Module: Haml::RailsHelpers

Extended by:
RailsHelpers
Includes:
Helpers
Included in:
RailsHelpers
Defined in:
lib/haml/rails_helpers.rb

Constant Summary collapse

DEFAULT_PRESERVE_TAGS = 
%w[textarea pre code].freeze

Instance Method Summary collapse

Methods included from Helpers

preserve

Instance Method Details

#capture_haml(*args, &block) 



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# File 'lib/haml/rails_helpers.rb', line 49

def capture_haml(*args, &block)
  capture(*args, &block)
end

#find_and_preserve(input = nil, tags = DEFAULT_PRESERVE_TAGS, &block) 



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# File 'lib/haml/rails_helpers.rb', line 12

def find_and_preserve(input = nil, tags = DEFAULT_PRESERVE_TAGS, &block)
  return find_and_preserve(capture_haml(&block), input || tags) if block

  tags = tags.each_with_object('') do |t, s|
    s << '|' unless s.empty?
    s << Regexp.escape(t)
  end

  re = /<(#{tags})([^>]*)>(.*?)(<\/\1>)/im
  input.to_s.gsub(re) do |s|
    s =~ re # Can't rely on $1, etc. existing since Rails' SafeBuffer#gsub is incompatible
    "<#{$1}#{$2}>#{preserve($3)}</#{$1}>"
  end
end

#precede(str, &block) 



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# File 'lib/haml/rails_helpers.rb', line 39

def precede(str, &block)
  str = escape_once(str) unless str.html_safe?
  "#{str}#{capture_haml(&block).chomp}\n".html_safe
end

#preserve(input = nil, &block) 



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# File 'lib/haml/rails_helpers.rb', line 27

def preserve(input = nil, &block)
  return preserve(capture_haml(&block)) if block
  super.html_safe
end

#succeed(str, &block) 



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# File 'lib/haml/rails_helpers.rb', line 44

def succeed(str, &block)
  str = escape_once(str) unless str.html_safe?
  "#{capture_haml(&block).chomp}#{str}\n".html_safe
end

#surround(front, back = front, &block) 



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# File 'lib/haml/rails_helpers.rb', line 32

def surround(front, back = front, &block)
  output = capture_haml(&block)
  front  = escape_once(front) unless front.html_safe?
  back   = escape_once(back)  unless back.html_safe?
  "#{front}#{output.chomp}#{back}\n".html_safe
end