Question 1

How to parse a currency string like '£50' into a Money object with Monetize?

Accepted Answer

Set Monetize.assume_from_symbol = true to infer GBP from the £ symbol, then use Monetize.parse('£50'). Without this, it defaults to USD, so configuration is crucial for correct currency detection.

Question 2

Monetize vs standard Ruby string parsing for money handling?

Accepted Answer

Monetize provides robust, configurable parsing with currency detection and integration with the money gem, while standard parsing lacks built-in handling for symbols, locales, and edge cases, requiring more custom code.

Question 3

Why does Monetize sometimes parse '10,000' as 100.00 instead of 10000?

Accepted Answer

By default, commas are treated as decimal markers if they match the currency's format. Set Monetize.expect_whole_subunits = true for locale-specific thousands separators, ensuring accurate parsing for inputs without fractional subunits.

Question 4

Can Monetize handle mixed currency inputs like '€80/$100' in one go?

Accepted Answer

Yes, use Monetize.parse_collection('€80/$100') to return a Monetize::Collection with separate Money objects for EUR and USD. Ensure assume_from_symbol is enabled for symbol-based currency inference.

Question 5

What are common setup mistakes with Monetize in Rails apps?

Accepted Answer

Forgetting to configure assume_from_symbol or expect_whole_subunits in initializers can lead to incorrect parsing, especially with user-generated or international data. Always test with sample inputs to validate settings.

Question 6

How to parse a price range like '$50-$100' and check if it's a range?

Accepted Answer

Use Monetize.parse_collection('$50-$100') to get a collection, then call .range? on it—this method detects hyphens and returns true for ranges, as documented in the README for collection parsing.

Monetize

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