Class: Wouter

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

Defined Under Namespace

Classes: Endpoint, Request, Response

Constant Summary collapse

@@routes =

Route Definitions

[]

Class Method Summary collapse

Class Method Details

.call(env) ⇒ Object

Rack API



90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
 
# File 'lib/wouter.rb', line 90

def self.call(env)
  path = env["PATH_INFO"]
  method = env["REQUEST_METHOD"].to_sym

  route_params = {}

  route = @@routes.find do |route|
    if route[:method] == method
      if route[:path].include?(":")
        split_path = route[:path].split("/")
        # Find all the named parameters in the route, drop the ":" so we have the names: ":id" => "id"
        route_param_names = split_path.find_all { |s| s.size > 1 ? s[0] == ":" : false }.map { |s| s[1..-1] }
        # Turn the route into a regex: "/hello/:name" => "\/hello\/(\w*)"
        path_regex_string = split_path.map { |s| s[0] == ":" ? "(\\w*)" : s }.join("\/")
        r = Regexp.new(path_regex_string)
        if r.match?(path)
          match_data = r.match(path)
          # Match the match data with the named params, ex { "id" => 123 }
          route_param_names.each_with_index do |n, i|
            route_params[n] = match_data[i+1]
          end
          true
        else
          false
        end
      else
        route[:path] == path
      end
    end
  end

  if route
    params = generate_params(env["rack.input"].gets).merge(route_params)

    request = Request.new(params: params)
    response = Response.new

    route_response = route[:route_class].new.call(request, response)
    response route_response
  else
    response not_found
  end
end

.generate_params(params) ⇒ Object

Query string comes in as “key=value&key=value” and we turn it into { “key” => “value”, “key” => “value” }



143
144
145
146
147
148
149
150
151
 
# File 'lib/wouter.rb', line 143

def self.generate_params(params)
  return {} if params.nil? || params.empty?
  params_hash = {}
  params.split("&").each do |param_pair|
    key, value = param_pair.split("=")
    params_hash[key] = value
  end
  params_hash
end

.not_found ⇒ Object

Helpers



136
137
138
139
140
 
# File 'lib/wouter.rb', line 136

def self.not_found
  resp = Response.new
  resp.status 404
  resp.body "Not Found"
end

.response(route_response) ⇒ Object 



153
154
155
 
# File 'lib/wouter.rb', line 153

def self.response(route_response)
  route_response.build_response
end