大家好！ 我正在尝试使用某种字段创建保存表单，其中每个字段都有自己的标签，只有一个。
但是当我保存表单时，我有一个字段不保存一个标签，而是一次保存两个标签。虽然这不应该。请帮我解决问题。
/models.py
class Post(models.Model): # Books
user = models.ForeignKey(User, on_delete=models.CASCADE)
image = VersatileImageField(
'Image',
upload_to='media_my/',null=True,
blank=True
)
title = models.CharField(max_length=150, db_index=True)
slug = models.SlugField(max_length=150, unique=True, blank=True)
tags = models.ManyToManyField('Tag', blank=True, related_name='posts')
b1 = models.ManyToManyField('B1', blank=False, related_name='bo1')
b2 = models.ManyToManyField('B2', blank=False, related_name='bo2')
b3 = models.ManyToManyField('B3', blank=False, related_name='bo3')
b4 = models.ManyToManyField('B4', blank=False, related_name='bo4')
date_pub= models.DateTimeField(auto_now_add=True)
def get_absolute_url(self):
return reverse('post_detail_url', kwargs={'slug':self.slug})
def save(self, *args, **kwargs):
if not self.id:
self.slug= gen_slug(self.title)
super().save(*args, **kwargs)
def __str__(self):
return self.title
class Meta:
ordering = ['-date_pub']
class Tag(models.Model): # Tags of books
title=models.CharField(max_length=50)
slug=models.SlugField(max_length=50, unique=True)
def get_absolute_url(self):
return reverse('tag_detail_url', kwargs={'slug': self.slug})
def __str__(self):
return self.title
class B1(models.Model):
b1 = models.CharField(max_length=286)
tags = models.ManyToManyField('Tag', blank=True, related_name='t1')
date_save= models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.b1
class B2(models.Model):
b2 = models.CharField(max_length=286)
tags = models.ManyToManyField('Tag', blank=True, related_name='t2')
date_save= models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.b2
class B3(models.Model):
b3 = models.CharField(max_length=286)
tags = models.ManyToManyField('Tag', blank=True, related_name='t3')
date_save= models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.b3
class B4(models.Model):
b4 = models.CharField(max_length=286)
tags = models.ManyToManyField('Tag', blank=True, related_name='t4')
date_save= models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.b4
/forms.py
class TagForm(forms.ModelForm):
class Meta:
model = Tag
fields = ['title','slug']
widgets= {
'title':forms.TextInput(attrs={'class':'form-control'}),
'slug':forms.TextInput(attrs={'class':'form-control'}),
}
def clean_slug(self):
new_slug=self.cleaned_data['slug'].lower()
if new_slug== 'create':
raise ValidationError('Slug may not be "Create"')
if Tag.objects.filter(slug__iexact=new_slug).count():
raise ValidationError('Slug must be unique. We have "{}" slug already'.format(new_slug))
return new_slug
class PostForm(forms.ModelForm):
class Meta:
model = Post
fields = [ 'image','title','tags']
widgets = {
'image':forms. ClearableFileInput(attrs={'class':'form-control'}),
'title': forms.TextInput(attrs={'class':'form-control'}),
'tags': forms.SelectMultiple(attrs={'class':'form-control'}),
}
def clean_slug(self):
new_slug = self.cleaned_data['slug'].lower()
if new_slug =='create':
raise ValidationError('Slug may not be "Create"')
return new_slug
class B1Form(forms.ModelForm):
class Meta:
model = B1
fields = ['b1','tags']
widgets = {
'b1': forms.TextInput(attrs={'class':'form-control'}),
'tags': forms.SelectMultiple(attrs={'class':'form-control'}),
}
class B2Form(forms.ModelForm):
class Meta:
model = B2
fields = [ 'b2','tags']
widgets= {
'b2': forms.TextInput(attrs={'class':'form-control'}),
'tags': forms.SelectMultiple(attrs={'class':'form-control'}),
}
class B3Form(forms.ModelForm):
class Meta:
model = B3
fields = [ 'b3','tags']
widgets= {
'b3': forms.TextInput(attrs={'class':'form-control'}),
'tags': forms.SelectMultiple(attrs={'class':'form-control'}),
}
class B4Form(forms.ModelForm):
class Meta:
model = B4
fields = [ 'b4']
widgets= {
'b4': forms.TextInput(attrs={'class':'form-control'}),
}
/ HTML
{% extends 'face/base_face.html'%}
{% block title %}
Create Post - {{ block.super}}
{% endblock %}
{% block content %}
<form class="" action="{% url 'post_create_url' %}" method="post" enctype="multipart/form-data">
{% csrf_token%}
<!-- forma of Post -->
{% for field in form %}
<div class="form-group">
{% if field.errors %}
<div class="alert alert-danger">
{{ field.errors }}
</div>
{% endif %}
{{ field.label }}
{{ field }}
</div>
{% endfor %}
<!-- forma of B1 -->
{% for field in forma %}
<div class="form-group">
{% if field.errors %}
<div class="alert alert-danger">
{{field.errors}}
</div>
{% endif %}
{{ field.label }}
{{ field }}
</div>
{% endfor %}
<!-- forma of B2 -->
{% for field in formb %}
<div class="form-group">
{% if field.errors %}
<div class="alert alert-danger">
{{field.errors}}
</div>
{% endif %}
{{ field.label }}
{{ field }}
</div>
{% endfor %}
<!-- forma of B3 -->
{% for field in formc %}
<div class="form-group">
{% if field.errors %}
<div class="alert alert-danger">
{{field.errors}}
</div>
{% endif %}
{{ field.label }}
{{ field }}
</div>
{% endfor %}
<!-- forma of B4 -->
{% for field in formd %}
<div class="form-group">
{% if field.errors %}
<div class="alert alert-danger">
{{field.errors}}
</div>
{% endif %}
{{ field.label }}
{{ field }}
</div>
{% endfor %}
/utils.py
def get(self, request):
form= self.model_form()
forma= self.modb1()
formb= self.modb2()
formc= self.modb3()
formd= self.modb4()
context = {
'form':form,
'forma':forma,
'formb':formb,
'formc':formc,
'formd':formd,
}
return render (request, self.template, context)
def post(self, request):
bound_form = self.model_form(request.POST or None, request.FILES or None)
bp1=self.modb1(request.POST or None)
bp2=self.modb2(request.POST or None)
bp3=self.modb3(request.POST or None)
bp4=self.modb4(request.POST or None)
context = {'form':bound_form,'forma':bp1,
'formb':bp2,'formc':bp3,
'formd':bp4,}
if bound_form.is_valid() and bp1.is_valid() and bp2.is_valid() and bp3.is_valid() and bp4.is_valid():
new_obj=bound_form.save(commit=False)
new_obj.user = request.user
new_obj.b1.add(a)
new_obj.b2.add(b)
new_obj.b3.add(c)
new_obj.b4.add(d)
a=bp1.save()
b=bp2.save()
c=bp3.save()
d=bp4.save()
new_obj.save()
return redirect(new_obj)
请仔细查看forms.py中的代码 也许B1，B2，B3，B4字段中的标签不正确？