prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Membership edit fails due to form errors
  The error is due to missing `comment` field in `MembershipForm`.
  
  `MembershipForm.save()` should be placed in `MembershipCreateForm`, because that's where `comment` field is and that's what should trigger the signal.
  
  </issue>
  <code>
  [start of amy/fiscal/forms.py]
  1 from django import forms
  2 from django.core.validators import RegexValidator
  3 from django.dispatch import receiver
  4 from markdownx.fields import MarkdownxFormField
  5 
  6 from workshops.forms import (
  7     BootstrapHelper,
  8     WidgetOverrideMixin,
  9     form_saved_add_comment,
  10 )
  11 from workshops.models import (
  12     Organization,
  13     Membership,
  14     Sponsorship,
  15 )
  16 # this is used instead of Django Autocomplete Light widgets
  17 # see issue #1330: https://github.com/swcarpentry/amy/issues/1330
  18 from workshops.fields import (
  19     ModelSelect2,
  20 )
  21 from workshops.signals import create_comment_signal
  22 
  23 
  24 # settings for Select2
  25 # this makes it possible for autocomplete widget to fit in low-width sidebar
  26 SIDEBAR_DAL_WIDTH = {
  27     'data-width': '100%',
  28     'width': 'style',
  29 }
  30 
  31 
  32 class OrganizationForm(forms.ModelForm):
  33     domain = forms.CharField(
  34         max_length=Organization._meta.get_field('domain').max_length,
  35         validators=[
  36             RegexValidator(
  37                 r'[^\w\.-]+', inverse_match=True,
  38                 message='Please enter only the domain (such as "math.esu.edu")'
  39                         ' without a leading "http://" or a trailing "/".')
  40         ],
  41     )
  42 
  43     helper = BootstrapHelper(add_cancel_button=False,
  44                              duplicate_buttons_on_top=True)
  45 
  46     class Meta:
  47         model = Organization
  48         fields = ['domain', 'fullname', 'country']
  49 
  50 
  51 class OrganizationCreateForm(OrganizationForm):
  52     comment = MarkdownxFormField(
  53         label='Comment',
  54         help_text='This will be added to comments after the organization '
  55                   'is created.',
  56         widget=forms.Textarea,
  57         required=False,
  58     )
  59 
  60     class Meta(OrganizationForm.Meta):
  61         fields = OrganizationForm.Meta.fields.copy()
  62         fields.append('comment')
  63 
  64     def save(self, *args, **kwargs):
  65         res = super().save(*args, **kwargs)
  66 
  67         create_comment_signal.send(sender=self.__class__,
  68                                    content_object=res,
  69                                    comment=self.cleaned_data['comment'],
  70                                    timestamp=None)
  71 
  72         return res
  73 
  74 
  75 class MembershipForm(forms.ModelForm):
  76     helper = BootstrapHelper(add_cancel_button=False)
  77 
  78     organization = forms.ModelChoiceField(
  79         label='Organization',
  80         required=True,
  81         queryset=Organization.objects.all(),
  82         widget=ModelSelect2(url='organization-lookup')
  83     )
  84 
  85     class Meta:
  86         model = Membership
  87         fields = [
  88             'organization', 'variant', 'agreement_start', 'agreement_end',
  89             'contribution_type', 'workshops_without_admin_fee_per_agreement',
  90             'self_organized_workshops_per_agreement',
  91             'seats_instructor_training',
  92             'additional_instructor_training_seats',
  93         ]
  94 
  95     def save(self, *args, **kwargs):
  96         res = super().save(*args, **kwargs)
  97 
  98         create_comment_signal.send(sender=self.__class__,
  99                                    content_object=res,
  100                                    comment=self.cleaned_data['comment'],
  101                                    timestamp=None)
  102 
  103         return res
  104 
  105 
  106 class MembershipCreateForm(MembershipForm):
  107     comment = MarkdownxFormField(
  108         label='Comment',
  109         help_text='This will be added to comments after the membership is '
  110                   'created.',
  111         widget=forms.Textarea,
  112         required=False,
  113     )
  114 
  115     class Meta(MembershipForm.Meta):
  116         fields = MembershipForm.Meta.fields.copy()
  117         fields.append('comment')
  118 
  119 
  120 class SponsorshipForm(WidgetOverrideMixin, forms.ModelForm):
  121 
  122     helper = BootstrapHelper(submit_label='Add')
  123 
  124     class Meta:
  125         model = Sponsorship
  126         fields = '__all__'
  127         widgets = {
  128             'organization': ModelSelect2(url='organization-lookup'),
  129             'event': ModelSelect2(url='event-lookup'),
  130             'contact': ModelSelect2(url='person-lookup'),
  131         }
  132 
  133 
  134 # ----------------------------------------------------------
  135 # Signals
  136 
  137 # adding @receiver decorator to the function defined in `workshops.forms`
  138 form_saved_add_comment = receiver(
  139     create_comment_signal,
  140     sender=OrganizationCreateForm,
  141 )(form_saved_add_comment)
  142 
  143 # adding @receiver decorator to the function defined in `workshops.forms`
  144 form_saved_add_comment = receiver(
  145     create_comment_signal,
  146     sender=MembershipCreateForm,
  147 )(form_saved_add_comment)
  148
  [end of amy/fiscal/forms.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/amy/fiscal/forms.py b/amy/fiscal/forms.py
  --- a/amy/fiscal/forms.py
  +++ b/amy/fiscal/forms.py
  @@ -92,16 +92,6 @@
               'additional_instructor_training_seats',
           ]
   
  -    def save(self, *args, **kwargs):
  -        res = super().save(*args, **kwargs)
  -
  -        create_comment_signal.send(sender=self.__class__,
  -                                   content_object=res,
  -                                   comment=self.cleaned_data['comment'],
  -                                   timestamp=None)
  -
  -        return res
  -
   
   class MembershipCreateForm(MembershipForm):
       comment = MarkdownxFormField(
  @@ -116,6 +106,16 @@
           fields = MembershipForm.Meta.fields.copy()
           fields.append('comment')
   
  +    def save(self, *args, **kwargs):
  +        res = super().save(*args, **kwargs)
  +
  +        create_comment_signal.send(sender=self.__class__,
  +                                   content_object=res,
  +                                   comment=self.cleaned_data['comment'],
  +                                   timestamp=None)
  +
  +        return res
  +
   
   class SponsorshipForm(WidgetOverrideMixin, forms.ModelForm):
  
verification_info: {"golden_diff": "diff --git a/amy/fiscal/forms.py b/amy/fiscal/forms.py\n--- a/amy/fiscal/forms.py\n+++ b/amy/fiscal/forms.py\n@@ -92,16 +92,6 @@\n             'additional_instructor_training_seats',\n         ]\n \n-    def save(self, *args, **kwargs):\n-        res = super().save(*args, **kwargs)\n-\n-        create_comment_signal.send(sender=self.__class__,\n-                                   content_object=res,\n-                                   comment=self.cleaned_data['comment'],\n-                                   timestamp=None)\n-\n-        return res\n-\n \n class MembershipCreateForm(MembershipForm):\n     comment = MarkdownxFormField(\n@@ -116,6 +106,16 @@\n         fields = MembershipForm.Meta.fields.copy()\n         fields.append('comment')\n \n+    def save(self, *args, **kwargs):\n+        res = super().save(*args, **kwargs)\n+\n+        create_comment_signal.send(sender=self.__class__,\n+                                   content_object=res,\n+                                   comment=self.cleaned_data['comment'],\n+                                   timestamp=None)\n+\n+        return res\n+\n \n class SponsorshipForm(WidgetOverrideMixin, forms.ModelForm):\n", "issue": "Membership edit fails due to form errors\nThe error is due to missing `comment` field in `MembershipForm`.\r\n\r\n`MembershipForm.save()` should be placed in `MembershipCreateForm`, because that's where `comment` field is and that's what should trigger the signal.\n", "before_files": [{"content": "from django import forms\nfrom django.core.validators import RegexValidator\nfrom django.dispatch import receiver\nfrom markdownx.fields import MarkdownxFormField\n\nfrom workshops.forms import (\n    BootstrapHelper,\n    WidgetOverrideMixin,\n    form_saved_add_comment,\n)\nfrom workshops.models import (\n    Organization,\n    Membership,\n    Sponsorship,\n)\n# this is used instead of Django Autocomplete Light widgets\n# see issue #1330: https://github.com/swcarpentry/amy/issues/1330\nfrom workshops.fields import (\n    ModelSelect2,\n)\nfrom workshops.signals import create_comment_signal\n\n\n# settings for Select2\n# this makes it possible for autocomplete widget to fit in low-width sidebar\nSIDEBAR_DAL_WIDTH = {\n    'data-width': '100%',\n    'width': 'style',\n}\n\n\nclass OrganizationForm(forms.ModelForm):\n    domain = forms.CharField(\n        max_length=Organization._meta.get_field('domain').max_length,\n        validators=[\n            RegexValidator(\n                r'[^\\w\\.-]+', inverse_match=True,\n                message='Please enter only the domain (such as \"math.esu.edu\")'\n                        ' without a leading \"http://\" or a trailing \"/\".')\n        ],\n    )\n\n    helper = BootstrapHelper(add_cancel_button=False,\n                             duplicate_buttons_on_top=True)\n\n    class Meta:\n        model = Organization\n        fields = ['domain', 'fullname', 'country']\n\n\nclass OrganizationCreateForm(OrganizationForm):\n    comment = MarkdownxFormField(\n        label='Comment',\n        help_text='This will be added to comments after the organization '\n                  'is created.',\n        widget=forms.Textarea,\n        required=False,\n    )\n\n    class Meta(OrganizationForm.Meta):\n        fields = OrganizationForm.Meta.fields.copy()\n        fields.append('comment')\n\n    def save(self, *args, **kwargs):\n        res = super().save(*args, **kwargs)\n\n        create_comment_signal.send(sender=self.__class__,\n                                   content_object=res,\n                                   comment=self.cleaned_data['comment'],\n                                   timestamp=None)\n\n        return res\n\n\nclass MembershipForm(forms.ModelForm):\n    helper = BootstrapHelper(add_cancel_button=False)\n\n    organization = forms.ModelChoiceField(\n        label='Organization',\n        required=True,\n        queryset=Organization.objects.all(),\n        widget=ModelSelect2(url='organization-lookup')\n    )\n\n    class Meta:\n        model = Membership\n        fields = [\n            'organization', 'variant', 'agreement_start', 'agreement_end',\n            'contribution_type', 'workshops_without_admin_fee_per_agreement',\n            'self_organized_workshops_per_agreement',\n            'seats_instructor_training',\n            'additional_instructor_training_seats',\n        ]\n\n    def save(self, *args, **kwargs):\n        res = super().save(*args, **kwargs)\n\n        create_comment_signal.send(sender=self.__class__,\n                                   content_object=res,\n                                   comment=self.cleaned_data['comment'],\n                                   timestamp=None)\n\n        return res\n\n\nclass MembershipCreateForm(MembershipForm):\n    comment = MarkdownxFormField(\n        label='Comment',\n        help_text='This will be added to comments after the membership is '\n                  'created.',\n        widget=forms.Textarea,\n        required=False,\n    )\n\n    class Meta(MembershipForm.Meta):\n        fields = MembershipForm.Meta.fields.copy()\n        fields.append('comment')\n\n\nclass SponsorshipForm(WidgetOverrideMixin, forms.ModelForm):\n\n    helper = BootstrapHelper(submit_label='Add')\n\n    class Meta:\n        model = Sponsorship\n        fields = '__all__'\n        widgets = {\n            'organization': ModelSelect2(url='organization-lookup'),\n            'event': ModelSelect2(url='event-lookup'),\n            'contact': ModelSelect2(url='person-lookup'),\n        }\n\n\n# ----------------------------------------------------------\n# Signals\n\n# adding @receiver decorator to the function defined in `workshops.forms`\nform_saved_add_comment = receiver(\n    create_comment_signal,\n    sender=OrganizationCreateForm,\n)(form_saved_add_comment)\n\n# adding @receiver decorator to the function defined in `workshops.forms`\nform_saved_add_comment = receiver(\n    create_comment_signal,\n    sender=MembershipCreateForm,\n)(form_saved_add_comment)\n", "path": "amy/fiscal/forms.py"}]}