Module: Normatron::Filters::SqueezeFilter

Defined in:

lib/normatron/filters/squeeze_filter.rb

Class Method Summary

• .evaluate(input, *targets) ⇒ String

  Remove multiple occurences of the same character.

Class Method Details

.evaluate(input, *targets) ⇒ String

Remove multiple occurences of the same character. If no option are given, all runs of identical characters are replaced by a single character.

Examples:

SqueezeFilter.evaluate("yellow    moon")               #=> "yelow mon"
SqueezeFilter.evaluate("  now   is  the", " ")         #=> " now is the"
SqueezeFilter.evaluate("putters shoot balls", "m-z")   #=> "puters shot balls"

Using as ActiveRecord::Base normalizer

normalize :attribute_a, :with => [:custom_filter, :squeeze]
normalize :attribute_b, :with => [:custom_filter, [:squeeze, "a-f"]]
normalize :attribute_c, :with => [:custom_filter, {:squeeze => ["a-f"]}]

Parameters:

• input (String) —

  A character sequence

• targets ([String]*) —

  Characters to be affected

Returns:

• (String) —

  The clean character sequence or the object itself

See Also:

• String#squeeze
• Normatron::Filters::SquishFilter

# File 'lib/normatron/filters/squeeze_filter.rb', line 24

def self.evaluate(input, *targets)
  return input unless input.kind_of?(String)
  targets.any? ? input.squeeze(targets.last) : input.squeeze
end