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| module.exports = function(connection){ | |
| return { | |
| thumb: function(doc){ | |
| if(doc.thumbnails) return; | |
| var Thumbnal = connection.model('Thumbnail'); | |
| Thumbnail.generate(doc.url, function(err, thumb){ | |
| doc.thumbnails = thumb; | |
| doc.save() | |
| }); | |
| } | |
| } | |
| }; |
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| var middleware = require('./middleware')(mongoose); | |
| var Page = new Schema({ | |
| title: { type: String, default: '', trim: true }, | |
| url: { type: String, default: '', trim: true }, | |
| thumbnails: {type: Schema.ObjectId, ref: 'Thumbnails'}, | |
| }); | |
| Page.post('save', middleware.thumb); | |
| var Thumbnail = new Schema({ | |
| domain: {type: String, trim: true}, | |
| url: { | |
| small: { type: String, trim: true }, | |
| original: {type: String, trim: true } | |
| } | |
| }); | |
| Thumbnail.statics.generate = function(doc, cb) { | |
| // generate site preview , save the thumbnail and call cb | |
| } |
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| var Page = mongoose.model('Page'); | |
| var Thumbnail = mongoose.model('Thumbnail'); | |
| var middleware = require('./middleware')(mongoose); | |
| describe('middleware', function(){ | |
| it('generates thumbnails if they are missing', function(done){ | |
| //Mock out your document so that you are sure what exactly the middleware gets | |
| var mockDoc = { | |
| url: 'http://www.gist.github.com', | |
| thumbnail: null, | |
| save: onSave | |
| }; | |
| middleware.thumb(mockDoc); | |
| function onSave(){ | |
| (mockDock.thumbnails).should.equal('some output you expect from Thumbnail.generate'); | |
| done(); | |
| } | |
| }); | |
| it('skips generation if thumbnails are here', function(done){ | |
| //Mock the doc again | |
| var mockDoc = { | |
| thubmnails: true, | |
| save: onSave | |
| } | |
| middleware.thumb(mockDoc); | |
| function onSave(){ | |
| //confirm that thumbnails are not overridden | |
| (mockDock.thumbnails).should.equal(true); | |
| done(); | |
| } | |
| }); | |
| }); | |
| it("generates thumbnail if page does not have one", function(done){ | |
| var pageAttr = { title: 'Gist web page', url: 'http://www.gist.github.com' } | |
| var gist = new Page(pageAttr), function(err, _page){ | |
| if(err) throw err; | |
| done(); | |
| }) |
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