Class: Journey::Formatter

Inherits:
Object
  • Object
show all
Defined in:
lib/journey/formatter.rb

Overview

The Formatter class is used for formatting URLs. For example, parameters passed to url_for in rails will eventually call Formatter#generate

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(routes) ⇒ Formatter

Returns a new instance of Formatter.



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# File 'lib/journey/formatter.rb', line 8

def initialize routes
  @routes = routes
  @cache  = nil
end

Instance Attribute Details

#routes ⇒ Object (readonly)

Returns the value of attribute routes.



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# File 'lib/journey/formatter.rb', line 6

def routes
  @routes
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/journey/formatter.rb', line 47

def clear
  @cache = nil
end

#generate(key, name, options, recall = {}, parameterize = nil) ⇒ Object

Raises:



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# File 'lib/journey/formatter.rb', line 13

def generate key, name, options, recall = {}, parameterize = nil
  constraints = recall.merge options

  match_route(name, constraints) do |route|
    data = constraints.dup

    keys_to_keep = route.parts.reverse.drop_while { |part|
      !options.key?(part) || (options[part] || recall[part]).nil?
    } | route.required_parts

    (data.keys - keys_to_keep).each do |bad_key|
      data.delete bad_key
    end

    parameterized_parts = data.dup

    if parameterize
      parameterized_parts.each do |k,v|
        parameterized_parts[k] = parameterize.call(k, v)
      end
    end

    parameterized_parts.keep_if { |_,v| v  }

    next unless verify_required_parts!(route, parameterized_parts)

    z = Hash[options.to_a - data.to_a - route.defaults.to_a]

    return [route.format(parameterized_parts), z]
  end

  raise Router::RoutingError
end