我是 Django 和 Python 的新手。我为我的项目创建了一个博客,但是当尝试使用表单将博客文章添加到数据库时,我无法弄清楚如何使用发送按钮来实际更新数据库中的模型。我设法让它显示在视图中,但发送按钮是问题所在。
这是模型:
class BlogPost(models.Model):
title = models.CharField(max_length=250)
content = models.TextField()
post_author = models.CharField(max_length=30)
creation_date = models.DateTimeField(auto_now_add=True)
modification_date = models.DateTimeField(auto_now=True)
image = models.ImageField(upload_to='blog/files/blog_images')
categories = models.ManyToManyField('Category', related_name='posts') #Relaciona el atributo con la clase Category y permite usar category.posts
def __str__(self):
return self.title
class Meta:
verbose_name = "blog post"
verbose_name_plural = "blog posts"
这是表格:
class newPostForm(forms.Form):
title = forms.CharField(max_length=250)
content = forms.CharField(
widget=forms.Textarea()
)
image = forms.ImageField()
post_author = forms.CharField()
这是视图:
def new_post(request):
if request.method == "POST":
form = newPostForm(request.POST)
if form.is_valid():
info = form.cleaned_data()
new_post_info = BlogPost(
title=info["title"],
content=info["content"],
image=info["image"],
post_author=info["post_author"],
)
new_post_info.save()
return render(request, "")
else:
form = newPostForm()
return render(request, "blog/new_post.html", {"form":form})
我不知道您是否需要更多信息,请告诉我。预先感谢!
您的表单包含
ImageField
,这意味着它还需要访问 request.FILES
:
from django.shortcuts import redirect
def new_post(request):
if request.method == 'POST':
form = newPostForm(request.POST, request.FILES)
if form.is_valid():
info = form.cleaned_data()
new_post_info = BlogPost(
title=info['title'],
content=info['content'],
image=info['image'],
post_author=info['post_author'],
)
new_post_info.save()
return redirect('name-of-some-form')
else:
form = newPostForm()
return render(request, 'blog/new_post.html', {'form': form})
并通过在 HTML 表单中指定
enctype=""
对表单数据中的文件进行编码:
<form method="post" enctype="multipart/form-data">
{% csrf_token %}
<!-- … -->
</form>
不过,我强烈建议使用
ModelForm
,它将处理表单并自动保存:
class PostForm(forms.ModelForm):
class Meta:
model = BlogPost
fiels = ['title', 'content', 'image', 'post_author']
然后我们合作:
from django.shortcuts import redirect
def new_post(request):
if request.method == 'POST':
form = PostForm(request.POST, request.FILES)
if form.is_valid():
form.save()
return redirect('name-of-some-view')
else:
form = PostForm()
return render(request, 'blog/new_post.html', {'form': form})
[Django-doc] 实现 Post/Redirect/Get 模式[wiki]。 这可以避免您在用户刷新时发出相同的 POST 请求 浏览器。redirect