changing imagefield to file field on sponsorupdateform and sponsorshi…

…papplicationform. adding django file validator to these two and the sponsor model

sponsors/forms.py

@@ -3,6 +3,7 @@
 from django import forms
 from django.conf import settings
 from django.contrib.admin.widgets import AdminDateWidget
+from django.core.validators import FileExtensionValidator
 from django.db.models import Q
 from django.utils import timezone
 from django.utils.functional import cached_property
@@ -225,10 +226,11 @@ class SponsorshipApplicationForm(forms.Form):
         help_text="For display on our sponsor webpage. High resolution PNG or JPG, smallest dimension no less than 256px",
         required=False,
     )
-    print_logo = forms.ImageField(
+    print_logo = forms.FileField(
         label="Sponsor print logo",
         help_text="For printed materials, signage, and projection. SVG or EPS",
         required=False,
+        validators=[FileExtensionValidator(['eps', 'epsf' 'epsi', 'svg'])],
     )
 
     primary_phone = forms.CharField(
@@ -557,10 +559,11 @@ class SponsorUpdateForm(forms.ModelForm):
         help_text="For display on our sponsor webpage. High resolution PNG or JPG, smallest dimension no less than 256px",
         required=False,
     )
-    print_logo = forms.ImageField(
+    print_logo = forms.FileField(
         widget=forms.widgets.FileInput,
         help_text="For printed materials, signage, and projection. SVG or EPS",
         required=False,
+        validators=[FileExtensionValidator(['eps', 'epsf' 'epsi', 'svg'])],
     )
 
     def __init__(self, *args, **kwargs):

sponsors/migrations/0099_auto_20231224_1829.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.24 on 2023-12-24 18:29
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('sponsors', '0098_auto_20231219_1910'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='sponsor',
+            name='print_logo',
+            field=models.FileField(blank=True, help_text='For printed materials, signage, and projection. SVG or EPS', null=True, upload_to='sponsor_print_logos', validators=[django.core.validators.FileExtensionValidator(['eps', 'epsfepsi', 'svg'])], verbose_name='Print logo'),
+        ),
+    ]

sponsors/models/sponsors.py

@@ -3,6 +3,7 @@
 """
 from allauth.account.models import EmailAddress
 from django.conf import settings
+from django.core.validators import FileExtensionValidator
 from django.db import models
 from django.core.exceptions import ObjectDoesNotExist
 from django.template.defaultfilters import slugify
@@ -51,6 +52,7 @@ class Sponsor(ContentManageable):
     )
     print_logo = models.FileField(
         upload_to="sponsor_print_logos",
+        validators=[FileExtensionValidator(['eps', 'epsf' 'epsi', 'svg'])],
         blank=True,
         null=True,
         verbose_name="Print logo",