How do I set relative URLs in an ATDocument using Plone's setText()?

Question

I am trying to write a script to rewrite links in a Plone ATDocument. When I call getText() and dereference all the UID links by calling portal_transforms.convertTo('text/x-html-safe') the URLs are all rewritten as "http://foo/Plone/..." (literally, "foo", as the domain name). When I save the text with setText() and try to view it in the site the "foo" domain name is still there and is not re-written to the correct domain.

How can I make the HTML passed to setText() understand links to the current site?

Answer 1

If you want to modify the value of the text field you need to get the value by using the raw getter of the field.

>>> item.getRawText()
>>> ...

This returns the value untouched, then you can modify the text and save it.

NOTE:

By default plone is using the UID to handle internal links (check linkintegrity feature), so you probably not get a relative path from the raw getter, but a ../resolveuid/$(UID) like url.

EDIT:

This may help you to rewrite the links.

>>> import re
>>> from lxml import html
>>> resolveuid_re = re.compile('^[./]*resolve[Uu]id/([^/]*)/?(.*)$')  # Regex resolving the uid from a path.

Get all links from text

>>> raw_text = obj.getRawText()
>>> dom = html.fromstring(raw_text)
>>> links = dom.xpath('//a/@href')
>>> links
['resolveuid/fbb9304e48b24a30ac7ba31eb5be2cb6']

Get uid(s)

>>> uid = resolveuid_re.match(links[0]).group(1)
>>> uid
fbb9304e48b24a30ac7ba31eb5be2cb6

Now you may find and replace the uid(s), store them and you're done.