I've been having some trouble implementing Wagtail CMS on my own Django backend. I'm attempting to use the 'headless' version and render content on my own SPA. As a result, I need to create my own EmbedHandlers so that I can generate URL's to documents and images to a private S3 bucket. Unfortunately, though I've registered my own PrivateS3ImageEmbedHandler, Wagtail is still using the default ImageEmbedHandler to convert the html-like bodies to html. Is there a way for me to set it so that Wagtail uses my custom EmbedHandler over the built in default?
Here's my code:
from wagtail.core import blocks, hooks
from messaging.utils import create_presigned_url
class PrivateS3ImageEmbedHandler(EmbedHandler):
identifier = "image"
@staticmethod
def get_model():
return get_user_model()
@classmethod
def get_instance(cls, attrs):
model = cls.get_instance(attrs)
print(model)
return model.objects.get(id=attrs['id'])
@classmethod
def expand_db_attributes(cls, attrs):
image = cls.get_instance(attrs)
print(image)
presigned_url = create_presigned_url('empirehealth-mso', image.file)
print(presigned_url)
return f'<img src="{presigned_url}" alt="it works!"/>'
@hooks.register('register_rich_text_features')
def register_private_images(features):
features.register_embed_type(PrivateS3ImageEmbedHandler)
You need to ensure that your @hooks.register('register_rich_text_features') call happens after the one in the wagtail.images app; this can be done by either putting your app after wagtail.images in INSTALLED_APPS, or by passing an order argument greater than 0:
@hooks.register('register_rich_text_features', order=10)
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