django updateview表单相关模型答案

【问题标题】：django updateview form related modeldjango updateview表单相关模型
【发布时间】：2021-05-29 11:03:31
【问题描述】：

我的 models.py 文件为

class Post(models.Model):
    title = models.CharField(max_length=256)
    body = models.TextField()
    category = models.ManyToManyField("PostCategory", blank=True)

class PostImages(models.Model):
    image = models.ImageField(upload_to="..")
    post = models.ForeignKey("Post", on_delete=models.CASCADE, related_name="images")

和forms.py

class UpdateBlogForm(forms.ModelForm):
    class Meta:
        model = Post
        fields = "__all__"
        exclude = ("blogger", "view")
        widgets = {
            "language": forms.Select(attrs={"class": "form-control"}),
            "title": forms.TextInput(attrs={"class": "form-control"}),
            "body": forms.Textarea(attrs={"row": "25", "class": "form-control"}),
        }

我有一个 updateview 作为

class BlogPostUpdateView(generic.UpdateView):
    model = Post
    form_class = UpdateBlogForm
    success_url = "."
    template_name = "blog/dashboard_components/blog_dashboard_eidtpost.html"

在 updateview 我只有我的 UpdateBlogForm 表单，可以通过任何方式编辑帖子相关图像（添加/删除）。知道如何继续吗？！

【问题讨论】：

标签： python django django-views django-forms

【解决方案1】：

我使用 inlineformset_factory 实现 forms.py

...
from django.forms import inlineformset_factory

...
ImagesFormSet = inlineformset_factory(
    Post,
    PostImages,
    fields=("image",),
    extra=4,
    max_num=4,
    widgets={
        "image": forms.FileInput(attrs={"class": "form-control col-md-4 col-sm-4 d-inline"}),
    },
    labels={
        "image": "",
    },
)

在我的views.py 中发送 ImagesFormSet 和get_context_data as

from .forms import UpdateBlogForm, ImagesFormSet

...
class BlogUpdateView(generic.UpdateView):
    model = Post
    form_class = UpdateBlogForm
    success_url = "."
    template_name = "blog/dashboard_components/blog_dashboard_eidtpost.html"

    def get_context_data(self, **kwargs):
        context = super(BlogUpdateView, self).get_context_data(**kwargs)
        context["images_form"] = ImagesFormSet(instance=get_object_or_404(Post, id=2))
        return context

最后在我的模板中以 images_form 的形式访问了 ImagesFormSet。

【讨论】：