Merge pull request #21 from torchbox/fix/page-context

Only attempt to add footnotes if the context's 'page' is a Page object

Author: zerolab

wagtail_footnotes/blocks.py

@@ -3,6 +3,7 @@
 from django.core.exceptions import ValidationError
 from django.utils.safestring import mark_safe
 from wagtail.core.blocks import RichTextBlock
+from wagtail.core.models import Page
 
 FIND_FOOTNOTE_TAG = re.compile(r'<footnote id="(.*?)">.*?</footnote>')
 
@@ -29,7 +30,7 @@ def replace_footnote_tags(self, value, html, context=None):
         else:
             new_context = self.get_context(value, parent_context=dict(context))
 
-        if "page" not in new_context:
+        if not isinstance(new_context.get("page"), Page):
             return html
 
         page = new_context["page"]