how to handle HTTP errors in emberJs while using ember-data with RESTAdapters?

Question

I have a route /products. In App.ProductsRoute, I am using a setupController hook to assign list of products fetched from server to local App.Product objects.

I am setting the model in setupController hook as :

self_controller.set('model', self_controller.store.find('product'));

This works well when HTTP status is 200. But when server returns some HTTP error (like 500-Internal Server Error, 401-Unauthorized Errors, etc) I am getting error as JSON.parse. I am not sure how to handle errors for this.store.find() calls.

Note: It returns Ember's promiseArray which I need to check once resolved (before actually assigning it to model). Any help on this topic would be much appreciated. Thanks.

Peter Brown · Accepted Answer · 2014-03-12 12:37:26Z

2

What about using the promise's catch callback to handle the errors? Untested, but something like this should work:

self_controller.store.find('product').then(function(products) {
  self_controller.set('model', products);
}).catch(function(reason) {
  // Do something to handle the error response...
});

answered Mar 12, 2014 at 12:37

Peter Brown

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3 Comments

exAres Over a year ago

Hi, I am able to enter catch() function when there is an error. But the problem is when I call some_product.save() and get an error, it still stores the product in local ember-data array. How can I undo that in catch()..? Thanks.

Peter Brown Over a year ago

Maybe rollback?

exAres Over a year ago

Yes. I solved it using rollback on particular record. Thanks a lot for your help.

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