我有两种模型，一种是启动（在其中创建启动名称），第二种是团队（在其中动态创建额外的团队成员）。该过程分步进行，当创建启动名称并将其重定向到第二步时，出现以下错误：
Reverse for 'str_team' with no arguments not found. 1 pattern(s) tried: ['str_application\\-1/(?P<startup_id>[^/]+)/$']
据我所读，必须添加一个模板标记，以便通过URL将实例从一个模板传递到另一个模板。感谢您的帮助，以下是我的代码： URLS ：
from django.urls import path
from . import views
urlpatterns = [
path ( 'str_dashboard/' , views.str_dashboard , name = 'str_dashboard' ) ,
path ( 'str_application/' , views.startup, name = 'str_name' ) ,
path ( 'str_application-1/<int:startup_id>/' , views.startup, name = 'str_team' ) ,
]
模型：
from django.db import models
class Startup ( models.Model ) :
startup_name = models.CharField ( 'Startup Name' , max_length = 100 )
def __str__(self) :
return self.startup_name
class Team ( models.Model ) :
name = models.CharField ( 'Name' , max_length = 100 )
position = models.CharField ( 'Position' , max_length = 100 )
startup = models.ForeignKey ( Startup , on_delete = models.CASCADE )
def __str__(self) :
return str(self.startup)
class Req_Fund(models.Model):
startup_2 = models.ForeignKey ( Startup , on_delete = models.CASCADE )
funds = models.DecimalField ( 'Requested Fund' , max_digits = 14 , decimal_places = 2 , null = False , blank = False )
product_development = models.DecimalField ( 'Product Development' ,max_digits = 14 , decimal_places = 2 , null = False , blank = False)
marketing_sales = models.DecimalField ( 'Marketing/Sales' , max_digits = 14 , decimal_places = 2 , null = False , blank = False)
operation_inventory = models.DecimalField ( 'Operations/Inventory' , max_digits = 14 , decimal_places = 2 , null = False , blank = False)
legal_other = models.DecimalField ( 'Legal/Others' ,max_digits = 14 , decimal_places = 2 , null = False , blank = False)
def __str__(self) :
return str(self.startup_2)
表格：
from .models import *
from django import forms
class StartupNameForm (forms.ModelForm):
class Meta:
model = Startup
fields = ['startup_name',]
class TeamForm (forms.ModelForm):
class Meta:
model = Team
fields = ['startup','name','position',]
widgets = { 'startup' : forms.HiddenInput ( ) }
class ReqFund (forms.ModelForm):
class Meta:
model = Req_Fund
fields = '__all__'
widgets = { 'startup_2' : forms.HiddenInput ( ) }
观看次数：
from django.forms import inlineformset_factory
from .decorators import str_required
from django.contrib.auth.decorators import login_required
from django.shortcuts import render , redirect
from .forms import *
from .models import *
@login_required ( login_url = 'str_login' )
@str_required
def str_dashboard(request) :
return render ( request , 'str_dashboard.html' )
def startup(request ):
if request.method == 'POST':
form = StartupNameForm(request.POST)
if form.is_valid():
form.save()
return redirect('str_team')
else:
form = StartupNameForm()
return render(request, 'application/str_name.html', {'form': form})
def team(request, startup_id):
startup = Startup.objects.get(id=startup_id)
TeamFormset = inlineformset_factory(Startup, Team, fields = ('name', 'position', 'startup'))
if request.method == 'POST':
formset = TeamFormset(request.POST, instance = startup)
if formset.is_valid():
formset.save()
return redirect ('str_dashboard')
formset = TeamFormset ( instance = startup )
return render ( request , 'application/str_team.html' , { 'formset' : formset } )
def reqfund (request, startup_id):
strup = Startup.objects.get(id=startup_id)
if request.method == 'POST':
form = ReqFund(request.POST)
if form.is_valid():
i = form.save (commit = False)
i.startup.id = strup.id
i.save()
return redirect('str_dashboard')
else:
form = ReqFund()
return render(request, 'application/str_rfund.html', {'form': form})
HTML模板-用于状态名称：
<form method='post' href="{url 'str_name' startup_id}" >
{% csrf_token %}
{{form|crispy}}
<button type='submit'>Submit</button>
</form>
HTML模板-用于团队：
<form id="my-form" method="post" >
{% csrf_token %}
{{ formset.media }}
<div class="individual-form">
{{ formset|crispy }}
</div>
<button type='submit'>Submit</button>
</form>
错误追溯：
Traceback:
File "C:\Users\Lenovo\venv\lib\site-packages\django\core\handlers\exception.py" in inner
34. response = get_response(request)
File "C:\Users\Lenovo\venv\lib\site-packages\django\core\handlers\base.py" in _get_response
126. response = self.process_exception_by_middleware(e, request)
File "C:\Users\Lenovo\venv\lib\site-packages\django\core\handlers\base.py" in _get_response
124. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\Lenovo\PycharmProjects\untitled1\sourcing\startups\views.py" in startup
20. return redirect('str_team')
File "C:\Users\Lenovo\venv\lib\site-packages\django\shortcuts.py" in redirect
58. return redirect_class(resolve_url(to, *args, **kwargs))
File "C:\Users\Lenovo\venv\lib\site-packages\django\shortcuts.py" in resolve_url
148. return reverse(to, args=args, kwargs=kwargs)
File "C:\Users\Lenovo\venv\lib\site-packages\django\urls\base.py" in reverse
90. return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
File "C:\Users\Lenovo\venv\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix
622. raise NoReverseMatch(msg)
Exception Type: NoReverseMatch at /str_application/
Exception Value: Reverse for 'str_team' with no arguments not found. 1 pattern(s) tried: ['str\\-application\\-1/(?P<startup_id>[0-9]+)$']
答案 0 :(得分：1)
您需要将主键作为参数传递给URL，例如：
def startup(request ):
if request.method == 'POST':
form = StartupNameForm(request.POST)
if form.is_valid():
result = form.save()
return redirect('str_team', startup_id=result.pk)
else:
form = StartupNameForm()
return render(request, 'application/str_name.html', {'form': form})请注意，在return render(..)情况（如果表单无效）和if情况（如果它是GET请求）中都应执行else。
此外，还有另一个问题，您的__str__中的Team不会返回str，而返回Startup：
class Team(models.Model) :
name = models.CharField ('Name', max_length =100)
position = models.CharField ('Position', max_length=100)
startup = models.ForeignKey (Startup, on_delete=models.CASCADE)
def __str__(self) :
return str(self.startup)答案 1 :(得分：1)
第三个URL路径写错了。 应该这样写。
path('str-application-1/<int:startup_id>',...)