Class: Hikari::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/hikari/parser.rb

Constant Summary collapse

ASC = 
'ASC'.freeze
DESC = 
'DESC'.freeze
PARAMS_REGEX =

Regex for safety

/([a-zA-Z0-9._]+)_(asc|desc)$/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sort_param, default = nil) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/hikari/parser.rb', line 10

def initialize(sort_param, default = nil)
  if sort_param.is_a?(Hash) || sort_param.is_a?(Array)
    self.field = sort_param.flatten.first.to_s
    self.order = sort_param.flatten.last
  else
    sort_param ||= ''
    match = sort_param.match(PARAMS_REGEX)
    if match
      self.field = match[1]
      self.order = match[2]
    elsif default.present?
      default = default.split(' ')
      self.order = default.pop
      self.field = default.join('')
    else
      self.field = sort_param
      self.order = ASC
    end
  end
end

Instance Attribute Details

#field ⇒ Object

Returns the value of attribute field.



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# File 'lib/hikari/parser.rb', line 3

def field
  @field
end

#order ⇒ Object

Returns the value of attribute order.



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# File 'lib/hikari/parser.rb', line 3

def order
  @order
end

Instance Method Details

#asc? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hikari/parser.rb', line 43

def asc?
  ASC == @order
end

#desc? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hikari/parser.rb', line 47

def desc?
  DESC == @order
end

#swap_order! ⇒ Object 



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# File 'lib/hikari/parser.rb', line 51

def swap_order!
  asc? ? @order = DESC : @order = ASC
  self
end

#to_s ⇒ Object 



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# File 'lib/hikari/parser.rb', line 56

def to_s
  "#{@field}_#{@order}".downcase
end