Category: Web Development

Bypass CORS Errors When Testing APIs Locally

August 16, 2014 Nic Raboy

Anyone who has worked with a RESTful API using JavaScript knows that testing can be a complete pain if the API owner hasn’t enabled CORS on their server. So what is CORS? According to Wikipedia, it is the following:

Cross-origin resource sharing (CORS) is a mechanism that allows many resources (e.g., fonts, JavaScript, etc.) on a web page to be requested from another domain outside the domain the resource originated from.

Often API owners will leave CORS disabled even though their API is open to the public. In my opinion it doesn’t feel public if the API owner is not allowing requests from all angles.

Here are a few tricks I’ve picked up in regards to bypassing the awful CORS errors you receive in your browser when testing.

Count Records From A hasMany Relationship In Grails

July 9, 2014 Nic Raboy

Recently I was tasked with trying to determine a distinct count between two tables with a many-to-many and one-to-many relationship. More specifically I needed to find out how many users were signing into the system on any given day. This is not to be confused with how many logins a particular user had for any given day.