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- from django.utils.html import conditional_escape
- from django.utils.safestring import mark_safe
- from django.forms.widgets import ClearableFileInput, CheckboxInput
- from easy_thumbnails.files import get_thumbnailer
- from django.templatetags.static import static
- from django.utils.encoding import force_unicode
- class ImagePreviewFileInput(ClearableFileInput):
- def render(self, name, value, attrs=None,):
- substitutions = {
- 'clear_checkbox_label': self.clear_checkbox_label,
- 'initial' : '<img class="img-responsive img-thumbnail" width="%s" src="%s">' % (
- force_unicode('100%'),
- force_unicode(get_thumbnailer(value)['medium'].url if value and hasattr(value, 'url') else static('images/placeholder.svg'))
- )
- }
- template = '%(initial)s%(input)s'
- substitutions['input'] = super(ClearableFileInput, self).render(name, value, attrs)
- if not self.is_required:
- template = '%(initial)s%(clear_template)s%(input)s'
- checkbox_name = self.clear_checkbox_name(name)
- checkbox_id = self.clear_checkbox_id(checkbox_name)
- substitutions['clear_checkbox_name'] = conditional_escape(checkbox_name)
- substitutions['clear_checkbox_id'] = conditional_escape(checkbox_id)
- substitutions['clear'] = CheckboxInput().render(checkbox_name, False, attrs={'id': checkbox_id})
- substitutions['clear_template'] = self.template_with_clear % substitutions
- return mark_safe(template % substitutions)
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