Add renderers and format extension handling

[banesullivan]

Can we add renderers (see details at bottom) and remove the duplicate _png, _jpeg, and _tif variants of many of the endpoints so that they are one endpoint that accepts different formats? I know this is possible, but I haven't been able to get it working with DRF 😕

For example, we have the thumbnail endpoint split as two endpoints:

• /image-file/{id}/thumbnail.png
• /image-file/{id}/thumbnail.jpeg

Can we combine these to: /image-file/{id}/thumbnail.{format}

Thus reducing the method shims for these endpoints like

django-large-image/django_large_image/rest/data.py

Line 38 in 09ef6e8

def thumbnail_png(self, request: Request, pk: int = None) -> HttpResponse:

and

django-large-image/django_large_image/rest/data.py

Line 48 in 09ef6e8

def thumbnail_jpeg(self, request: Request, pk: int = None) -> HttpResponse:

So that we are only using

django-large-image/django_large_image/rest/data.py

Line 25 in 09ef6e8

def thumbnail(self, request: Request, pk: int = None, format: str = None) -> HttpResponse:

with the format argument.

So far I have been unsuccessful in getting this to work. What's annoying is that the default .json and .api "formats" work for these endpoints, but I cannot add any custom formats/renderers like .png, .jpeg, or .tif

from rest_framework.renderers import BaseRenderer as RFBaseRenderer


class BaseRenderer(RFBaseRenderer):
    render_style = 'binary'
    charset = None

    def render(self, data, media_type=None, renderer_context=None):
        return data


class PNGRenderer(BaseRenderer):
    media_type = 'image/png'
    format = 'png'


class JPEGRenderer(BaseRenderer):
    media_type = 'image/jpeg'
    format = 'jpeg'


class JPGRenderer(BaseRenderer):
    media_type = 'image/jpeg'
    format = 'jpg'


image_renderers = [PNGRenderer, JPEGRenderer, JPGRenderer]


class TifRenderer(BaseRenderer):
    media_type = 'image/jpeg'
    format = 'tif'


class TiffRenderer(BaseRenderer):
    media_type = 'image/jpeg'
    format = 'tiff'


image_data_renderers = image_renderers + [TifRenderer, TiffRenderer]