Class: Inquirex::Rules::LessThan

Inherits:
Base
  • Object
show all
Defined in:
lib/inquirex/rules/less_than.rb

Overview

Rule: the answer for the given field (coerced to integer) is less than the threshold.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field, value) ⇒ LessThan

Returns a new instance of LessThan.

Parameters:

  • field (Symbol, String) —

    step id whose answer is compared

  • value (Integer) —

    threshold the answer must stay below



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# File 'lib/inquirex/rules/less_than.rb', line 11

def initialize(field, value)
  super()
  @field = field.to_sym
  @value = value
  freeze
end

Instance Attribute Details

#field ⇒ Object (readonly)

Returns the value of attribute field.



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# File 'lib/inquirex/rules/less_than.rb', line 7

def field
  @field
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/inquirex/rules/less_than.rb', line 7

def value
  @value
end

Class Method Details

.from_h(hash) ⇒ LessThan

Deserializes a LessThan rule from a plain Hash.

Parameters:

  • hash (Hash) —

    rule hash with string or symbol keys

Returns:



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# File 'lib/inquirex/rules/less_than.rb', line 40

def self.from_h(hash)
  field = hash["field"] || hash[:field]
  value = (hash["value"] || hash[:value]).to_i
  new(field, value)
end

Instance Method Details

#evaluate(answers) ⇒ Boolean

True when the field's answer, coerced to an Integer, is below the threshold.

Parameters:

  • answers (Hash{Symbol => Object}) —

    answer context, step_id => value

Returns:

  • (Boolean) 


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# File 'lib/inquirex/rules/less_than.rb', line 22

def evaluate(answers)
  answers[@field].to_i < @value
end

#to_h ⇒ Hash{String => Object}

Returns wire format, same shape .from_h accepts.

Returns:

  • (Hash{String => Object}) —

    wire format, same shape .from_h accepts



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# File 'lib/inquirex/rules/less_than.rb', line 27

def to_h
  { "op" => "less_than", "field" => @field.to_s, "value" => @value }
end

#to_s ⇒ String

Returns human-readable form, e.g. "dependents < 2".

Returns:

  • (String) —

    human-readable form, e.g. "dependents < 2"



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# File 'lib/inquirex/rules/less_than.rb', line 32

def to_s
  "#{@field} < #{@value}"
end