Mongoose-Attachments is an attachments plugin for Mongoose.js. It handles ImageMagick transformations for the following providers:
You're reading the documentation for the next release of Mongoose-Attachments, which should be 0.1.0. The current stable release is 0.0.4.
Currently, Mongoose-Attachments is undergoing restructuring as we are moving the different storage providers into submodules. If you plan to use 0.0.4, do make sure that you use the [documentation for 0.0.4] (https://github.com/heapsource/mongoose-attachments/blob/v0.0.4/README.md).
Note: Mongoose-Attachments is bundled with each provider.
The following example extends the 'Post' model to use attachments with a property called 'image' and three different styles.
var mongoose = require('mongoose');
var attachments = require('mongoose-attachments-aws2js');
var PostSchema = new mongoose.Schema({
title: String,
description: String
});
PostSchema.plugin(attachments, {
directory: 'achievements',
storage: {
providerName: 'aws2js',
options: {
key: '<key>',
secret: '<secret>',
bucket: '<bucket>'
}
},
properties: {
image: {
styles: {
original: {
// keep the original file
},
small: {
transform: function(image) {
return image
.resize(150, 150)
;
}
},
medium: {
transform: function(image) {
return image
.resize(120, 120)
;
}
},
medium_jpg: {
options: {
format: 'jpg' // this one changes the format of the image to jpg
}
}
}
}
}
});
var Post = mongoose.model('Post', PostSchema);Assuming that the HTML form sent a file in a field called 'image':
app.post('/upload', function(req, res, next) {
var post = new mongoose.model('Post')();
post.title = req.body.title;
post.description = req.body.description;
post.attach('image', req.files.image, function(err) {
if(err) return next(err);
post.save(function(err) {
if(err) return next(err);
res.send('Post has been saved with file!');
});
})
});var post = new mongoose.model('Post')();
post.title = 'Title of the Post';
post.description = 'Description of the Post';
post.attach('image', {
path: '/path/to/the/file.png'
}, function(err) {
if(err) return next(err);
post.save(function(err) {
if(err) return next(err);
console.log('Post has been Saved with file');
});
})With mongoose-attachments-localfs.
var path = require('path');
var attachments = require('mongoose-attachments-localfs');
MySchema.plugin(attachments, {
directory: '/absolute/path/to/public/images',
storage : {
providerName: 'localfs'
},
properties: {
image: {
styles: {
original: {
// keep the original file
},
thumb: {
options: {
format: 'jpg'
},
transform: function(image) {
return image
.thumbnail(100, 100)
.gravity('center')
.extend(100, 100)
}
},
detail: {
options: {
format: 'jpg'
},
transform: function(image) {
return image
.resize(400, 400, '>')
}
}
}
}
}
});
MySchema.virtual('detail_img').get(function() {
return path.join('detail', path.basename(this.image.detail.path));
});
MySchema.virtual('thumb_img').get(function() {
return path.join('thumb', path.basename(this.image.thumb.path));
});The URL to the images would then be http://<your host>/<mount path>/images prepended to the value of MyModel.detail_img and MyModel.thumb_img.
When mongoose-attachments is used with images, it can provide basic information for each one of the specified styles:
Example:
{
"dims" : {
"w" : 120,
"h" : 103
},
"depth" : 8,
"format" : "PNG",
"oname" : "dragon.png",
"mtime" : ISODate("2012-05-22T06:21:53Z"),
"ctime" : ISODate("2012-05-22T06:21:53Z"),
"size" : 26887,
"path" : "/achievements/4fbaaa31db8cec0923000019-medium.png",
"defaultUrl" : "http://gamygame-dev.s3.amazonaws.com/achievements/4fbaaa31db8cec0923000019-medium.png"
}Transformations are achieved using the gm library.
styles: {
original: {
// no transformations
}
}More information about 'blur' at the [ImageMagick website] http://www.imagemagick.org/script/command-line-options.php#blur
You can specify a format option to change the format of the output.
Example:
styles: {
as_jpeg: {
options: {
format: 'jpg'
}
}
}
Note: DO NOT include the dot in the extension.
There are two possibilities to define which file formats should be supported:
- white list (default)
- formats listed with certain flags by
convert -list format
The default white list contains:
- PNG
- GIF
- TIFF
- JPEG
To add a format call the following method before using the plugin in the mongoose schema:
attachments.registerDecodingFormat('BMP');Copyright (c) 2011-2013 Firebase.co - http://firebase.co
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