postProvider.js

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/my_blog');
var mongooseTypes = require("mongoose-types")
,useTimestamps = mongooseTypes.useTimestamps;
mongooseTypes.loadTypes(mongoose);
var Email = mongoose.SchemaTypes.Email;
var Url = mongoose.SchemaTypes.Url;
var Schema = mongoose.Schema
  , ObjectId = Schema.ObjectId;

var Comments = new Schema({
    person : String
  , comment : String
  , created_at : Date
});
var Locations = new Schema({
	name : String
});
var Events = new Schema({
	name : String
	,location : [Locations]
});
var Post = new Schema({
    author : ObjectId
  , title : String
  , body : String
  , created_at : Date
  , comments : [Comments]
});
var Pictures = new Schema({
    Path : String
  , comments : [Comments]
  , location : [Locations]
  , created_at : Date
});

var Person = new Schema ({
	firstname : String
	,lastname : String
	,birthdate : Date
	,deathdate : Date
	,username : String
	,email : Email
	,gender : String
	,owner : String
	,events : [Events]
	,pictures : [Pictures]
});
Person.plugin(useTimestamps);
mongoose.model('Post', Post);
var Post = mongoose.model('Post');

PostProvider = function(){};

//Find all posts
PostProvider.prototype.findAll = function(callback) {
  Post.find({}, function (err, posts) {
    callback( null, posts )
  });
};
//Find one post
PostProvider.prototype.findOne = function(username,callback) {
  Post.findOne({username : username}, function (err, posts) {
    callback( null, posts )
  });
};

//Find post by ID
PostProvider.prototype.findById = function(id, callback) {
  Post.findById(id, function (err, post) {
    if (!err) {
callback(null, post);
}
  });
};

//Update post by ID
PostProvider.prototype.updateById = function(id, body, callback) {
  Post.findById(id, function (err, post) {
    if (!err) {
post.title = body.title;
post.body = body.body;
post.save(function (err) {
callback();
});
}
  });
};

//Create a new post
PostProvider.prototype.save = function(params, callback) {
  var post = new Post({title: params['title'], body: params['body'], created_at: new Date()});
  post.save(function (err) {
    callback();
  });
};

//Add comment to post
PostProvider.prototype.addCommentToPost = function(postId, comment, callback) {
  this.findById(postId, function(error, post) {
    if(error){
callback(error)
}
    else {
post.comments.push(comment);
post.save(function (err) {
if(!err){
callback();
}
});
    }
  });
};

exports.PostProvider = PostProvider;