Dev

Currency

Oct 14, 2014

Since I started building apps back in 2007, I’ve been keeping a list. This is a list of technical pitfalls to avoid when building a new app. Here are a few:

This list has grown over the years and I thought I was in the clear with Cushion until I discovered I needed multiple currencies. Currency! Normally, this wouldn’t be a problem, as it’s just a matter of formatting, but I quickly realized a much bigger problem—combining currencies.

Looking ahead to integration with other services, I noticed that Harvest allows varying currencies per client and per invoice. Freshbooks only varies per client, but allows switching a client’s default currency for current and future invoices. With this in mind, along with Cushion’s interface, I’ll need to combine currencies both visually and in table form.

The table side of combining currencies is the easier of the two. Instead of trying to calculate a total based on the exchange rate of whenever you received a specific invoice, you can simply show multiple totals per currency. It won’t look as good as a single total, but it’s a much better route than driving down the road to insanity via exchange rates.

On the visual side, specifically the budget timeline, I’m in a bit of a pickle. These timelines are based on a financial goal the user sets in the beginning, which is of a single currency. This means that if I want to visualize a variety of currencies, I’ll need a goal per currency, which is not going to happen.

I have a few ideas of how to get around this, but I’m getting ahead of myself. As a first step, I just need the ability to change the default currency per user. This is an easy one, so I’m happy to say it’s already done. I found a Ruby gem, called Money, that provides a thorough list of currencies, along with their symbols, symbol positions, thousand separator, and decimal separator. On the front-end, I can still use Accounting.js—all I need to do is provide the currency settings from the backend.

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  1. Our First Company Lunch
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  2. How to embed Vue.js & Vuex inside an AngularJS app... wait what?
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  3. Funding Cushion
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  4. Hiring a Team of Freelancers
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  15. Spreading the Word
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  16. From Beta to Launch - The Subdomain
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  29. Restructuring the Individual Project Page
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  30. Project Blocks
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  31. Redesigning the Homepage
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  32. Multiple Timelines
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  33. Archiving and Estimate Differences
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  34. Multiple Financial Goals
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  35. Zooming in on the Timeline
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  36. Currency
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  37. Preferences, Accounts, and a Typeface Change
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  38. Sending Out the First Email
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  39. Currency Inputs, Notifications, and Invoice Nets
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  40. Dots and Lines
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  42. Improved Form UX
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  44. Schedule Timeline Patterns
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  45. A Slimmer Schedule Timeline
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  47. Plugging in Real Data for the First Time
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  48. Transitions and Project Lists
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  49. Death to Modals
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  50. The Individual Project Page
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  51. Estimated Incomes and Talks with Other Freelancers
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  52. Statuses to Lists and the Paid Beta
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  53. The Timeline
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  54. Invoice Terminology
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  55. Modal Forms
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  56. Wiring the Backend to the Frontend
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  57. Balancing Design and Dev
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  58. Timecop, Monocle, and Vagrant
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  59. Going with Ruby and Sinatra
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  60. Ditching local-first and trying out Node.js
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  61. Switching to AngularJS
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  62. Building the Table with Vue.js
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  63. Clients, Projects, and Invoices
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  64. Introduction
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