Class: Feet::RouteObject

Inherits:
Object show all
Defined in:
lib/feet/routing.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RouteObject

Returns a new instance of RouteObject.



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# File 'lib/feet/routing.rb', line 3

def initialize
  @rules = []
  @default_rules = [
    {
      regexp: /^\/([a-zA-Z0-9]+)$/,
      vars: ['controller'],
      dest: nil,
      via: false,
      options: { default: { 'action' => 'index' } }
    }
  ]
end

Instance Method Details

#check_url(url, method) ⇒ Object 



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# File 'lib/feet/routing.rb', line 82

def check_url(url, method)
  (@rules + @default_rules).each do |rule|
    next if rule[:via] && rule[:via] != method.downcase

    # Check if rule against regexp
    matched_data = rule[:regexp].match(url)

    if matched_data
      # Build params hash
      options = rule[:options]
      params = options[:default].dup

      # Match variable names with the regexp captured parts
      rule[:vars].each_with_index do |var, i|
        params[var] = matched_data.captures[i]
      end

      if rule[:dest]
        # There's either a destination like 'controller#action' or a Proc
        return get_dest(rule[:dest], params)
      else
        # The params are specified in the options[:default]
        # Use controller#action to get the Rack application
        controller = params['controller']
        action = params['action']
        return get_dest("#{controller}##{action}", params)
      end
    end
  end
  nil
end

#get_dest(dest, routing_params = {}) ⇒ Object

Returns a Rack application or raises an error if no/invalid ‘dest’



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# File 'lib/feet/routing.rb', line 115

def get_dest(dest, routing_params = {})
  return dest if dest.respond_to?(:call)

  # Ex 'controller#action'
  if dest =~ /^([^#]+)#([^#]+)$/
    name = $1.capitalize
    controller = Object.const_get("#{name}Controller")
    return controller.action($2, routing_params)
  end

  raise "No destination: #{dest.inspect}!"
end

#match(url, *args) ⇒ Object

Example arguments url “:controller/:id” args [:default=>{“action”=>“show”}]



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# File 'lib/feet/routing.rb', line 34

def match(url, *args)
  # Capture the options hash
  options = {}
  options = args.pop if args[-1].is_a? Hash
  # Check for default option
  options[:default] ||= {}

  # Get destination and limit the # of arguments
  dest = nil
  dest = args.pop if args.size > 0
  raise 'Too many arguments!' if args.size > 0

  # Parse URL parts. Split on appropriate punctuation
  # (slash, parens, question mark, dot)
  parts = url.split /(\/|\(|\)|\?|\.)/
  parts.reject! { |p| p.empty? }

  vars = []
  regexp_parts = parts.map do |part|
    case part[0]
    when ':'
      # Map Variable
      vars << part[1..-1]
      '([a-zA-Z0-9]+)?'
    when '*'
      # Map Wildcard
      vars << part[1..-1]
      '(.*)'
    when '.'
      '\\.' # Literal dot
    else
      part
    end
  end

  # Join the main regexp
  regexp = regexp_parts.join('')

  # Store match object
  @rules.push({
                regexp: Regexp.new("^/#{regexp}$"),
                vars: vars,
                dest: dest,
                via: options[:via] ? options[:via].downcase : false,
                options: options
              })
end

#resource(name) ⇒ Object 



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# File 'lib/feet/routing.rb', line 20

def resource(name)
  match "/#{name}", default: { 'action' => 'index' }, via: 'GET'
  match "/#{name}/new", default: { 'action' => 'new' }, via: 'GET'
  match "/#{name}", default: { 'action' => 'create' }, via: 'POST'
  match "/#{name}/:id", default: { 'action' => 'show' }, via: 'GET'
  match "/#{name}/:id/edit", default: { 'action' => 'edit' }, via: 'GET'
  match "/#{name}/:id", default: { 'action' => 'update' }, via: 'PUT'
  match "/#{name}/:id", default: { 'action' => 'update' }, via: 'PATCH'
  match "/#{name}/:id", default: { 'action' => 'destroy' }, via: 'DELETE'
end

#root(*args) ⇒ Object 



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# File 'lib/feet/routing.rb', line 16

def root(*args)
  match('', *args)
end