Module: PriceHubble::Utils::Decision

Extended by:
ActiveSupport::Concern
Included in:
Client::Base
Defined in:
lib/price_hubble/utils/decision.rb

Overview

Provides an easy to use decision DSL which works like a flow control. (eg. if conditions, or a switch statement) It should DRY out the processing logic on clients, while make decisions about the status of the response. The decision helper evaluates the answers to: Should we raise an error or return a default value? Was the response any good?

Example:

decision(bang: true) do |result|
  result.fail { nil }
  result.bang { Hausgold::AuthenticationError.new(nil, res, res.body) }
  result.good { Hausgold::Jwt.new(res.body).clear_changes }
  successful?(res)
end

Defined Under Namespace

Classes: Runtime

Instance Method Summary collapse

Instance Method Details

#decision(bang: false) { ... } ⇒ Mixed

Allow users to build decision paths and run them according to the result. This is a kind of flow control like an if condition, or a switch statement. It contains three decision result paths, the happy case (good), an error case for regular issues (fail) and a error case for fatal issues (bang). You can configure the decision which error behaiviour you prefer by setting the bang argument to true or false.

Parameters:

  • bang (Boolean) (defaults to: false) —

    whenever to bang or not

Yields:

  • Runtime to collect the settings and the result

Returns:

  • (Mixed) —

    the result of the decision (good|fail|bang) block



34
35
36
37
 
# File 'lib/price_hubble/utils/decision.rb', line 34

def decision(bang: false, &block)
  runtime = Runtime.new(on_error: bang ? :bang : :fail)
  runtime.evaluate(&block)
end