Placing Backbone Models in external files using node.js

Question

I'm trying to find my way through node.js and backbone.js. My intention is to share at least all model-states with the server and browser. Right now I'm not quite sure if I really need to share views as well. I also want to handle all routes by express and nodejs and not backbone. To keep my code a wee bit more structured I was looking forward to keep each model in a separate *.js file. By doing so I'm running into following error message:

TypeError: Object #<Object> has no method 'extend'

I thought it might be a problem with underscore missing in the separate file, so here is my basemodel:

models/BaseModel.js

var Backbone = require('../node_modules/backbone'),
_ = require('../node_modules/underscore'),

var BaseModel = Backbone.Model.extend({

  modelName: 'basemodel'

});

exports.BaseModel = BaseModel;

app.js var BaseModel = require('./models/BaseModel');

var MyModel = BaseModel.extend({
// ... attributes, functions etc.

});

Does anyone have a hint what I'm doing wrong there?

Read this question stackoverflow.com/questions/6549149/… Maybe it help? — MrPovod
– MrPovod, Commented Mar 6, 2013 at 17:27
Hey MrPovod, thanks for your reply. Not quite. I'm not even getting so far to work with attributes. If I place my BaseModel in app.js it works fine. Even if I output both BaseModel from BaseModel.js and BaseModel from app.js they seem both equal. Plus it DOES contain the extend function as well, but node.js complains about it. — Alx
– Alx, Commented Mar 6, 2013 at 17:42

MrPovod · Accepted Answer · 2013-03-06 19:38:19Z

1

Then try this code in app.js:

BaseModel = require('./models/BaseModel').BaseModel;

Or in models/BaseModel.js not of exports.BaseModel = BaseModel; use it - module.exports = BaseModel

answered Mar 6, 2013 at 19:38

MrPovod

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Alx · Accepted Answer · 2013-03-06 17:50:04Z

0

I actually figured it out. The flaw was in referencing to the BaseModel, so

this

var MyModel = BaseModel.extend({
  //
});

had to turn into:

var MyModel = BaseModel.BaseModel.extend({
   //
};

because of exports.BaseModel = BaseModel; in BaseModel.js

answered Mar 6, 2013 at 17:50

Alx

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