Difference between revisions of "AOLserver and Tcl Crash Course"

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(Added hello world example)
(added the "hello world" ADP example)
Line 5: Line 5:
 
*** DOSSY: Create this example with very simple Tcl.
 
*** DOSSY: Create this example with very simple Tcl.
  
 +
  # hello-world.adp
 +
  <% set name [ns_queryget name "world"] %>
 +
  <html>
 +
  <head>
 +
    <title>Hello <%= [ns_quotehtml $name] %>!</title>
 +
  </head>
 +
  <body>
 +
    <p>Hello <%= [ns_quotehtml $name] %>!</p>
 +
    <form>
 +
    <p>Name: <input name="name" value="<%= [ns_quotehtml $name] %>"></p>
 +
    <p><input type="submit" value="Go"></p>
 +
    </form>
 +
  </body>
 +
  </html>
  
 
   # hello-world.tcl
 
   # hello-world.tcl
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       </body>
 
       </body>
 
       </html>"
 
       </html>"
 
  
 
* Tcl Basics
 
* Tcl Basics

Revision as of 02:54, 16 June 2007

Draft Outline

  • ADP Pages
    • Hello <Yourname> - Simple page, user submits form, displays name
      • DOSSY: Create this example with very simple Tcl.
  # hello-world.adp
  <% set name [ns_queryget name "world"] %>
  <html>
  <head>
    <title>Hello <%= [ns_quotehtml $name] %>!</title>
  </head>
  <body>

Hello <%= [ns_quotehtml $name] %>!

    <form>

Name: <input name="name" value="<%= [ns_quotehtml $name] %>">

<input type="submit" value="Go">

    </form>
  </body>
  </html>
  # hello-world.tcl
  set form [ns_getform]
  set name [string trim [ns_set get $form name]]
  if {$name eq ""} {
      set name "world"
  }
  ns_return 200 text/html "<html>
      <head><title>Hello [ns_quotehtml $name]!</title></head>
      <body>
      Hello [ns_quotehtml $name]!
      <form action='hello-world.tcl' method='post'>
      Name: <input name='name' value='[ns_quotehtml $name]'>
      <input type='submit'>
      </form>
      </body>
      </html>"
  • Tcl Basics
    • Explain Minimalist Syntax
      • Commands, Subcommands (Evaluated and Non-Evaluated)
      • Working with variables set, expr
    • Control Structures
      • if, while, etc.
      • procedures
  • Fetching GET and POST
    • Including / Referring to other pages
    • Controlling Output
    • Databases
      • Defining the connection from as a pool in the config.tcl
      • Selecting from the pool
      • Executing Queries, Retrieving Values

Questions

  • Where does ADP excel?
  • What practices should PHP, ASP, JSP developers stop doing?
  • How can one use Tcl to write very concise and readable code?
  • How does one efficiently separate pages into MVC components if the wanted?
  • How and why should one write a domain specific sublanguage?