• Welcome
• User Guide

  Getting started

  Setting up Dragonfly

  Working locally

  The .htaccess file

  Routes

  Default routes

  Creating your own routes

  Templates

  Creating templates and views

  Handling errors using templates

  Important Globals

  $GET $POST $FILES $COOKIES

  DF_SELF DF_SELF_DIR DF_PAGE

  Plugins

  Using and creating plugins

  List of included plugins

  Changes

  Changes between versions

  API Reference

  Core API

  Dragonfly DB

  Dragonfly SMTP

• Examples

  Tables

  Generate tables from lists

  Feeds

  How to read feeds from other websites

  AJAX

  Some simple AJAX calls

  Twitter

  Using Twitter with Dragonfly

  SEO Experiments

  Experiments in SEO

  Useful information

  Dragonfly debugging information

• Code
• About

Parameters and Forms

Dragonfly's lib/request.lsp defines many of the global symbols needed to deal with getting user input from forms, handling file uploads, etc.

Dragonfly includes the PHP-like contexts $GET, $POST, $COOKIES and $FILES for handling user-supplied data.

For example, if we wanted to retrieve the value of the GET parameter "foo", we would write:

($GET "foo")

This box shows the value of "foo":

For more information on $GET, $POST, $COOKIES and $FILES, see the api.

Same Name Multi-Params

Although it's rare, sometimes it's convenient to generate a request where a single parameter has multiple values, like this:

GET /form.cgi?bar=1&bar=2

However, normally only the last value of bar is accepted. To get the entire list of values append [] to the end of the variable name, like this:

GET /form.cgi?bar[]=1&bar[]=2

($GET "bar[]")
;=> (1 2)

One prominent example is a form that contains a select box that allows multiple selections. Like this one:

Example: Multi-selection form

Select multiple choices by holding down the Shift key and then click Submit.

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