多参数 url 模式 django 2.0

Question

我想在我的 url 模式中传递两个参数，但我收到错误无反向匹配，即“项目”。虽然它只适用于一个参数。

这里是主要的 urls 文件-

urlpatterns = [
    path('admin/', admin.site.urls),
    path(r'^materials/(?P<name>(\s+)/',include('materials.urls')),
    path(r'^projects/',include('projects.urls')),
]

projects.urls-

urlpatterns = [
path('',views.view_projects,name='view_projects'),
path('(?<projectid>\d+)/',views.project_steps,name='project_steps'),
path('(P<projectid>\d+)/(P<stepid>\d+)/',views.project_steps,
name='project_steps'),
] 

views.py-

 def view_projects(request):
   projects = project.objects.all
   return render(request,'projects/project_view.html', 
   {'projects':projects})

def project_steps(request,projectid,stepno=1):
  projects = project.objects.all
  stepss = steps.objects.all
  return render(request,'projects/project_steps.html', 
  {'projectid':projectid,'steps':stepss,'projects':projects,
  'stepno':stepno})

模板-

 "{% url 'projects' projectid=project.id stepno=step.step_no %}"

Answer 1

你可以更轻松地做你想做的事（不用正则表达式）。你可以找到documentation details here。

path('some_page/<int:project_id>/', views.some_page, name='some_page'),

上面我的 urlpattern 的函数如下所示：

def some_page(request, project_id):
    project = Project.objects.get(id=project_id)
    return render(request, 'project.html', {'project': project})

请记住，您需要一个 Project 模型才能正常工作，其中包含数据。

你的模板会是这样的：

<p>{{ project.modelfieldname1 }}</p>
<p>{{ project.modelfieldname2 }}</p>

Answer 2

您可以执行以下操作。

Old Way
(r'^view_url/(\d+)/(\d+)$', r'app_name.views.view_function'),
def view_function(request, param1, param2):
    """
    :param request:
    :param param1:
    :param param2:
    :return:
    """
    return render('/* template path and parameters */')

New Way
(r'^view_url/<int:param1>/<int:param2>$', r'app_name.views.view_function'),
def view_function(request, param1, param2):
    """
    :param request:
    :param param1:
    :param param2:
    :return:
    """
    return render('/* template path and parameters */')

有关 django 2.0 中的更多详细信息，您可以查看 django 文档链接。 https://docs.djangoproject.com/en/2.1/topics/http/urls/

Answer 3

无需正则表达式匹配或其他模型字段即可使其工作。

urls.py

path('custom_page/<str:id1>/<str:id2>/', views.custom_page, name='custom_page'),

views.py

def custom_page(request, id1, id2):
    #use in view func or pass to template via context
    context = {}
    context['id1'] = id1
    context['id2'] = id2
    return render(request, 'custom_page.html', context=context)

custom_page.html

<div>{{id1}} {{id2}}</div>