Question

我的应用有问题。宠物店应用程序。

我创建了2个表单。 First表单允许用户创建自己的商店并将数据保存到我成功完成的模型中，第二个表单允许用户将自己的宠物添加到宠物商店。

第一个表单是成功的，因为它已经正确验证但我的第二个表单没有成功验证，因为在PetForm中，我有一个名为image = forms.FileField（）的字段，用户可以上传他们的宠物的图片和验证失败，因为图片无法保存。

我试图在image = forms.FileField（upload_to =“images /”）中加入一个参数但是我收到了一个错误

__init__() got an unexpected keyword argument 'upload_to'

我正在阅读文档，并说明“当我在表单中使用FileField时，您还必须记住将文件数据绑定到表单。”。

我无法理解文件数据的绑定。

有人可以帮助我！

我的forms.py

from django import forms
from pet.models import Store
from pet.models import Pet

class StoreForm(forms.ModelForm):
    name = forms.CharField(max_length =20,widget =forms.Textarea)
    number = forms.CharField(max_length =20,widget =forms.Textarea)
    address = forms.CharField(max_length = 20,widget = forms.Textarea)

    class Meta: 
        model = Store
        fields = ('name','number','address')

class PetForm(forms.ModelForm):
    animal =forms.CharField(max_length = 20,widget = forms.Textarea)
    description =forms.CharField(max_length =20, widget = forms.Textarea)
    owner = forms.ModelChoiceField(queryset=Store.objects.all())
    image = forms.FileField()

    class Meta:
        model = Pet
        fields = ('animal','description','owner','image')

我的models.py

from django.db import models

class Store(models.Model):
    name = models.CharField(max_length = 20)
    number = models.BigIntegerField()
    address =models.CharField(max_length = 20)
    def __unicode__(self):
        return self.name

class Pet(models.Model):
    animal = models.CharField(max_length =20)
    description = models.TextField()
    owner = models.ForeignKey(Store)
    image = models.FileField(upload_to="images/",blank=True,null=True)

    def __unicode__(self):
        return self.animal

这是我的views.py

的一部分

从django.core.files.uploadedfile导入导入SimpleUploadedFile

def fan(request): # this is the function that saves my form into my models.
    form = PetForm(request.POST or None)
    if form.is_valid():
        dad = form.save(commit=False)
        dad.save()
        if 'cat' in request.POST:
            cat = request.POST['next']
        else:
            cat = reverse('world:index')
        return HttpResponseRedirect(cat)
    return render_to_response(
        'fan.html',
        {'form':PetForm()},
        context_instance = RequestContext(request)
)

和我的fan.html

<form method="POST" "action">{% csrf_token %}
    <ul>
        {{ form.as_ul }}
    </ul>
    <input type = "submit" value= "Add Pets to Store" />
</form>

Answer 1

因为您覆盖了宠物模型图像。删除表单中的图像。

class PetForm(forms.ModelForm):
    animal =forms.CharField(max_length = 20,widget = forms.Textarea)
    description =forms.CharField(max_length =20, widget = forms.Textarea)
    owner = forms.ModelChoiceField(queryset=Store.objects.all())

    class Meta:
        model = Pet
        fields = ('animal','description','owner','image')

//It's not necessary to defined again model field in the form. Once you call the model 
//in the form it's understood what you want to show. You can only defined the model 
//field again if you want something to add or embed in that field. Like for example you
//want to change the charfield in to textarea or you defined a queryset like you did 
//above. Erase your max_length because you are already defined that in the model.

上传图片时，请不要忘记在表格中添加“multipart / form-data”

<form method="POST" enctype="multipart/form-data" "action" >
    {% csrf_token %}
    <ul>
        {{ form.as_ul }}
    </ul>
    <input type = "submit" value= "Add Pets to Store" />
</form>

form.FileField（）中的Django错误

1 个答案: