Provide feedback when donation lambda fails.

[adunkman]

I donated last week — the donation went through successfully, but the site hung showing "Processing…" and threw some errors to the console.

Looks like the root cause is that this lambda is crashing — I don’t see the code here, but I‘d be happy to take a look. The flow looks like this:

• User fills out data in the form, and clicks Donate.
• Stripe modal is presented to gather credit card info and process the payment.
• Stripe modal closes, triggering a callback to the page.
• The page sets the donate button text to "Processing…" and makes a request out to the above referenced lambda.
• This request fails on CORS preflight because the response from this lambda doesn’t contain the appropriate CORS headers. (This appears to be because the lambda itself is crashing when handling the CORS preflight).
• There is no error handler on the request, so the page stays in this state.

This PR implements a quick and dirty error handler for this post-donation request, and lets the user know that their donation was successful but they might not have had their special instructions saved. (Is this true? I don’t know what that lambda does).

Your donation was successful, but an error occurred when processing your special instructions. Send us a message at [email protected] if you have any special instructions for your donation.

Here’s what it looks like:

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Additionally, I don’t have a copy of ruby which is functioning on my machine, so I added a Dockerfile and related docker-compose.yml, and documented it in the README.

[adunkman]

Build errors appear to be because the pull request is from a fork; give me a shout if there’s more I should be doing to make this PR ready!

[danbjoseph]

with the switch to Open Collective for managing donations (see #44) i don't think this PR is needed anymore. apologies for no one reviewing this in a timely fashion. hopefully you'll still be interested in contributing to other issues in the future!