nrk (owner)

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gist: 216771 Download_button fork
public
Description:
Mercury's greetings example ported to mustache.
Public Clone URL: git://gist.github.com/216771.git
Embed All Files: show embed
greetings-mustache.lua #
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-- Here is mercury's greetings example ported to mustache.
-- Note that support for partial templates is still missing.
 
require 'luarocks.require'
require 'mercury'
require 'mustache'
 
module('greetings', package.seeall, mercury.application)
 
local templates = {
    index = [[
<html>
  <head>
    <title>{{page_title}}</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    Welcome to the first Mercury application ever built!<br /><br />
    <form action="./say_hi/" method="post">
      <fieldset>
        <legend>Please fill in your name and choose your preferred language</legend>
        <input type="text" id="name" name="name" /><br/>
        English<input type="radio" name="lang" value="en"/><br/>
        Italian<input type="radio" name="lang" value="it"/><br/>
        Japanese<input type="radio" name="lang" value="ja"/><br/>
      </fieldset>
      <input type="submit" value="Go on...">
    </form>
  </body>
</html>]],
 
    greetings = [[
<html>
  <head>
    <title>{{page_title}}</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    {{#has_name}}
        {{localized_greeting}}
        {{#is_post}}
            <br/><br/>If you do not like POST-based greetings, then 
            <a href="{{generate_get_link}}">you can try this!</a>
        {{/is_post}}
    {{/has_name}}
    {{#has_no_name}}
        Sorry but I do not believe you, you can not have no name ;-)
        Please <a href="javascript:history.go(-1)">try again</a>.
    {{/has_no_name}}
  </body>
</html>]],
}
 
local view = {
    page_title = 'Sinatra in Lua? Sure, it is called "Mercury"!', 
 
    languages  = {
        en = 'Hi %s, how are you?', 
        it = 'Ciao %s, come stai?', 
        ja = '今日は%sさん、お元気ですか。' 
    }, 
 
    is_post     = function() return request.method == 'POST' end,
    has_no_name = function() return params.name == '' or not params.name  end,
    has_name    = function() return not has_no_name() end, 
 
    get_language_id   = function() return params.lang or 'en' end,
    get_base_greeting = function() return languages[get_language_id()] end,  
 
    localized_greeting = function()
        return (get_base_greeting()):format(params.name)
    end,
 
    generate_get_link = function()
        return string.format('../say_hi/%s/%s/', get_language_id(), params.name)
    end,
}
 
 
get('/', function() 
    t.mustache(templates.index, view) 
end)
 
post('/say_hi/', function() 
    t.mustache(templates.greetings, view) 
end)
 
get('/say_hi/:lang/:name/', function() 
    t.mustache(templates.greetings, view) 
end)