kopia lustrzana https://github.com/wagtail/wagtail
58 wiersze
1.9 KiB
ReStructuredText
58 wiersze
1.9 KiB
ReStructuredText
.. _changing_rich_text_representation:
|
|
|
|
=================================
|
|
Changing rich text representation
|
|
=================================
|
|
|
|
The HTML representation of an image in rich text can be customised - for example, to display captions or custom fields.
|
|
|
|
To do this requires subclassing ``Format`` (see :ref:`rich_text_image_formats`), and overriding its ``image_to_html`` method.
|
|
|
|
You may then register formats of your subclass using ``register_image_format`` as usual.
|
|
|
|
.. code-block:: python
|
|
|
|
# image_formats.py
|
|
from wagtail.images.formats import Format, register_image_format
|
|
|
|
|
|
class SubclassedImageFormat(Format):
|
|
|
|
def image_to_html(self, image, alt_text, extra_attributes=None):
|
|
|
|
custom_html = # the custom HTML representation of your image here
|
|
# in Format, the image's rendition.img_tag(extra_attributes) is used to generate the HTML
|
|
# representation
|
|
|
|
return custom_html
|
|
|
|
|
|
register_image_format(
|
|
SubclassedImageFormat('subclassed_format', 'Subclassed Format', classnames, filter_spec)
|
|
)
|
|
|
|
As an example, let's say you want the alt text to be displayed as a caption for the image as well:
|
|
|
|
.. code-block:: python
|
|
|
|
# image_formats.py
|
|
from django.utils.html import format_html
|
|
from wagtail.images.formats import Format, register_image_format
|
|
|
|
|
|
class CaptionedImageFormat(Format):
|
|
|
|
def image_to_html(self, image, alt_text, extra_attributes=None):
|
|
|
|
default_html = super().image_to_html(image, alt_text, extra_attributes)
|
|
|
|
return format_html("{}<figcaption>{}</figcaption>", default_html, alt_text)
|
|
|
|
|
|
register_image_format(
|
|
CaptionedImageFormat('captioned_fullwidth', 'Full width captioned', 'bodytext-image', 'width-750')
|
|
)
|
|
|
|
.. note::
|
|
Any custom HTML image features will not be displayed in the Draftail editor, only on the published page.
|