prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Users applying for membership changes with field of study gets expiredate in the past
  If you apply for membership today with a Bachelor started in 2011, you will get an expiry date of 2014-09-16.
  
  The given expiration date for a membership should be adjusted upward if the suggested duration of a field of study puts this date in the past.
  
  
  </issue>
  <code>
  [start of apps/approval/views.py]
  1 # -*- encoding: utf-8 -*-
  2 
  3 import datetime
  4 
  5 from django.contrib import messages
  6 from django.contrib.auth.decorators import login_required
  7 from django.http import Http404
  8 from django.shortcuts import get_object_or_404, redirect
  9 from django.utils.translation import ugettext as _
  10 
  11 from apps.approval.forms import FieldOfStudyApplicationForm
  12 from apps.approval.models import MembershipApproval
  13 from apps.authentication.models import AllowedUsername, get_length_of_field_of_study
  14 
  15 
  16 @login_required
  17 def create_fos_application(request):
  18     if request.method == 'POST':
  19         if not request.user.ntnu_username:
  20             messages.error(request, _("Du må knytte et NTNU-brukernavn til kontoen din."))
  21             return redirect('profiles_active', active_tab='membership')
  22 
  23         form = FieldOfStudyApplicationForm(request.POST)
  24         if form.is_valid():
  25             cleaned = form.cleaned_data
  26 
  27             field_of_study = int(cleaned['field_of_study'])
  28 
  29             if field_of_study == 0:
  30                 messages.warning(request, _("Denne studieretningen (Gjest) er ikke et gyldig alternativ."))
  31                 return redirect('profiles_active', active_tab='membership')
  32 
  33             started_day = 1
  34             started_month = 0
  35             started_year = int(cleaned['started_year'])
  36 
  37             if cleaned['started_semester'] == "h":
  38                 started_month = 7
  39             if cleaned['started_semester'] == "v":
  40                 started_month = 1
  41 
  42             started_date = datetime.date(started_year, started_month, started_day)
  43 
  44             # Does the user already have a field of study and started date?
  45             if request.user.started_date and request.user.field_of_study:
  46                 # If there is no change from the current settings, ignore the request
  47                 if request.user.started_date == started_date and request.user.field_of_study == field_of_study:
  48                     messages.error(
  49                         request,
  50                         _("Du er allerede registrert med denne studieretningen og denne startdatoen.")
  51                     )
  52                     return redirect('profiles_active', active_tab='membership')
  53 
  54             application = MembershipApproval(
  55                 applicant=request.user,
  56                 field_of_study=field_of_study,
  57                 started_date=started_date
  58             )
  59 
  60             length_of_fos = get_length_of_field_of_study(field_of_study)
  61             if length_of_fos > 0:
  62                 # Expiry dates should be 15th September, so that we have tiem to get new lists from NTNU
  63                 application.new_expiry_date = datetime.date(
  64                     started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)
  65             application.save()
  66 
  67             messages.success(request, _("Søknad om bytte av studieretning er sendt."))
  68 
  69         return redirect('profiles_active', active_tab='membership')
  70     raise Http404
  71 
  72 
  73 @login_required
  74 def create_membership_application(request):
  75     if request.method == 'POST':
  76         if not request.user.has_expiring_membership:
  77             messages.error(request, _("Din bruker har ikke et utløpende medlemskap."))
  78             return redirect('profiles_active', active_tab='membership')
  79 
  80         if not request.user.ntnu_username:
  81             messages.error(request, _("Du må knytte et NTNU-brukernavn til kontoen din."))
  82             return redirect('profiles_active', active_tab='membership')
  83 
  84         # Extend length of membership by 1 year
  85         membership = AllowedUsername.objects.get(username=request.user.ntnu_username)
  86         new_expiration_date = datetime.date(membership.expiration_date.year + 1, 9, 16)
  87 
  88         application = MembershipApproval(
  89             applicant=request.user,
  90             new_expiry_date=new_expiration_date,
  91         )
  92         application.save()
  93 
  94         messages.success(request, _("Søknad om ett års forlenget medlemskap er sendt."))
  95 
  96         return redirect('profiles_active', active_tab='membership')
  97     raise Http404
  98 
  99 
  100 @login_required
  101 def cancel_application(request, application_id):
  102     app = get_object_or_404(MembershipApproval, pk=application_id)
  103 
  104     if app.applicant != request.user:
  105         messages.error(request, _("Bare søkeren selv kan slette en søknad."))
  106         return redirect('profiles_active', active_tab='membership')
  107 
  108     if app.processed:
  109         messages.error(request, _("Denne søknaden er behandlet og kan ikke slettes."))
  110         return redirect('profiles_active', active_tab='membership')
  111 
  112     app.delete()
  113 
  114     return redirect('profiles_active', active_tab='membership')
  115
  [end of apps/approval/views.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/apps/approval/views.py b/apps/approval/views.py
  --- a/apps/approval/views.py
  +++ b/apps/approval/views.py
  @@ -6,6 +6,7 @@
   from django.contrib.auth.decorators import login_required
   from django.http import Http404
   from django.shortcuts import get_object_or_404, redirect
  +from django.utils import timezone
   from django.utils.translation import ugettext as _
   
   from apps.approval.forms import FieldOfStudyApplicationForm
  @@ -59,9 +60,7 @@
   
               length_of_fos = get_length_of_field_of_study(field_of_study)
               if length_of_fos > 0:
  -                # Expiry dates should be 15th September, so that we have tiem to get new lists from NTNU
  -                application.new_expiry_date = datetime.date(
  -                    started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)
  +                application.new_expiry_date = get_expiry_date(started_year, length_of_fos)
               application.save()
   
               messages.success(request, _("Søknad om bytte av studieretning er sendt."))
  @@ -70,6 +69,21 @@
       raise Http404
   
   
  +def get_expiry_date(started_year, length_of_fos):
  +    today = timezone.now().date()
  +    # Expiry dates should be 15th September, so that we have time to get new lists from NTNU
  +    new_expiry_date = datetime.date(
  +        started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)
  +    # Expiry dates in the past sets the expiry date to next september
  +    if new_expiry_date < today:
  +        if today < datetime.date(today.year, 9, 15):
  +            new_expiry_date = datetime.date(today.year, 9, 15)
  +        else:
  +            new_expiry_date = datetime.date(
  +                today.year, 9, 16) + datetime.timedelta(days=365)
  +    return new_expiry_date
  +
  +
   @login_required
   def create_membership_application(request):
       if request.method == 'POST':
  
verification_info: {"golden_diff": "diff --git a/apps/approval/views.py b/apps/approval/views.py\n--- a/apps/approval/views.py\n+++ b/apps/approval/views.py\n@@ -6,6 +6,7 @@\n from django.contrib.auth.decorators import login_required\n from django.http import Http404\n from django.shortcuts import get_object_or_404, redirect\n+from django.utils import timezone\n from django.utils.translation import ugettext as _\n \n from apps.approval.forms import FieldOfStudyApplicationForm\n@@ -59,9 +60,7 @@\n \n             length_of_fos = get_length_of_field_of_study(field_of_study)\n             if length_of_fos > 0:\n-                # Expiry dates should be 15th September, so that we have tiem to get new lists from NTNU\n-                application.new_expiry_date = datetime.date(\n-                    started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)\n+                application.new_expiry_date = get_expiry_date(started_year, length_of_fos)\n             application.save()\n \n             messages.success(request, _(\"S\u00f8knad om bytte av studieretning er sendt.\"))\n@@ -70,6 +69,21 @@\n     raise Http404\n \n \n+def get_expiry_date(started_year, length_of_fos):\n+    today = timezone.now().date()\n+    # Expiry dates should be 15th September, so that we have time to get new lists from NTNU\n+    new_expiry_date = datetime.date(\n+        started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)\n+    # Expiry dates in the past sets the expiry date to next september\n+    if new_expiry_date < today:\n+        if today < datetime.date(today.year, 9, 15):\n+            new_expiry_date = datetime.date(today.year, 9, 15)\n+        else:\n+            new_expiry_date = datetime.date(\n+                today.year, 9, 16) + datetime.timedelta(days=365)\n+    return new_expiry_date\n+\n+\n @login_required\n def create_membership_application(request):\n     if request.method == 'POST':\n", "issue": "Users applying for membership changes with field of study gets expiredate in the past\nIf you apply for membership today with a Bachelor started in 2011, you will get an expiry date of 2014-09-16.\n\nThe given expiration date for a membership should be adjusted upward if the suggested duration of a field of study puts this date in the past.\n\n", "before_files": [{"content": "# -*- encoding: utf-8 -*-\n\nimport datetime\n\nfrom django.contrib import messages\nfrom django.contrib.auth.decorators import login_required\nfrom django.http import Http404\nfrom django.shortcuts import get_object_or_404, redirect\nfrom django.utils.translation import ugettext as _\n\nfrom apps.approval.forms import FieldOfStudyApplicationForm\nfrom apps.approval.models import MembershipApproval\nfrom apps.authentication.models import AllowedUsername, get_length_of_field_of_study\n\n\n@login_required\ndef create_fos_application(request):\n    if request.method == 'POST':\n        if not request.user.ntnu_username:\n            messages.error(request, _(\"Du m\u00e5 knytte et NTNU-brukernavn til kontoen din.\"))\n            return redirect('profiles_active', active_tab='membership')\n\n        form = FieldOfStudyApplicationForm(request.POST)\n        if form.is_valid():\n            cleaned = form.cleaned_data\n\n            field_of_study = int(cleaned['field_of_study'])\n\n            if field_of_study == 0:\n                messages.warning(request, _(\"Denne studieretningen (Gjest) er ikke et gyldig alternativ.\"))\n                return redirect('profiles_active', active_tab='membership')\n\n            started_day = 1\n            started_month = 0\n            started_year = int(cleaned['started_year'])\n\n            if cleaned['started_semester'] == \"h\":\n                started_month = 7\n            if cleaned['started_semester'] == \"v\":\n                started_month = 1\n\n            started_date = datetime.date(started_year, started_month, started_day)\n\n            # Does the user already have a field of study and started date?\n            if request.user.started_date and request.user.field_of_study:\n                # If there is no change from the current settings, ignore the request\n                if request.user.started_date == started_date and request.user.field_of_study == field_of_study:\n                    messages.error(\n                        request,\n                        _(\"Du er allerede registrert med denne studieretningen og denne startdatoen.\")\n                    )\n                    return redirect('profiles_active', active_tab='membership')\n\n            application = MembershipApproval(\n                applicant=request.user,\n                field_of_study=field_of_study,\n                started_date=started_date\n            )\n\n            length_of_fos = get_length_of_field_of_study(field_of_study)\n            if length_of_fos > 0:\n                # Expiry dates should be 15th September, so that we have tiem to get new lists from NTNU\n                application.new_expiry_date = datetime.date(\n                    started_year, 9, 16) + datetime.timedelta(days=365*length_of_fos)\n            application.save()\n\n            messages.success(request, _(\"S\u00f8knad om bytte av studieretning er sendt.\"))\n\n        return redirect('profiles_active', active_tab='membership')\n    raise Http404\n\n\n@login_required\ndef create_membership_application(request):\n    if request.method == 'POST':\n        if not request.user.has_expiring_membership:\n            messages.error(request, _(\"Din bruker har ikke et utl\u00f8pende medlemskap.\"))\n            return redirect('profiles_active', active_tab='membership')\n\n        if not request.user.ntnu_username:\n            messages.error(request, _(\"Du m\u00e5 knytte et NTNU-brukernavn til kontoen din.\"))\n            return redirect('profiles_active', active_tab='membership')\n\n        # Extend length of membership by 1 year\n        membership = AllowedUsername.objects.get(username=request.user.ntnu_username)\n        new_expiration_date = datetime.date(membership.expiration_date.year + 1, 9, 16)\n\n        application = MembershipApproval(\n            applicant=request.user,\n            new_expiry_date=new_expiration_date,\n        )\n        application.save()\n\n        messages.success(request, _(\"S\u00f8knad om ett \u00e5rs forlenget medlemskap er sendt.\"))\n\n        return redirect('profiles_active', active_tab='membership')\n    raise Http404\n\n\n@login_required\ndef cancel_application(request, application_id):\n    app = get_object_or_404(MembershipApproval, pk=application_id)\n\n    if app.applicant != request.user:\n        messages.error(request, _(\"Bare s\u00f8keren selv kan slette en s\u00f8knad.\"))\n        return redirect('profiles_active', active_tab='membership')\n\n    if app.processed:\n        messages.error(request, _(\"Denne s\u00f8knaden er behandlet og kan ikke slettes.\"))\n        return redirect('profiles_active', active_tab='membership')\n\n    app.delete()\n\n    return redirect('profiles_active', active_tab='membership')\n", "path": "apps/approval/views.py"}]}