Added support adding generic metadata to contexts

Primitive open graph protocol support

mixins/metadatamixin.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python2
+import copy
+
+from verdandi.mixins.templatemixin import TemplateMixin
+
+class MetadataMixin(TemplateMixin):
+
+    metadata = {}
+
+    def get_metadata(self):
+        return copy.copy(self.metadata)
+
+    def get_context(self):
+        context = super(MetadataMixin, self).get_context()
+        metadata = self.get_metadata()
+
+        for key, value in metadata.items():
+            context['meta_%s' % key] = value
+
+        return context

modules/gallery.py

@@ -9,9 +9,10 @@ from verdandi.mixins.templatemixin import TemplateMixin
 from verdandi.mixins.menuitemmixin import MenuItemMixin
 from verdandi.mixins.fileassetsmixin import FileAssetsMixin
 from verdandi.mixins.newsitemmixin import NewsItemMixin
+from verdandi.mixins.metadatamixin import MetadataMixin
 from verdandi.constants import CONTENT_DIRECTORY, MARKDOWN_EXTENSIONS
 
-class Gallery(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
+class Gallery(MenuItemMixin, NewsItemMixin, MetadataMixin, TemplateMixin, FileAssetsMixin):
     gallery_description_file = 'description.md'
     gallery_directory = 'gallery'
     gallery_images_url = 'img/gallery'
@@ -26,6 +27,8 @@ class Gallery(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
 
     template = "gallery.html"
 
+    metadata_description_len = 10
+
     content_directory = CONTENT_DIRECTORY
     markdown_extensions = MARKDOWN_EXTENSIONS
 
@@ -70,6 +73,26 @@ class Gallery(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
 
         return item
 
+    def get_metadata(self):
+        markdown_converter = markdown.Markdown(extensions = self.markdown_extensions)
+
+        metadata = super(Gallery, self).get_metadata()
+        lines = self.description['content'].split('\n')
+        elipsized_description = '\n'.join(lines[0:self.news_item_len])
+        elipsized_description = markdown_converter.convert(elipsized_description)
+
+
+        meta = {
+        	'url': "/%s" % self.url,
+        	'title': self.description['title'],
+        	'description' : elipsized_description
+        }
+
+        if 'image' in metadata:
+        	meta['image'] = "/%s" % metadata['image']
+
+        return meta
+
 
     def get_context(self):
         context = super(Gallery,self).get_context()

modules/newsfeed.py

@@ -8,10 +8,11 @@ from dateutil import parser
 from verdandi.mixins.templatemixin import TemplateMixin
 from verdandi.mixins.menuitemmixin import MenuItemMixin
 from verdandi.mixins.fileassetsmixin import FileAssetsMixin
+from verdandi.mixins.metadatamixin import MetadataMixin
 from verdandi.constants import CONTENT_DIRECTORY, MARKDOWN_EXTENSIONS
 
 
-class NewsFeed(MenuItemMixin, TemplateMixin, FileAssetsMixin):
+class NewsFeed(MenuItemMixin, MetadataMixin, TemplateMixin, FileAssetsMixin):
 
 	title = "News feed title"
 	template = "newsfeed.html"
@@ -25,7 +26,6 @@ class NewsFeed(MenuItemMixin, TemplateMixin, FileAssetsMixin):
 
 	items = []
 
-
 	def process_message(self, message):
 		other_messages = super(NewsFeed, self).process_message(message)
 
@@ -38,6 +38,23 @@ class NewsFeed(MenuItemMixin, TemplateMixin, FileAssetsMixin):
 		return other_messages
 
 
+	def get_metadata(self):
+		metadata = super(NewsFeed, self).get_metadata()
+
+		meta = {
+			'url': "/%s" % self.url,
+			'title': self.title
+		}
+
+		if 'description' in metadata:
+			meta['description'] = metadata['description']
+
+		if 'image' in metadata:
+			meta['image'] = "/%s" % metadata['image']
+
+		return meta
+
+
 	def get_context(self):
 		context = super(NewsFeed,self).get_context()
 		context['title'] = self.title

modules/page.py

@@ -8,9 +8,10 @@ from verdandi.mixins.templatemixin import TemplateMixin
 from verdandi.mixins.menuitemmixin import MenuItemMixin
 from verdandi.mixins.fileassetsmixin import FileAssetsMixin
 from verdandi.mixins.newsitemmixin import NewsItemMixin
+from verdandi.mixins.metadatamixin import MetadataMixin
 from verdandi.constants import CONTENT_DIRECTORY, MARKDOWN_EXTENSIONS
 
-class Page(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
+class Page(MenuItemMixin, NewsItemMixin, MetadataMixin, TemplateMixin, FileAssetsMixin):
 
 	content_file = "content.md"
 	content_is_markdown = True
@@ -19,6 +20,7 @@ class Page(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
 	markdown_extensions = MARKDOWN_EXTENSIONS
 
 	news_item_len = 10
+	metadata_description_len = 10
 
 
 	def process_message(self, message):
@@ -45,6 +47,24 @@ class Page(MenuItemMixin, NewsItemMixin, TemplateMixin, FileAssetsMixin):
 
 		return item
 
+	def get_metadata(self):
+		markdown_converter = markdown.Markdown(extensions = self.markdown_extensions)
+
+		metadata = super(Page, self).get_metadata()
+		lines = self.content['content'].split('\n')
+		elipsized_content = '\n'.join(lines[0:self.news_item_len])
+		elipsized_content = markdown_converter.convert(elipsized_content)
+
+		meta = {
+			'url': "/%s" % self.url,
+			'title': self.content['title'],
+			'description' : elipsized_content
+		}
+
+		if 'image' in metadata:
+			meta['image'] = "/%s" % metadata['image']
+
+		return meta
 
 	def get_context(self):
 		context = super(Page,self).get_context()