Added docs directory, started tutorial

docs/code/tumblelog.py

@@ -0,0 +1,66 @@
+from mongoengine import *
+
+connect('tumblelog')
+
+class Comment(EmbeddedDocument):
+    content = StringField()
+    name = StringField(max_length=120)
+
+class User(Document):
+    email = StringField(required=True)
+    first_name = StringField(max_length=50)
+    last_name = StringField(max_length=50)
+
+class Post(Document):
+    title = StringField(max_length=120, required=True)
+    author = ReferenceField(User)
+    tags = ListField(StringField(max_length=30))
+    comments = ListField(EmbeddedDocumentField(Comment))
+
+class TextPost(Post):
+    content = StringField()
+
+class ImagePost(Post):
+    image_path = StringField()
+
+class LinkPost(Post):
+    link_url = StringField()
+
+Post.drop_collection()
+
+john = User(email='jdoe@example.com', first_name='John', last_name='Doe')
+john.save()
+
+post1 = TextPost(title='Fun with MongoEngine', author=john)
+post1.content = 'Took a look at MongoEngine today, looks pretty cool.'
+post1.tags = ['mongodb', 'mongoengine']
+post1.save()
+
+post2 = LinkPost(title='MongoEngine Documentation', author=john)
+post2.link_url = 'http://tractiondigital.com/labs/mongoengine/docs'
+post2.tags = ['mongoengine']
+post2.save()
+
+print 'ALL POSTS'
+print
+for post in Post.objects:
+    print post.title
+    print '=' * len(post.title)
+
+    if isinstance(post, TextPost):
+        print post.content
+
+    if isinstance(post, LinkPost):
+        print 'Link:', post.link_url
+
+    print
+print
+
+print 'POSTS TAGGED \'MONGODB\''
+print
+for post in Post.objects(tags='mongodb'):
+    print post.title
+print
+
+num_posts = Post.objects(tags='mongodb').count()
+print 'Found %d posts with tag "mongodb"' % num_posts