I am trying to learn how to process payments with Square, and am trying to run their examples from GitHub to get a feel regarding how to structure the payments application. I built the node example from here: https://github.com/square/connect-api-examples/tree/master/connect-examples/v2/node_payment using npm install and npm build to get the app up and running.
I am using "4532759734545858" for the card number, "123" for CVV, "0120" for expiration, and "94103" for the zip. I got the card number from here: https://docs.connect.squareup.com/articles/using-sandbox where it states that this is a good number to use for a Visa sandbox.
Also, I have updated the config.json with properties from my developer settings.
When trying to process a payment a get a DOM element that says "Card Declined" without further specifying the error. Is there something I can do to parse the error?
Based on the documentation at: https://docs.connect.squareup.com/articles/using-sandbox#generatingerrorstates it seems the amount_money field of the request is not being populated, but I am having trouble confirming.
Ideally I would like to get to a point where I can add a card as a hash value to my db and use it for recurring billing...
That "card declined" message is actually the error you get back from Square's APIs. You can play around with the error messaging in the app.js file and the `error.jade. Try error.catagory, code, detail.
Keep in mind that this is just a sample app, to show that you can use the APIs with node.js, you probably don't want to use this code in your production system.