如何使用输入标签字段，而不是默认的Django? [英] how to use input tag field instead default django?
问题描述
我正在尝试建立一个在线订购系统.某人可以同时订购几件商品.因此，我使用了 inlineformset ，有时使用了 {{form.field_name}} 来防止某些样式和js事件，为此，我决定手动使用输入字段>< input> 标签，在我以前的项目中我没有遇到过这样的挑战.现在我很困惑如何实现它?
i'm trying to make an online order system. someone can order several items at the same time. for that reason i have used inlineformset and sometimes using {{form.field_name}} prevent some styles and js events , for that purpose i decided to use input fields manually <input> tags , i didnt faced such challenges in my previous projects. now im confused how to achieve it?
这是我的模特.py
class Item(models.Model):
items = models.CharField(max_length=50)
#others
def __str__(self):
return self.items
class Invoice(models.Model):
seller = models.ForeignKey(User,on_delete=models.CASCADE)
customer = models.CharField(max_length=50)
items = models.ManyToManyField(Item,through='ItemsInvoice')
class ItemsInvoice(models.Model):
invoice= models.ForeignKey(Invoice,on_delete=models.CASCADE)
item = models.ForeignKey(Item,on_delete=models.CASCADE)
quantity = models.IntegerField()
price = models.IntegerField()
我在视图中使用了基于函数的视图这是我的views.py
i used function based view in view and this is my views.py
@login_required
def createClientInoiveView(request):
item_names = Item.objects.all()
if request.method == 'POST':
customer = request.POST['customer']
seller = request.user
obj = CustomerInvoice.objects.create(seller=seller,customer=customer)
# inlineformset fields
item = request.POST['items']
quantity = request.POST['quantity']
price = request.POST['price']
cash = request.POST['cash']
discount = request.POST['discount']
items = InvoiceItem.objects.create(item=item,quantity=quantity,price=price,cash=cash,discount=discount)
with transaction.atomic():
obj = obj.save(commit=False)
if obj.is_valid and item.is_valid():
item.invoice = obj
obj.save()
item.save()
return redirect(reverse_lazy('invoiceapp:detail-invoice',kwargs={'pk':obj.pk}))
return render(request,'invoiceapp/create_invoice.html',{'item_names':item_names})
这是我的html表单
<form method="POST">{% csrf_token %}
{{items.management_form}}
<div class="w-full md:w-11/12 mx-auto realative p-2 bg-gray-200 wasll" style="direction: ltr !important;">
<div class="p-1 pr-2 pb-1 text-xs border border-black rounded-lg flex flex-wrap">
<div class="flex w-8/12 lg:w-9/12">
<div class="w-10/12 ml-8 border-b border-gray-600 border-dotted">
<input type="text" name="customer" class="bg-transparent w-full text-right focus:outline-none" id="">
</div>
<div class="">
: name
</div>
</div>
</div>
<!-- table -->
<div class="mt-1 border border-black">
<!-- header -->
<div class="flex flex-wrap grayBG text-sm text-white">
<div class="w-16 md:w-1/12 border-r text-center">
price
</div>
<div class="w-16 md:w-2/12 border-r text-center">
quantity
</div>
<div class="w-20 md:w-2/12 border-r text-center">
items
</div>
</div>
<!-- inputs -->
<div id="allInp">
<div class="flex flex-wrap grayBG text-sm text-black inp">
<div class="w-16 md:w-1/12 p-2 border-r text-center ">
<input type="number" name="price" onkeyup="totalSum()" class="rounded-lg nrx focus:outline-none py-1 w-full">
</div>
<div class="w-16 md:w-2/12 p-2 border-r text-center ">
<input type="number" name="quantity" onkeyup="totalSum()" class="rounded-lg focus:outline-none py-1 w-full">
</div>
<div class="w-20 md:w-2/12 p-2 border-r text-center">
<datalist id="types">
{% for i in item_names %}
<option value="{{i}}">
{% endfor %}
</datalist>
<input type="text" name="items" list="types" class="w-full rounded-lg focus:outline-none py-1">
</div>
</div>
</div>
</div>
</div>
<div class="w-6/12 text-center mt-1 mx-auto mb-6">
<button class="w-full bg-white text-gray-900" id="submit">submit</button>
</div>
</form>
<script>
$(function(){
$('#allInp').formset({
prefix:'{{items.prefix}}',
addText:'add new row',
addCssClass:'btn btn-info ',
deleteText:'delete',
deleteCssClass:'delFun',
})
</script>但是我一直收到此错误消息
but i keep getting this error message
无法分配'mouse'":"ItemsInvoice.item"；必须是"Item"实例.
Cannot assign "'mouse'": "ItemsInvoice.item" must be a "Item" instance.
还有我的这些表格.py
and also these my forms.py
class CustomerInvoiceForm(forms.ModelForm):
class Meta:
model = Invoice
fields = [
'customer'
]
class CustomerInvoiceItemForm(forms.ModelForm):
item = forms.ModelChoiceField(queryset=Item.objects.all(),empty_label='---')
class Meta:
model = ItemsInvoice
fields = ['item','quantity','price']
CustomerInvoiceInlineFormset = inlineformset_factory(
Invoice,ItemsInvoice,form=CustomerInvoiceItemForm,
fields=('item','quantity','price'),extra=1
)
我也尝试过使用它
#other code
obj=CustomerInvoiceItemForm()
#instead of > CustomerInvoice.objects.create(seller=seller,customer=customer)
#other code
#and using this > items = CustomerInvoiceInlineFormset(request.POSt)
#instead of > items = InvoiceItem.objects.create(item=item,quantity=quantity,price=price,cash=cash,discount=discount)
但是什么也没保存?为了得到我想要的东西，我不应该改变一些东西吗?
but saves nothing? isn't there something i should change in order to get what i trying for?
推荐答案
在模板< option value =" {{i}}"> 中输出Ìtem.__ str __ 作为键，因此无法解析Ìtem.
In template <option value="{{i}}"> outputs Ìtem.__str__ as the key and no Ìtem can be resolved from this.
更改为< option value =" {{i.pk}}>
这篇关于如何使用输入标签字段，而不是默认的Django?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
