class Money::Currency::RateStore::File

• Money::Currency::RateStore::File
• Money::Currency::RateStore::Memory
• Money::Currency::RateStore
• Reference
• Object

Overview

Class for storage of exchange rate pairs in a JSON file.

NOTE Exchange rates are stored in memory and are automatically loaded from (upon initialization), and persisted to a JSON file (on every mutable transaction commit).

store = Money::Currency::RateStore::File.new("path/to/file.json")
store["USD", "CAD"] = 0.98
store["USD", "CAD"] # => 0.98

# Iterates rates
store.each do |rate|
  puts rate
end

# Save rates
store.save

Defined in:

Constructors

• .new(ctx : YAML::ParseContext, node : YAML::Nodes::Node)

  Class for storage of exchange rate pairs in a JSON file.

• .new(pull : JSON::PullParser)

  Class for storage of exchange rate pairs in a JSON file.

• .new(path : Path | String, *, ttl : Time::Span | Nil = nil)

Class Method Summary

• .key : String

  Returns the class key.

Instance Method Summary

• #load : Nil

  Loads rates from a JSON file.

• #path : Path
• #path=(path : Path)
• #save : Nil

  Saves rates to a JSON file.

• #transaction(*, mutable : Bool = false, & : -> _)

  Wraps block execution in a concurrency-safe transaction.

Constructor Detail

store = Money::Currency::RateStore::File.new("path/to/file.json")
store["USD", "CAD"] = 0.98
store["USD", "CAD"] # => 0.98

# Iterates rates
store.each do |rate|
  puts rate
end

# Save rates
store.save

store = Money::Currency::RateStore::File.new("path/to/file.json")
store["USD", "CAD"] = 0.98
store["USD", "CAD"] # => 0.98

# Iterates rates
store.each do |rate|
  puts rate
end

# Save rates
store.save

Class Method Detail

Instance Method Detail