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If thumbnail options are not passed, default options will be used.
size)P r Nr r assertEqualthumbnail_options)r widgets r test_options_defaultz,ImageClearableFileInput.test_options_default s- 002 11FH3EFr c ddd}t j | }d|d< | j |j ddd y)z
A dictionary can be passed as the thumbnail options. The dictionary is
copied so it isn't just a mutable reference of the original.
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The output contains a link to both the source image and the thumbnail.
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The thumbnail is generated using the options provided to the widget.
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The template used to render the thumbnail and the standard
``ClearableFileInput`` output can be customized.
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The form renderer used to render the thumbnail and the standard
``ClearableFileInput`` output can be customized.
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