This is very experimental API and used to register a function that can generate source objects relative to another one. This works in combination with urlresolver but handles the build-all part of the equation.
The registered function is invoked for each source after it was build. As such it's important to only return items if a virtual sub resource actually exists for a page.
from lektor.sourceobj import VirtualSourceObject from lektor.db import Record from lektor.utils import build_url class Source(VirtualSourceObject): @property def path(self): return self.record.path + '@source' @property def url_path(self): return build_url([self.record.url_path, 'source.txt']) @env.generator def generate_source_file(node): if isinstance(node, Record) and not node.is_attachment: yield Source(node)