Module: Trailblazer::Activity::TaskWrap::Inject::Defaults

Defined in:
lib/trailblazer/activity/task_wrap/inject.rb

Class Method Summary collapse

Class Method Details

.defaults_for(defaults, original_ctx) ⇒ Object

go through all defaultable options and default them if appropriate.



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# File 'lib/trailblazer/activity/task_wrap/inject.rb', line 29

def defaults_for(defaults, original_ctx)
  Hash[
    defaults.collect { |k, v| [k, original_ctx[k] || v] } # FIXME: doesn't allow {false/nil} currently.
  ]
end

.Extension(defaults) ⇒ Object 



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# File 'lib/trailblazer/activity/task_wrap/inject.rb', line 9

def Extension(defaults)
  # Returns new ctx.
  input  = ->(original_ctx) do
    defaulted_options = defaults_for(defaults, original_ctx)

    Trailblazer.Context(original_ctx.merge(defaulted_options))
  end

  output = ->(original_ctx, new_ctx) { # FIXME: use Unscope
    _, mutable_data = new_ctx.decompose

    # we are only interested in the {mutable_data} part since the disposed part
    # represents the injected/defaulted data.
    original_ctx.merge(mutable_data)
  }

  VariableMapping::Extension(input, output, id: input)
end