Support index files

Eg: if there’s an foo/index.html it should be served at foo/. Also, foo should redirect to foo/.

[evansd]

I’ve finally added built-in support for serving index files in the upcoming 4.0 release: http://whitenoise.evans.io/en/latest/django.html#index-files-django

[edmorley]

And for WhiteNoise 3+, something like:

from whitenoise.middleware import WhiteNoiseMiddleware


class IndexWhiteNoise(WhiteNoiseMiddleware):
    """Adds support for serving index pages for directory paths."""

    INDEX_NAME = 'index.html'

    def update_files_dictionary(self, *args):
        super(IndexWhiteNoise, self).update_files_dictionary(*args)
        index_page_suffix = '/' + self.INDEX_NAME
        index_name_length = len(self.INDEX_NAME)
        directory_indexes = {}
        for url, static_file in self.files.items():
            if url.endswith(index_page_suffix):
                # For each index file found, add a corresponding URL->content mapping
                # for the file's parent directory, so that the index page is served for
                # the bare directory URL ending in '/'.
                parent_directory_url = url[:-index_name_length]
                directory_indexes[parent_directory_url] = static_file
        self.files.update(directory_indexes)

    def find_file(self, url):
        # In debug mode, find_file() is used to serve files directly from the filesystem
        # instead of using the list in `self.files`, so we append the index filename so
        # that will be served if present.
        if url.endswith('/'):
            url += self.INDEX_NAME
        return super(IndexWhiteNoise, self).find_file(url)