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fix error when uploading image with an alpha channel

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This commit is contained in:
thomas girod 2024-08-08 17:50:23 +02:00
parent 00dc03a235
commit ecb48ce663
1 changed files with 3 additions and 6 deletions
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9
core/utils.py
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@ -96,10 +96,7 @@ def get_semester_code(d: Optional[date] = None) -> str:
def scale_dimension(width, height, long_edge):
if width > height:
ratio = long_edge * 1.0 / width
else:
ratio = long_edge * 1.0 / height
ratio = long_edge / max(width, height)
return int(width * ratio), int(height * ratio)
@ -107,8 +104,8 @@ def resize_image(im, edge, img_format):
(w, h) = im.size
(width, height) = scale_dimension(w, h, long_edge=edge)
content = BytesIO()
# use the lanczos filter for antialiasing
im = im.resize((width, height), Resampling.LANCZOS)
# use the lanczos filter for antialiasing and discard the alpha channel
im = im.resize((width, height), Resampling.LANCZOS).convert("RGB")
try:
im.save(
fp=content,