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    <p>I'm not sure if you problem is the same as mine, but I found that accessing the width or height property of a normal Django ImageField would read the file from the storage backend, load it into PIL, and return the dimensions from there. This is especially costly with a remote backend like we're using, and we have very media-heavy pages. </p> <p><a href="https://code.djangoproject.com/ticket/8307" rel="nofollow">https://code.djangoproject.com/ticket/8307</a> was opened to address this but the Django devs closed as wontfix because they want the width and height properties to always return the true values. So I just monkeypatch _get_image_dimensions() to use those fields, which does prevent a large number of the boto messages and improves my page-load times.</p> <p>Below is my code modified from the patch attached to that ticket. I stuck this in a place which gets executed early, such as a models.py.</p> <pre><code>from django.core.files.images import ImageFile, get_image_dimensions def _get_image_dimensions(self): from numbers import Number if not hasattr(self, '_dimensions_cache'): close = self.closed if self.field.width_field and self.field.height_field: width = getattr(self.instance, self.field.width_field) height = getattr(self.instance, self.field.height_field) #check if the fields have proper values if isinstance(width, Number) and isinstance(height, Number): self._dimensions_cache = (width, height) else: self.open() self._dimensions_cache = get_image_dimensions(self, close=close) else: self.open() self._dimensions_cache = get_image_dimensions(self, close=close) return self._dimensions_cache ImageFile._get_image_dimensions = _get_image_dimensions </code></pre>
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    1. POStoring images and thumbnails on s3 in django
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    1. COHi, what is `get_image_dimensions` (without the leading underscore)?
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    2. COThat is a function in django.core.files.images. https://github.com/django/django/blob/86f4459f9e3c035ec96578617605e93234bf2700/django/core/files/images.py#L32
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