add examples

examples/packages/advanced-example/lektor_advanced.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from lektor.pluginsystem import Plugin
+from lektor.utils import slugify
+import re
+
+
+class AdvancedGroupByPlugin(Plugin):
+    def on_groupby_before_build_all(self, groupby, builder, **extra):
+        # load config
+        regex = self.get_config().get('match')
+        try:
+            regex = re.compile(regex)
+        except Exception as e:
+            print('inlinetags.regex not valid: ' + str(e))
+            return
+
+        # since we load and use a config file, we need to track the dependency
+        @groupby.depends_on(self.config_filename)
+        @groupby.watch('/', 'testC', slug='advanced/{group}/',
+                       template='example-advanced.html')
+        def convert_replace_example(args):
+            # args.field assumed to be Markdown
+            obj = args.field.source
+            for match in regex.finditer(obj):
+                tag = match.group(1)
+                yield slugify(tag), tag
+
+            def _fn(match: re.Match) -> str:
+                tag = match.group(1)
+                return f'<a href="/advanced/{slugify(tag)}/">{tag}</a>'
+            args.field.source = regex.sub(_fn, obj)