Class: ValidatesBySchema::ValidationOption

Inherits:
Object
  • Object
show all
Defined in:
lib/validates_by_schema/validation_option.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(column) ⇒ ValidationOption

Returns a new instance of ValidationOption.



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# File 'lib/validates_by_schema/validation_option.rb', line 6

def initialize(column)
  @column = column
end

Instance Attribute Details

#column ⇒ Object

column here must be an ActiveRecord column i.e. MyARModel.columns.first



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# File 'lib/validates_by_schema/validation_option.rb', line 4

def column
  @column
end

Instance Method Details

#decimal_max ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 58

def decimal_max
  10.0**(column.precision - column.scale) - 10.0**(-column.scale)
end

#inclusion ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 50

def inclusion
  { in: [true, false], allow_nil: column.null }
end

#inclusion? ⇒ Boolean

Returns:



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# File 'lib/validates_by_schema/validation_option.rb', line 46

def inclusion?
  column.type == :boolean
end

#integer_max ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 54

def integer_max
  (2**(8 * column.limit)) / 2 if column.limit
end

#length ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 42

def length
  { maximum: column.limit, allow_nil: true }
end

#length? ⇒ Boolean

Returns:



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# File 'lib/validates_by_schema/validation_option.rb', line 38

def length?
  [:string, :text].include?(column.type) && column.limit
end

#numericality ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 22

def numericality
  numericality = {}
  if column.type == :integer
    numericality[:only_integer] = true
    if integer_max
      numericality[:less_than] = integer_max
      numericality[:greater_than] = -integer_max
    end
  elsif column.type == :decimal
    numericality[:less_than_or_equal_to] = decimal_max
    numericality[:greater_than_or_equal_to] = -decimal_max
  end
  numericality[:allow_nil] = true
  numericality
end

#numericality? ⇒ Boolean

Returns:



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# File 'lib/validates_by_schema/validation_option.rb', line 18

def numericality?
  [:integer, :decimal, :float].include? column.type
end

#presence ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 14

def presence
  !column.null
end

#presence? ⇒ Boolean

Returns:



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# File 'lib/validates_by_schema/validation_option.rb', line 10

def presence?
  presence && column.type != :boolean
end

#to_hash ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 62

def to_hash
  [:presence, :numericality, :length, :inclusion].inject({}) do |h, k|
    send(:"#{k}?") ? h.merge(k => send(k)) : h
  end
end

#to_s ⇒ Object 



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# File 'lib/validates_by_schema/validation_option.rb', line 68

def to_s
  to_hash.inspect
end