Class: Ransack::Predicate

Inherits:
Object
  • Object
show all
Defined in:
lib/ransack/predicate.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Predicate


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# File 'lib/ransack/predicate.rb', line 43

def initialize(opts = {})
  @name = opts[:name]
  @arel_predicate = opts[:arel_predicate]
  @type = opts[:type]
  @formatter = opts[:formatter]
  @validator = opts[:validator] ||
    lambda { |v| v.respond_to?(:empty?) ? !v.empty? : !v.nil? }
  @compound = opts[:compound]
  @wants_array = opts[:wants_array] == true || @compound ||
    Constants::IN_NOT_IN.include?(@arel_predicate)
end

Instance Attribute Details

#arel_predicateObject (readonly)

Returns the value of attribute arel_predicate


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# File 'lib/ransack/predicate.rb', line 3

def arel_predicate
  @arel_predicate
end

#compoundObject (readonly)

Returns the value of attribute compound


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# File 'lib/ransack/predicate.rb', line 3

def compound
  @compound
end

#formatterObject (readonly)

Returns the value of attribute formatter


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# File 'lib/ransack/predicate.rb', line 3

def formatter
  @formatter
end

#nameObject (readonly)

Returns the value of attribute name


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# File 'lib/ransack/predicate.rb', line 3

def name
  @name
end

#typeObject (readonly)

Returns the value of attribute type


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# File 'lib/ransack/predicate.rb', line 3

def type
  @type
end

#validatorObject (readonly)

Returns the value of attribute validator


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# File 'lib/ransack/predicate.rb', line 3

def validator
  @validator
end

#wants_arrayObject (readonly)

Returns the value of attribute wants_array


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# File 'lib/ransack/predicate.rb', line 3

def wants_array
  @wants_array
end

Class Method Details

.detect_and_strip_from_string!(str) ⇒ Object


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# File 'lib/ransack/predicate.rb', line 20

def detect_and_strip_from_string!(str)
  if p = detect_from_string(str)
    str.sub! /_#{p}$/, Constants::EMPTY
    p
  end
end

.detect_from_string(str) ⇒ Object


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# File 'lib/ransack/predicate.rb', line 27

def detect_from_string(str)
  names_by_decreasing_length.detect { |p| str.end_with?("_#{p}") }
end

.named(name) ⇒ Object


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# File 'lib/ransack/predicate.rb', line 16

def named(name)
  Ransack.predicates[name.to_s]
end

.namesObject


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# File 'lib/ransack/predicate.rb', line 8

def names
  Ransack.predicates.keys
end

.names_by_decreasing_lengthObject


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# File 'lib/ransack/predicate.rb', line 12

def names_by_decreasing_length
  names.sort { |a,b| b.length <=> a.length }
end

Instance Method Details

#eql?(other) ⇒ Boolean Also known as: ==


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# File 'lib/ransack/predicate.rb', line 55

def eql?(other)
  self.class == other.class &&
  self.name == other.name
end

#format(val) ⇒ Object


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# File 'lib/ransack/predicate.rb', line 65

def format(val)
  if formatter
    formatter.call(val)
  else
    val
  end
end

#hashObject


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# File 'lib/ransack/predicate.rb', line 61

def hash
  name.hash
end

#validate(vals, type = @type) ⇒ Object


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# File 'lib/ransack/predicate.rb', line 73

def validate(vals, type = @type)
  vals.any? { |v| validator.call(type ? v.cast(type) : v.value) }
end