An example of populating and viewing couchdb in python

blogs.yaml

- title: Cheap cholesterol
  content: |
    What's the point of being free if you're alone?
  author:
    name: Luke Campbell
    email: [email protected]
  updated: 8:13 PM
- title: Water
  content: |
    Does anyone want water or saltines?
  author:
    name: Luke Campbell
    email: [email protected]
  updated: Nowish
  comments:
    - author:
        name: Liz Lemon
      content: spaghetti
    - author:
        name: Jack
      content: Ghetto Mating Call
- title: Leave me alone
  content: |
    I for one think that this is a great time
    this is a cheap high proof brandy.
    I love miss lemon!
  author:
    name: Luke Campbell
    email: [email protected]
  comments:
    - author:
        name: Colleen
      content: I love your posts!

- title: Jack Donavan
  author:
    name: Jackie Boy
  content: |
    For some reason, everytime I hear that song I get arroused.
  comments: 
    - author:
        name: Luke Campbell
      content: Why are you posting here?
      

couch_example.py

#!/usr/bin/env python

import couchdb, time, yaml

couch = couchdb.Server()
db = couch['dm_datastore']

def load_blogs(file='blogs.yaml'):
	a = yaml.load(open(file))
	ret = []
	for post in a:
		ret.append(Post(**post))
		if 'comments' in post:
			for comment in post['comments']:
				b = Comment(**comment)
				ret.append(b)
	return ret


class Author(dict):
	def __init__(self, name='', email=''):
		self['name'] = name
		self['email'] = email
	
	def __setattr__(self, key, value):
		self[key] = value
	def __getattr__(self, key):
		return self[key]
		
class Post(dict):
	def __init__(self, title='', content='', author={}, updated='', **kwargs):
		self['title'] = title
		self['content'] = content
		self['author'] = author
		self['updated'] = updated
		self['type_'] = 'BlogPost'

	def __setattr__(self, key, value):
		self[key] = value
	def __getattr__(self, key):
		return self[key]

class Comment(dict):
	def __init__(self, ref_id='', content='', author={},updated='' , **kwargs):
		self['ref_id']=ref_id
		self['content'] = content
		self['author'] = author
		self['updated'] = updated
		self['type_'] = 'BlogComment'
	def __setattr__(self, key, value):
		self[key] = value
	def __getattr__(self, key):
		return self[key]

def wipe(db):
	for entry in db:
		db.delete(db[entry])
		
def populate(db):	
	blog = load_blogs()
	post = ''
	for entry in blog:
		if entry['type_']=='BlogPost':
			post, _ = db.save(entry)
		if entry['type_']=='BlogComment':
			entry['ref_id'] = post
			db.save(entry)
		
def init_views(db):
	a = {
	   "_id": "_design/posts",
	   "language": "javascript",
	   "views": {
	       "basic": {
	           "map": "function(doc) {\n\tif(doc.type_ == \"BlogPost\") {\n\t\temit([doc._id,0], doc);\n\t} else if(doc.type_ == \"BlogComment\") {\n\t\temit([doc.ref_id,1], doc);\n\t}\n}"
	       },
	       "by_author": {
	           "map": "function(doc) { \n\tif (doc.type_ == \"BlogPost\") {\n\t\temit(doc.author.name);\n\t}\n}"
	       }
	   }
	}
	if not '_design/posts' in db:
		db.save(a)

wipe(db)
init_views(db)
populate(db)