Yeah, these are those 3 solutions that I wanted to avoid. :)
Actually, wrt your first option. I can not go with fibers as I plan to use
nodejitsu first, and you can't install compiled code. But even if I could,
I could not figure out how to do it with a fibers alternative that we use,
async.
If you could give me a bit more detailed solution on using fibers, I would
be really happy.
thx
2012. március 20., kedd 16:19:14 UTC+1 időpontban Alexey Petrushin a
következőt írta:
>
> I believe there may be 3 possible solutions:
>
> - You may try to use fibers to make Your async code looks like a sync. I
> gues it may work, but I'm not sure about it.
> - Hack Backbone Model, it's sources are small and clear and it shouldn't
> be too complex.
> - Create Your own async model. You can use any model implementation with
> Backbone.js, it's very modular and works well with custom stuff.
> For example, here's my own custom model I use with Backbone for my project
> (I did it because I don't like to write user.get('name') and prefer
> user.name and also for some other reasons)
>
> https://github.com/alexeypetrushin/rad_core/blob/master/assets/rad/models.coffee
>
> https://github.com/alexeypetrushin/rad_core/blob/master/assets/rad_spec/model_spec.coffee
>
>
> On Tuesday, March 20, 2012 3:12:57 PM UTC+4, Bika wrote:
>>
>> hi,
>>
>> I'm trying to use backbone for "everything" on the server side too, and
>> got stuck with doing a proper validation. The problem is that backbone's
>> validate method return a boolean, and the validation mechanics should be
>> implemented inside of it, but with node these mechanics are asynchronous,
>> thus the validate method returns before evaluating my code.
>>
>> Here is a code sample that illustrates well my setup:
>>
>> Backbone.Model.extend({
>> validate: function(){
>> var result;
>> Jobs._withCollection(function(err, collection){
>> collection.count(query, function(count){
>> result = count > 1 ? "Job already exist" : null;
>> });
>> })
>> return result;
>> }
>> })
>>
>> I might be able to improve this a little bit, but I'm not sure if this
>> would work:
>>
>> function _validate(){
>> Jobs._withCollection(function(err, collection){
>> collection.count(query, function(count){
>> yield count > 1 ? "Job already exist" : null;
>> });
>> })
>> }
>>
>> Backbone.Model.extend({
>> validate: function(){
>> return _validate.call(this);
>> }
>> })
>>
>> Especially not for a bit more complex situations where I use async for
>> example, and the return value is set in the last callback of async, like
>> here (this is obviously wrong as res is null at return):
>>
>> Backbone.Model.extend({
>> validate: function(){
>> var res;
>> async.parallel([
>> .. do stuff ..
>> ], function(err, results){
>> res = results;
>> })
>> return results;
>> }
>> })
>>
>> Any ideas?
>>
>> Viktor
>> close
>>
>>
>> close
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