From 6357403896f7e7faff1ca370cfc03c4e6b650c4f Mon Sep 17 00:00:00 2001
From: leithoff <mail@leithoff.net>
Date: Thu, 7 Jul 2016 14:51:18 +0200
Subject: [PATCH] Updated CodeCorner2 (markdown)

---
 CodeCorner2.md | 74 +++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 55 insertions(+), 19 deletions(-)

diff --git a/CodeCorner2.md b/CodeCorner2.md
index d543571..78581f9 100644
--- a/CodeCorner2.md
+++ b/CodeCorner2.md
@@ -133,27 +133,63 @@ var $public_functions = array(
 		'testinterface'	=> True,
 		);
 ``` 
-... to our code.
-
-Much better, but some nagging error in the upper left corner of the frame where our app appears: ```An error occurred``` ... we added
-
-```php
-	public function create_header () 
-	{
-		common::egw_header();
-		echo parse_navbar();
-
-	}
-
-	public function create_footer () 
-	{
-		common::egw_footer();		
-	}
-``` 
-so we recieve our inital page o.k.
+... to our code. Much better. We recieve our inital page o.k.
 But on Submit. It just did not work. After some work we figured out that ```$_SERVER['PHP_SELF']``` is
 pointing to eGroupware Base ```index.php```. So we had to make our form-action more specific:
 ```php
 	    echo "<form action='".$_SERVER['PHP_SELF']."?menuaction=test.test_ui.testinterface' method='post'>
 ``` 
-this is in no way eGroupwarer - style. So this needs further refinement.
\ No newline at end of file
+this is in no way eGroupwarer - style. So this needs further refinement. We ended up with this whole class
+```php
+<?php
+class test_ui
+{
+	var $public_functions = array(
+		'testinterface'	=> True,
+		);
+	public function testinterface () 
+	{
+		if (trim($_POST['fname'].$_POST['sname'])!='')
+		{
+		    echo "<br>Hello ".$_POST['fname']." ".$_POST['sname']."<br>";
+			echo "<form action='".$GLOBALS['egw']->link('/index.php',array(
+				'menuaction' => 'test.test_ui.testinterface','message'=>'YES'))."' method='post'>
+				<input type='submit' value=' Reload '>
+				</form>";
+		} 
+		else 
+		{
+		    echo "Type a name to be greeted accordingly <br>";
+			echo "<form action='".$GLOBALS['egw']->link('/index.php',array(
+				'menuaction' => 'test.test_ui.testinterface','message'=>'NO'))."' method='post'>
+				<p>first name:<br><input name='fname' type='text' size='30' maxlength='30'></p>
+				<p>name:<br><input name='sname' type='text' size='30' maxlength='40'></p>
+				<input type='submit' value=' Submit '>
+				<input type='reset' value=' Cancel'>
+				</form>";
+		
+		}
+	}
+}
+```  
+So what is new here?
+It is the link functionality:
+```$GLOBALS['egw']->link('/index.php',array('menuaction' => 'test.test_ui.testinterface','message'=>'YES'))```
+It does enable you to call the required function/action of any application and add a key/value pair to that call.
+
+The whole thing looked like that:
+The link functionality provides the possibility to link to internal sites and pass on all internally needed information plus the call of a function with some infos to pass in ```$_GET```
+
+So we introduced functions and the call of a function as well. The major way to call functions within eGroupware is, to call them via build in functions that handle the inclusion and instantiation of the needed classes.
+
+```ExecMethod('test.test_ui.send_request', 'YES');```
+Execute a function, and load a class and include the class file if not done so already. This function is used to create an instance of a class, and if the class file has not been included it will do so.
+
+```ExecMethod2('test.test_ui.send_request2', 'YES', 'SOME MORE');```
+Execute a function with multiple arguments. The function can take object $GLOBALS[classname] from class if it exists.
+
+So we fiddled around with that a bit more and called it a day.
+
+At the campfire we discussed [[Cross Site Scripting|Cross Site Scripting]] and how to handle/avoid that pitfall. 
+***  
+> [Wiki](Home) ▸ [Developer Docs](Developer Docs) ▸ [Code Corner](Code Corner) ▸ **day two**  ▸ [day three](CodeCorner3) 
\ No newline at end of file