42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
import imghdr
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from wsgiref.util import FileWrapper
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import structlog
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from django.contrib.auth.decorators import login_required
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from django.http import HttpResponse, StreamingHttpResponse
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from django.shortcuts import get_object_or_404
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from wagtail.images.exceptions import InvalidFilterSpecError
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from wagtail.images.models import SourceImageIOError
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from vbv_lernwelt.media_files.models import UserImage
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logger = structlog.get_logger(__name__)
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@login_required
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def user_image(request, image_id):
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image = get_object_or_404(UserImage, id=image_id)
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filter_spec = request.GET.get("filter", "original")
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try:
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rendition = image.get_rendition(filter_spec)
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except SourceImageIOError:
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return HttpResponse(
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"Source image file not found", content_type="text/plain", status=410
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)
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except InvalidFilterSpecError:
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return HttpResponse(
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"Invalid filter spec: " + filter_spec,
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content_type="text/plain",
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status=400,
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)
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rendition.file.open("rb")
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image_format = imghdr.what(rendition.file)
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return StreamingHttpResponse(
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FileWrapper(rendition.file),
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content_type=f"image/{image_format}" if image_format else "binary/octet-stream",
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)
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