, null=True, blank=True)
est_pr_sqft = models.FloatField(blank=True)
est_duration = models.IntegerField(blank=True)
preceding_job = models.CharField(max_length=100, blank=True)
category_notes = models.CharField(max_length=250, blank=True)
category_slug = models.SlugField(max_length=100, unique=True, null=False)
author = models.ForeignKey(User, on_delete=models.CASCADE, default=1)
date_posted = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
def __str__(self):
return self.name
def get_absolute_url(self):
return reverse('category-detail', kwargs={'slug': self.category_slug})
def save(self, *args, **kwargs):
if not self.category_slug:
self.category_slug = slugify(self.name)
return super().save(*args, **kwargs)
class CategoryFiles(models.Model):
category_id = models.ForeignKey(Category, on_delete=models.CASCADE)
document = models.FileField(upload_to="attachments",null=True,blank=True)
uploaded_date = models.DateTimeField(auto_now_add=True)
modified_date = models.DateTimeField(auto_now=True)
def delete(self, *args, **kwargs):
self.document.delete()
return super().delete(*args, **kwargs)
forms.py
class CategoryForm(forms.ModelForm):
class Meta:
model = Category
fields = ['name', 'est_pr_sqft', 'est_duration', 'preceding_job', 'category_notes']
class CategoryFullForm(CategoryForm):
files = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}),required=False)
class Meta(CategoryForm.Meta):
fields = CategoryForm.Meta.fields + ['files']
views.py
####### CATEGORY VIEWS ########
class CategoryListView(LoginRequiredMixin, ListView):
model = Category
template_name = 'ProjectManagementApp/PM-Category-List.html'
context_object_name = 'categories'
slug_field = 'project_slug'
success_url = reverse_lazy('Category-list')
class CategoryDetailView(LoginRequiredMixin, DetailView):
model = Category
template_name = 'ProjectManagementApp/PM-Category-Detail.html'
slug_field = 'category_slug'
def get_context_data(self, **kwargs):
context = super(CategoryDetailView, self).get_context_data(**kwargs)
context['files'] = CategoryFiles.objects.all()
#context['photos'] = CategoryPhotos.objects.all()
return context
class CategoryCreateView(LoginRequiredMixin, CreateView):
model = Category
form_class = CategoryFullForm
template_name = 'ProjectManagementApp/PM-Category-Create.html' # Replace with your template.
#success_url = reverse_lazy('category-detail')
slug_field = 'category_slug'
def post(self, request, *args, **kwargs):
form_class = self.get_form_class()
form = self.get_form(form_class)
files = request.FILES.getlist('files')
if form.is_valid():
author = request.user
name = form.cleaned_data['name']
est_pr_sqft = form.cleaned_data['est_pr_sqft']
est_duration = form.cleaned_data['est_duration']
preceding_job = form.cleaned_data['preceding_job']
category_notes = form.cleaned_data['category_notes']
category_obj = Category.objects.create(name=name,est_pr_sqft=est_pr_sqft,est_duration=est_duration,preceding_job=preceding_job,category_notes=category_notes,author=author)
for f in files:
CategoryFiles.objects.create(category_id=category_obj,document=f)
return HttpResponseRedirect(reverse_lazy('Category-list'))
else:
return self.form_invalid(form)
class CategoryUpdateView(LoginRequiredMixin, UpdateView): #UserPassesTestMixin - makes sure user who made entry is only one who can update it.
model = Category
form_class = CategoryFullForm
template_name = 'ProjectManagementApp/PM-Category-Create.html' # Replace with your template.
slug_field = 'category_slug'
success_url = reverse_lazy('Category-list')
def post(self, request, *args, **kwargs):
form_class = self.get_form_class()
form = self.get_form(form_class)
files = request.FILES.getlist('files')
if form.is_valid():
author = request.user
name = form.cleaned_data['name']
est_pr_sqft = form.cleaned_data['est_pr_sqft']
est_duration = form.cleaned_data['est_duration']
preceding_job = form.cleaned_data['preceding_job']
category_notes = form.cleaned_data['category_notes']
category_obj = Category.objects.create(name=name,est_pr_sqft=est_pr_sqft,est_duration=est_duration,preceding_job=preceding_job,category_notes=category_notes,author=author)
for f in files:
CategoryFiles.objects.create(category_id=category_obj,document=f)
return HttpResponseRedirect(reverse_lazy('Category-list'))
else:
return self.form_invalid(form)
#
# #Doesnt allow you to update other users post
# #def test_func(self):
# # project = self.get_object()
# # if self.request.user == post.author:
# # return True
# # return False
#
#
def form_valid(self,form):
form.instance.author = self.request.user
return super().form_valid(form)
class CategoryDeleteView(LoginRequiredMixin, DeleteView): #UserPassesTestMixin - makes sure user who made entry is only one who can update it.
model = Category
template_name = 'ProjectManagementApp/PM-Category-Delete.html'
slug_field = 'category_slug'
success_url = reverse_lazy('Category-list')
#Doesnt allow you to delete other users post
#def test_func(self):
# project = self.get_object()
# if self.request.user == post.author:
# return True
# return False
如果需要 urls.py/admin.py 我很乐意提供,但我认为不需要它们,以及任何 html 文件。