[英]How to resolve reverse match error in django
我是 Django 的新手,我不明白為什么會彈出這個錯誤:
django.urls.exceptions.NoReverseMatch: Reverse for 'updater' with no arguments not found. 1 pattern(s) tried: ['update/(?P<updating>[0-9]+)$']
[26/Jul/2020 19:05:05] "GET /update/2 HTTP/1.1" 500 127513
我的網址:
urlpatterns=[
path('update/<int:updating>',views.update,name='updater'),
]
html 頁面:
<!DOCTYPE html>
<html lang="en">
<head>
{% load static %}
<title>NEW PRODUCT</title>
</head>
<body>
<div class="bg-contact2" style="background-image: url('images/bg-01.jpg');">
<div class="container-contact2">
<div class="wrap-contact2">
<form class="contact2-form validate-form" method="post" action="{%url 'updater' %}" enctype="multipart/form-data">
{% csrf_token %}
<span class="contact2-form-title">
Provide Product details Below
</span>
<div class="wrap-input2 validate-input" data-validate="type is required">
<input class="input2" type="text" name="type" value="{{details.product_type}}">
<span class="focus-input2" data-placeholder="PRODUCT-TYPE"></span>
</div>
<div class="wrap-input2 validate-input" data-validate = "Name is required">
<input class="input2" type="text" name="name" value="{{details.product_name}}">
<span class="focus-input2" data-placeholder="PRODUCT NAME"></span>
</div>
<div class="wrap-input2 validate-input" data-validate = "description is required">
<textarea class="input2" name="description">{{details.product_description}}</textarea>
<span class="focus-input2" data-placeholder="PRODUCT DESCRIPTION"></span>
</div>
<div class="wrap-input2 validate-input" data-validate = "Price is required">
<input class="input2" type="number" name="price" value="{{details.product_price}}">
<span class="focus-input2" data-placeholder="PRICE"></span>
</div>
<div class="wrap-input2 validate-input" data-validate = "Picture is required">
<label >product sample picture</label>
<input class="input2" type="file" name="picture">
<span class="focus-input2" data-placeholder=""></span>
</div>
<div class="container-contact2-form-btn">
<div class="wrap-contact2-form-btn">
<div class="contact2-form-bgbtn"></div>
<button class="contact2-form-btn">
Update Product Listing
</button>
</div>
</div>
</form>
</div>
</div>
</div>
</body>
</html>
我的看法:
def update (request,updating):
if request.method=='POST':
product_details=product_info.objects.get(id=updating)
product_details.product_type=request.POST.get('type')
product_details.product_name=request.POST.get('name')
product_details.product_description=request.POST.get('description')
product_details.product_price=request.POST.get('price')
if (len(request.FILES) != 0):
image = request.FILES['picture']
product_details.product_pic = image
product_details.save()
alldetails = product_info.objects.all()
return render(request, 'adminside/editingpage.html', {'editing_details': alldetails})
else:
product_details = product_info.objects.get(id=updating)
return render(request,'adminside/updating.html',{'details':product_details})
def update (request,updating) :
if request.method=='POST' :
product_details=product_info.objects.get(id=updating)
product_details.product_type=request.POST.get('type')
product_details.product_name=request.POST.get('name')
product_details.product_description=request.POST.get('description')
product_details.product_price=request.POST.get('price')
if (len(request.FILES) != 0):
image = request.FILES['picture']
product_details.product_pic = image
product_details.save()
alldetails = product_info.objects.all()
return render(request, 'adminside/editingpage.html', {'editing_details': alldetails})
else:
product_details = product_info.objects.get(id=updating)
return render(request,'adminside/updating.html',{'details':product_details})
def update (request,updating):
if request.method=='POST':
product_details=product_info.objects.get(id=updating)
product_details.product_type=request.POST.get('type')
product_details.product_name=request.POST.get('name')
product_details.product_description=request.POST.get('description')
product_details.product_price=request.POST.get('price')
if (len(request.FILES) != 0):
image = request.FILES['picture']
product_details.product_pic = image
product_details.save()
alldetails = product_info.objects.all()
return render(request, 'adminside/editingpage.html', {'editing_details': alldetails})
else:
product_details = product_info.objects.get(id=updating)
return render(request,'adminside/updating.html',{'details':product_details})
我認為這與在 url 中傳遞產品的 id 有關,但我不確定如何解決它。
您沒有在 url 中輸入任何參數,您必須在表單操作中輸入參數才能像這樣更新
<form class="contact2-form validate-form" method="post" action="{%url 'updater' updating='ANYVALUE' %}" enctype="multipart/form-data">
因為你沒有指定任何值你的 url 不匹配
此 urlpattern update/
采用int
路由參數
path('update/<int:updating>',views.update,name='updater'),
在您的模板中,您嘗試使用不包含參數的反向updater
。 因此,它試圖反轉到update/
的 urlpattern,它找不到,因為您只有update/<int:updating>
的路徑
{%url 'updater' %}
您需要將其更改為以下內容,因為您為context
object 提供了名稱details
,您可以訪問
{%url 'updater' details.id %}
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