Class: JqueryQueryBuilder::Rule

Inherits:
Object
  • Object
show all
Defined in:
lib/jquery_query_builder/rule.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rule_hash) ⇒ Rule

Returns a new instance of Rule.



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# File 'lib/jquery_query_builder/rule.rb', line 4

def initialize(rule_hash)
  self.id = rule_hash['id']
  self.field = rule_hash['field']
  self.type = rule_hash['type']
  self.input = rule_hash['input']
  self.operator = rule_hash['operator']
  self.value = rule_hash['value']
end

Instance Attribute Details

#field ⇒ Object

Returns the value of attribute field.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def field
  @field
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def id
  @id
end

#input ⇒ Object

Returns the value of attribute input.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def input
  @input
end

#operator ⇒ Object

Returns the value of attribute operator.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def operator
  @operator
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def type
  @type
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/jquery_query_builder/rule.rb', line 3

def value
  @value
end

Instance Method Details

#evaluate(object) ⇒ Object 



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# File 'lib/jquery_query_builder/rule.rb', line 13

def evaluate(object)
  get_operator.evaluate(get_input(object), get_value)
end

#get_input(object) ⇒ Object 



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# File 'lib/jquery_query_builder/rule.rb', line 21

def get_input(object)
  fields = field.split('.')
  result = object
  steps = fields.length
  fields.each_with_index do |field, i|
    last_step = i == steps - 1
    result = result[field]
    result = result.first if(result.is_a?(Array) && !last_step)
    break if result.nil?
  end
  if result.is_a? Array
    result.map{|v| typecast_value(v)}
  else
    typecast_value(result)
  end
end

#get_operator ⇒ Object 



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# File 'lib/jquery_query_builder/rule.rb', line 17

def get_operator
  JqueryQueryBuilder::Operator.get_operator_class(operator).new
end

#get_value ⇒ Object 



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# File 'lib/jquery_query_builder/rule.rb', line 38

def get_value
  if value.is_a? Array
    value.map{|v| typecast_value(v)}
  else
    typecast_value(value)
  end
end

#typecast_value(value_to_cast) ⇒ Object 



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# File 'lib/jquery_query_builder/rule.rb', line 46

def typecast_value(value_to_cast)
  return nil if value_to_cast.nil?

  case type
    when 'string'
      value_to_cast.to_s
    when 'integer'
      value_to_cast.to_i
    when 'double'
      value_to_cast.to_f
    when 'date'
      value_to_cast.is_a?(String) ? Date.parse(value_to_cast) : value_to_cast
    when 'time'
      value_to_cast.is_a?(String) ? Time.parse(value_to_cast) : value_to_cast
    when 'datetime'
      value_to_cast.is_a?(String) ? DateTime.parse(value_to_cast) : value_to_cast
    when 'boolean'
      value_to_cast == 'Yes' || value_to_cast == 'yes' || value_to_cast == 'True' || value_to_cast == 'true' || value_to_cast == true
    else
      value_to_cast
  end
end