Maguire

Maguire handles formatting currencies in various locales with capabilities to layer custom data sets on top.

To add your own locale information, point Maguire to the directory in your project where the locale files will be:

Maguire.locale_paths << "path/to/my/locales"

If you're adding a customization for French-speaking Canadians, the JSON file should be named fr_CA.json.

The file should at least have a layouts hash for providing information on how to format the currencies. The layout format should always be in US Dollars (using the code USD, and symbol $) and use the monetary value of 1234567890.12. In addition, there's an optional layout if there's a custom format when there's no minor units (cf. '$1.-"). The monetary value for the zero layout is 1.00.

So a layout for use in Quebec might be:

{
  "layouts": {
    "positive": "1.234.567.890,12 $",
    "negative": "-1.234.567.890,12 $"
  }
}

Note: positive and negative layouts must be provided.

Adding your own custom currencies works just like adding your own locales; point Maguire to the directory where your currency files are:

Maguire.data_paths << "path/to/my/currencies"

If you're adding Bitcoin to your project, the JSON file should be named BTC. (This corresponds to the lookup code used by the currency parameter passed into the format method.)

Currency files are required to have a "symbol" (and "symbol_html" if needed), "code", and "minor_units" values. ("minor_units" says how many minor units make up a major unit in the currency. If there is no minor unit, this should be 0.)

A file for the Bitcoin currency would look like:

{
  "name": "Bitcoin",
  "code": "BTC",
  "symbol": "฿",
  "symbol_html": "฿",
  "minor_units": 8
}

After doing this, you can format your Bitcoins:

Maguire.format({ value: 400_000_00000000, currency: "BTC" }, { strip_insignificant_zeros: true })
# ฿400,000