Simple NodeJS API - CRUD using Mongoose

routes.js

//Keyless - Should be integrated with authentication
//Need to require this file from your Express config using:
//require('./routes.js')(app);

var mongoose = require('mongoose');
var Blog = mongoose.model('blog', {
    title: String,
    subtitle: String,
    img: String,
    content: String,
    slug: String,
    active: { type: Boolean, default: true },
    created: { type: Date, default: Date.now }
});

function blogApi(res) {
    Blog.find(function (err, blog) {
        if (err) {
            res.send(err);
        }
        res.json(blog);
    });
}

module.exports = function (app) {
    //Create
    app.post('/api/create-blog', function (req, res) {
      var slug = convertToSlug(req.body.title);
      Blog.create({
          active: req.body.active,
          title: req.body.title,
          subtitle: req.body.subtitle,
          img: req.body.img,
          slug: slug,
          content: req.body.content
      }, function (err, blog) {
          if (err)
              res.send(err);
          blogApi(res);
      });
    });
    //Retrieve
    app.get('/api/get-blogs', function (req, res) {
        blogApi(res);
    });
    //Update
    app.post('/api/update-blog', function (req, res) {
      var slug = convertToSlug(req.body.title);
      console.log(req.body);
      Blog.update({
          _id: req.body._id
      },
      {
          active: req.body.active,
          title: req.body.title,
          subtitle: req.body.subtitle,
          img: req.body.img,
          slug: slug,
          content: req.body.content
      }, function (err, blog) {
          if (err)
              res.send(err);
          blogApi(res);
      });
    });    
    //Delete
    app.post('/api/delete-blog', function (req, res) {
      Blog.remove({
          _id: req.body._id
      }, function (err, blog) {
          if (err)
              res.send(err);
          blogApi(res);
      });
    });
}