Global model base url and optional automapping

问题:

Is there a way to set a global api_root attribute instead of repeating the declaration over and over in the codebase?

So instead of:

var UserModel = Backbone.Model.extend({
    urlRoot: '/user',
    defaults: {
        name: '',
        email: ''
    }
});
var user = new UserModel();
user.save(userDetails, {
    success: function (user) {
        alert(user.toJSON());
    }
});

I could have set an app-wide attribute like:

app.api_root = 'https://api.ltmo.com/';

And then just map according to convention:

var UserModel = Backbone.Model.extend({ // maps to https://api.ltmo.com/users/
    defaults: {
        name: '',
        email: ''
    }
});
var user = new UserModel();
user.save(userDetails, {
    success: function (user) {
        alert(user.toJSON());
    }
});

回答1:

you could solve this on the jQuery level with ajaxprefilter:

$.ajaxPrefilter(function(options) {
  options.url = 'https://api.ltmo.com/' + options.url;
});