Can anyone help me with this issue - Django View (Passing of keys) - html

Question

I have the following views:
def device_port(request):
devices = Device.objects.all()
if request.method == "POST":
selected=request.POST.get('device')
devices = Device.objects.get(pk=selected)
tablename = 'dev_interface_'+selected
print("tablename: " +tablename)
cursor=connection.cursor()
cursor.execute(f"SELECT interface FROM {tablename} WHERE id >=2")
righttable = cursor.fetchall()
return redirect('/device/port/selected',{'devices':devices, 'selected': selected, 'righttable':righttable} )
return render(request, 'interface/device_port.html',{'devices':devices})
def device_port_selected(request, pk):
if request.method == "POST":
job = JobForm(request.POST)
device = devices.hostname
print(devices)
#job.associateddevice = devices.hostname
try:
selection=request.POST.get('portrange')
except:
selection = ""
messages.warning(request, "Please select the ports")
print(selection)
#job.associatedinterface = selection
return render(request, 'interface/device/port/selected/'+device+'.html',{'devices':devices, 'righttable':righttable} )
return render(request, 'interface/device_port_selected.html',{'devices':devices, 'selected': selected, 'righttable':righttable} )
urls.py
urlpatterns = [
path('', views.home, name='interface-home'),
path('device/', DeviceListView.as_view(), name='interface-device'),
path('device_edit/<int:pk>/', views.device_edit, name='device-edit'),
path('device_delete/<int:pk>/', views.device_delete, name = 'device-delete'),
path('device_add/', views.device_add, name='device-add'),
path('device/port/', views.device_port, name='device-port'),
path('device/port/selected/', views.device_port_selected, name='device-port-selected'),
path('device/routeport/', views.device_routeport, name='device-routeport'),
path('interface/', views.interface_list, name='interface-list')
]
device_port.html
<form method="POST">
<div class="form-row align-items-center">
<div class="col-md-5 my-1">
{% csrf_token %}
<label for="Hostname">Hostname</label>
<div class="input-group">
<select id = "list" class="custom-select mr-sm-2" onchange="getSelectValue();">
<option selected>Select</option>
{% for device in devices %}
<option value={{device.id}}>{{device.hostname}}</option>
{%endfor%}
</select>
<div class="input-group-append">
<button class="btn btn-outline-secondary" type="submit">Go</button>
</div>
</div>
</div>
</div>
<input type ="text" name="device" id= "txtvalues" style="display:none">
</form>
So there are 2 page I am dealing with over here (/device/port and /device/port/selected). In this first page /device/port, user is required to pick a value from the drop down box and press the button Go. From here, it is intended to go to the next page which is /device/port/selected with the selected value in the first page pass to the next page.
But with the following code, I receive the error of
device_port_selected() missing 1 required positional argument: 'pk'
when moving from the first page to the next page.

Answer 1

You can't pass a context dictionary to a redirect. The second argument should be the URL arguments, not a context. So change the following line:
return redirect('/device/port/selected',{'devices':devices, 'selected': selected, 'righttable':righttable} )
to
return redirect('device-port-selected', pk=selected)
Note that it is better to use the name of the URL (i.e. device-port-selected) instead of the whole path as you can change paths in the future without affecting the rest of your code.