Resize profile images on upload

website/members/models.py

@@ -17,6 +17,8 @@ from activemembers.models import Committee
 from utils.snippets import datetime_to_lectureyear
 from utils.validators import validate_file_extension
 
+from PIL import Image
+
 
 class ActiveMemberManager(models.Manager):
     """Get all active members"""
@@ -373,6 +375,13 @@ class Member(models.Model):
     def get_absolute_url(self):
         return reverse('members:profile', args=[str(self.user.pk)])
 
+    def __init__(self, *args, **kwargs):
+        super(Member, self).__init__(*args, **kwargs)
+        if self.photo:
+            self._orig_image = self.photo.path
+        else:
+            self._orig_image = ""
+
     def clean(self):
         super().clean()
         errors = {}
@@ -384,6 +393,16 @@ class Member(models.Model):
                                    'display name')})
         raise ValidationError(errors)
 
+    def save(self, *args, **kwargs):
+        super(Member, self).save(args, kwargs)
+        if self.photo and self._orig_image != self.photo.path:
+            image_path = self.photo.path
+            image = Image.open(image_path)
+            # Image.thumbnail does not upscale an image that is smaller
+            image.thumbnail(settings.PHOTO_UPLOAD_SIZE, Image.ANTIALIAS)
+            image.save(image_path, "JPEG")
+            self._orig_image = self.photo.path
+
     def __str__(self):
         return '{} ({})'.format(self.get_full_name(), self.user.username)