lib/popcorn/examples/templates/example_templates.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2017 Alexandre Terrasa <alexandre@moz-code.org>
   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 import popcorn
  18 import popcorn::pop_templates
  19
  20 class MyTemplateHandler
  21         super Handler
  22
  23         # Template to render
  24         var template = new TemplateString("""
  25                 <h1>Hello %USER%!</h1>
  26                 <p>Welcome to %MYSITE%.</p>
  27         """)
  28
  29         redef fun get(req, res) do
  30                 # Values to add in the template
  31                 var values = new HashMap[String, String]
  32                 values["USER"] = "Morriar"
  33                 values["MYSITE"] = "My super website"
  34
  35                 # Render it
  36                 res.template(template, values)
  37         end
  38 end
  39
  40 class MyTemplateStringHandler
  41         super Handler
  42
  43         redef fun get(req, res) do
  44                 # Values to add in the template
  45                 var values = new HashMap[String, String]
  46                 values["USER"] = "Morriar"
  47                 values["MYSITE"] = "My super website"
  48
  49                 # Render it with a shortcut
  50                 res.template_string("""
  51                         <h1>Hello %USER%!</h1>
  52                         <p>Welcome to %MYSITE%.</p>
  53                 """, values)
  54         end
  55 end
  56
  57 class MyTemplateFileHandler
  58         super Handler
  59
  60         # Use template from external file
  61         var tpl_file = "example_template.tpl"
  62
  63         redef fun get(req, res) do
  64                 # Values to add in the template
  65                 var values = new HashMap[String, String]
  66                 values["USER"] = "Morriar"
  67                 values["MYSITE"] = "My super website"
  68
  69                 # Render it from an external file
  70                 res.template_file(tpl_file, values)
  71         end
  72 end
  73
  74 var app = new App
  75 app.use("/", new MyTemplateHandler)
  76 app.use("/string", new MyTemplateStringHandler)
  77 app.use("/file", new MyTemplateFileHandler)
  78 app.listen("localhost", 3000)