Lektor plugin to work with extensionless URLs. Very hacky! Use at own risk.

lektor_extensionless.py

# -*- coding: utf-8 -*-
import jinja2
from lektor.pluginsystem import Plugin
from lektor.admin.webui import LektorInfo
from lektor.context import url_to

class ExtensionlessPlugin(Plugin):
    name = 'extensionless'
    description = u'Monkey patch the Jinja environment to strip .html from URLs and the server to add .html to extensionless URLs'

    def on_setup_env(self, **extra):
        def extensionless_url_filter(ctx, *a, **kw):
            url = url_to(*a, **kw)
            if url.endswith('.html'): return url[:-5]
            return url

        self.env.jinja_env.filters['url'] = jinja2.contextfilter(extensionless_url_filter)

    def on_server_spawn(self, **extra):
        old_resolve_artifact = LektorInfo.resolve_artifact

        def resolve_artifact(self, path, pad=None, redirect_slash=True):
            last_token = path.split('/')[-1]
            if last_token and '.' not in last_token: path += '.html'
            return old_resolve_artifact(self, path, pad, redirect_slash)

        LektorInfo.resolve_artifact = resolve_artifact