Pro PHP and jQuery by Jason Lengstorf.pdf - Computer Science ...

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304 CHAPTER 8 ■ EDITING THE CALENDAR WITH AJAX AND JQUERY Figure 8-8. Because the event no longer exists, the event view makes no sense Remove the Event from the Calendar After Deletion You want to avoid the confusion caused by having non-existent events on the calendar after a user deletes them, so you need to add functionality to remove events from the calendar once this occurs. To do this, you’ll add a new function to the fx object literal called removeevent. This function will use the active class applied to events when they’re brought up in the modal window to fade them out and remove them from the DOM. You can add this function to fx using the following bold code: fx = { "initModal" : function() {...}, "boxin" : function(data, modal) {...}, "boxout" : function(event) {...}, "addevent" : function(data, formData){...}, // Removes an event from the markup after deletion
}; "removeevent" : function() { // Removes any event with the class "active" $(".active") .fadeOut("slow", function(){ $(this).remove(); }); }, "deserialize" : function(str){...}, "urldecode" : function(str) {...} CHAPTER 8 ■ EDITING THE CALENDAR WITH AJAX AND JQUERY Modifying the Form Submission Handler to Remove Deleted Events To remove events after they are deleted, add a new variable called remove to the form submission event handler. This will store a boolean value that tells the script whether to remove an event. By default, this value will be set to false, which means the event should not be removed. The only condition under which an event should be removed is if the Yes, Delete It button is clicked from the confirmation dialog. Add a check for this text in the Submit button and set remove to true if a match is made. Inside the success handler, set up a conditional that checks whether remove is true and fires fx.removeevent() if it is. Finally, to prevent empty elements from being added to the calendar, modify the conditional that fires fx.addevent() to ensure that remove is false before executing. You can make these changes by adding the code shown in bold: // Edits events without reloading $(".edit-form input[type=submit]").live("click", function(event){ // Prevents the default form action from executing event.preventDefault(); // Serializes the form data for use with $.ajax() var formData = $(this).parents("form").serialize(), // Stores the value of the submit button submitVal = $(this).val(), // Determines if the event should be removed remove = false; // If this is the deletion form, appends an action if ( $(this).attr("name")=="confirm_delete" ) { // Adds necessary info to the query string formData += "&action=confirm_delete" + "&confirm_delete="+submitVal; // If the event is really being deleted, sets 305
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".foo+p"); CHAPTER 1 ■ INTRODUC
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$("p:odd"); [ p.foo, p#bar ] Select
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$("p:parent"); [ p, p.foo, p, p#bar
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which returns the following in the
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Selecting Only Enabled or Disabled
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26 CHAPTER 2 ■ COMMON JQUERY ACTI
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C H A P T E R 3 ■ ■ ■ Object-
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$obj = new MyClass; var_dump($obj);
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CHAPTER 3 ■ OBJECT-ORIENTED PROGR
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$obj = new MyClass; // Get the valu
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} public function setProperty($newv
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} } return $this->getProperty(); pu
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Create a new object $newobj = new M
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} } // Create a new object $newobj
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Private Properties and Methods CHAP
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} public function __construct() { e
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*/ CHAPTER 3 ■ OBJECT-ORIENTED PR
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Ease of Implementation CHAPTER 3
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C H A P T E R 4 ■ ■ ■ Build a
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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# # DocumentRoot: The directory out
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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} ?> } } } CHAPTER 4 ■ BUILD AN E
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■ Note For the sake of brevity, D
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} ?> CHAPTER 4 ■ BUILD AN EVENTS
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} ?> } include_once $filename; CHAP
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private $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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Page 325: P A R T 4 ■ ■ ■ Advancing jQu
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Page 361 and 362: C H A P T E R 10 ■ ■ ■ Extend
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CHAPTER 10■ EXTENDING JQUERY ■
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Defines default values for the plug
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}); // Loads the event data from th
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■ ■ ■ Index ■ Special Chara
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■ C Calendar app JavaScript initi
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saving new calendar events in addin
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:eq( ) method, 17, 20, 26-27 equals
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eginning of string, 324 character c
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asic selectors in by class name, 12
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.die( ) method, 75-76 .error( ) met
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.parents( ) method, 33 .parentsUnti
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overview, 328 regex pattern to vali
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