在一个 html 表单中处理多个模型表单
Handle multiple modelforms in one html form
用户将拥有与其特定相册相关的照片。
这就是模型:
class Album(models.Model):
user = models.ForeignKey(User)
title = models.CharField(max_length=200)
pub_date = models.DateTimeField(auto_now_add=True, auto_now=False)
update = models.DateTimeField(auto_now_add=False, auto_now=True)
class Photo(models.Model):
photo_privacy = models.CharField(max_length=1,choices=PRIVACY, default='F')
user = models.ForeignKey(User)
caption = models.TextField()
image = models.ImageField(upload_to=get_upload_file_name)
pub_date = models.DateTimeField(auto_now_add=True, auto_now=False)
Views.py:
def create_album(request, user_name):
user = User.objects.get(username=unquote(user_name))
if request.method=='POST':
pform = AlbumPhotoForm(request.POST, request.FILES)
aform = AlbumForm(request.POST)
p_valid = pform.is_valid()
a_valid = aform.is_valid()
if p_valid and a_valid:
photo = pform.save(commit=False)
album = aform.save(commit=False)
photo.user = user
album.user = user
album.save()
photo.album = album
photo.save()
return HttpResponseRedirect('/'+user.username+'/photos')
else:
return render(request, 'create_album.html',{
'pform':pform,
'aform':aform
})
else:
pform = AlbumPhotoForm()
aform = AlbumForm()
return render(request, 'create_album.html', {
'pform':pform,
'aform':aform
})
和表格:
<form action="/{{ user.username }}/create_album/" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ aform.as_p }}
{{ pform.as_p }}
<input type="submit" value="Create and Upload Album"/>
</form>
如果我只需要用那个表格上传一个文件(照片),这很好用。
更新:
但是我想做的是,显示至少三个用于将照片上传到新相册的输入:
<form action="/{{ user.username }}/create_album/" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ aform.as_p }}
{{ pform.as_p }}
{{ pform.as_p }}
{{ pform.as_p }}
<input type="submit" value="Create and Upload Album"/>
</form>
这样做时,只会保存最后一个 pform
。其他两个 pform
被忽略。如何相应地保存所有三种形式的照片 (pform
)?
或者有其他办法吗?非常感谢您的帮助!谢谢。
使用formsets。他们做的正是你想要的:
from django.forms.models import formset_factory
PhotoFormSet = formset_factory(AlbumPhotoForm, can_delete=False,
min_num=1, validate_min=True,
max_num=3, validate_max=True,
extra=3)
def create_album(request, user_name):
user = User.objects.get(username=unquote(user_name))
if request.method=='POST':
form = AlbumForm(request.POST)
formset = PhotoFormSet(request.POST, request.FILES)
if all([form.is_valid(), formset.is_valid()]):
album = form.save(commit=False)
album.user = user
album.save()
for photo_form in formset:
if photo_form.cleaned_data:
photo = photo_form.save(commit=False)
photo.album = album
photo.user = user
photo.save()
return redirect('/%s/photos' % user.username )
else:
form = AlbumForm()
formset = PhotoFormSet()
return render(request, 'create_album.html',
{'form': form, 'formset': formset})
模板可能如下所示:
<form action="." method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<table>
{{ formset }}
</table>
<input type="submit" value="Create and Upload Album"/>
</form>
用户将拥有与其特定相册相关的照片。
这就是模型:
class Album(models.Model):
user = models.ForeignKey(User)
title = models.CharField(max_length=200)
pub_date = models.DateTimeField(auto_now_add=True, auto_now=False)
update = models.DateTimeField(auto_now_add=False, auto_now=True)
class Photo(models.Model):
photo_privacy = models.CharField(max_length=1,choices=PRIVACY, default='F')
user = models.ForeignKey(User)
caption = models.TextField()
image = models.ImageField(upload_to=get_upload_file_name)
pub_date = models.DateTimeField(auto_now_add=True, auto_now=False)
Views.py:
def create_album(request, user_name):
user = User.objects.get(username=unquote(user_name))
if request.method=='POST':
pform = AlbumPhotoForm(request.POST, request.FILES)
aform = AlbumForm(request.POST)
p_valid = pform.is_valid()
a_valid = aform.is_valid()
if p_valid and a_valid:
photo = pform.save(commit=False)
album = aform.save(commit=False)
photo.user = user
album.user = user
album.save()
photo.album = album
photo.save()
return HttpResponseRedirect('/'+user.username+'/photos')
else:
return render(request, 'create_album.html',{
'pform':pform,
'aform':aform
})
else:
pform = AlbumPhotoForm()
aform = AlbumForm()
return render(request, 'create_album.html', {
'pform':pform,
'aform':aform
})
和表格:
<form action="/{{ user.username }}/create_album/" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ aform.as_p }}
{{ pform.as_p }}
<input type="submit" value="Create and Upload Album"/>
</form>
如果我只需要用那个表格上传一个文件(照片),这很好用。
更新:
但是我想做的是,显示至少三个用于将照片上传到新相册的输入:
<form action="/{{ user.username }}/create_album/" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ aform.as_p }}
{{ pform.as_p }}
{{ pform.as_p }}
{{ pform.as_p }}
<input type="submit" value="Create and Upload Album"/>
</form>
这样做时,只会保存最后一个 pform
。其他两个 pform
被忽略。如何相应地保存所有三种形式的照片 (pform
)?
或者有其他办法吗?非常感谢您的帮助!谢谢。
使用formsets。他们做的正是你想要的:
from django.forms.models import formset_factory
PhotoFormSet = formset_factory(AlbumPhotoForm, can_delete=False,
min_num=1, validate_min=True,
max_num=3, validate_max=True,
extra=3)
def create_album(request, user_name):
user = User.objects.get(username=unquote(user_name))
if request.method=='POST':
form = AlbumForm(request.POST)
formset = PhotoFormSet(request.POST, request.FILES)
if all([form.is_valid(), formset.is_valid()]):
album = form.save(commit=False)
album.user = user
album.save()
for photo_form in formset:
if photo_form.cleaned_data:
photo = photo_form.save(commit=False)
photo.album = album
photo.user = user
photo.save()
return redirect('/%s/photos' % user.username )
else:
form = AlbumForm()
formset = PhotoFormSet()
return render(request, 'create_album.html',
{'form': form, 'formset': formset})
模板可能如下所示:
<form action="." method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<table>
{{ formset }}
</table>
<input type="submit" value="Create and Upload Album"/>
</form>