Created
April 17, 2012 19:14
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store/display an image in mongodb using mongoose/express
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/** | |
* Module dependencies | |
*/ | |
var express = require('express'); | |
var fs = require('fs'); | |
var mongoose = require('mongoose'); | |
var Schema = mongoose.Schema; | |
// img path | |
var imgPath = '/path/to/some/img.png'; | |
// connect to mongo | |
mongoose.connect('localhost', 'testing_storeImg'); | |
// example schema | |
var schema = new Schema({ | |
img: { data: Buffer, contentType: String } | |
}); | |
// our model | |
var A = mongoose.model('A', schema); | |
mongoose.connection.on('open', function () { | |
console.error('mongo is open'); | |
// empty the collection | |
A.remove(function (err) { | |
if (err) throw err; | |
console.error('removed old docs'); | |
// store an img in binary in mongo | |
var a = new A; | |
a.img.data = fs.readFileSync(imgPath); | |
a.img.contentType = 'image/png'; | |
a.save(function (err, a) { | |
if (err) throw err; | |
console.error('saved img to mongo'); | |
// start a demo server | |
var server = express.createServer(); | |
server.get('/', function (req, res, next) { | |
A.findById(a, function (err, doc) { | |
if (err) return next(err); | |
res.contentType(doc.img.contentType); | |
res.send(doc.img.data); | |
}); | |
}); | |
server.on('close', function () { | |
console.error('dropping db'); | |
mongoose.connection.db.dropDatabase(function () { | |
console.error('closing db connection'); | |
mongoose.connection.close(); | |
}); | |
}); | |
server.listen(3333, function (err) { | |
var address = server.address(); | |
console.error('server listening on http://%s:%d', address.address, address.port); | |
console.error('press CTRL+C to exit'); | |
}); | |
process.on('SIGINT', function () { | |
server.close(); | |
}); | |
}); | |
}); | |
}); |
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How did we figure out "Adding a default Image path to Mongoose Schema."