lib/nitcorn/http_errors.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # Offers `ErrorTemplate` to display error pages
  18 module http_errors
  19
  20 import template
  21
  22 import http_response
  23
  24 # A basic error page for the HTTP error `code`
  25 class ErrorTemplate
  26         super Template
  27
  28         # HTTP error code
  29         var code: Int is writable
  30
  31         # Header on this page
  32         var header: nullable Streamable = null is writable
  33
  34         # Body to show with this page
  35         var body: nullable Streamable = null is writable
  36
  37         redef fun rendering
  38         do
  39                 var code_message = http_status_codes[code]
  40                 var message
  41                 if code_message != null then
  42                         message = "Error {code}: {code_message}"
  43                 else message = "Error {code}"
  44
  45                 add """
  46 <!DOCTYPE html>
  47 <head>
  48         <meta charset="utf-8">
  49         <meta http-equiv="X-UA-Compatible" content="IE=edge">
  50         <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
  51         <title>"""
  52         add message
  53         add """
  54         </title>
  55 </head>
  56 <body>"""
  57
  58                 var header = header
  59                 if header != null then add header
  60
  61                 add """
  62         <div class="container">
  63                 <h1>"""
  64                 add message
  65                 add "</h1>"
  66
  67                 var body = body
  68                 if body != null then add body
  69
  70                 add """
  71         </div>
  72 </body>
  73 </html>"""
  74         end
  75
  76         redef fun to_s do return write_to_string
  77 end