Question

My PHP script generates a table with rows which can optionaly be edited or deleted. There is also a possibilety to create a new Row.

I am having a hard time to figure out how to update the HTML rows which are generated through PHP and inserted via jQuery. After the update it must be still editable. The HTML is generated into a div.

1. jQuery (insert generated HTML/wait for action)

2. PHP (generate html)

3. Go back to step 1)

(EDIT: Corrected an error and changed script to answer)

PHP

require_once "../../includes/constants.php";

// Connect to the database as necessary
$dbh = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD) or die("Unaable to connnect to MySQL");

$selected = mysql_select_db(DB_NAME, $dbh) or die("Could not select printerweb");

$action = $_POST['action'];
$name = $_POST['name'];
$id = $_POST['id'];

if ($action == "new") {
    mysql_query("INSERT INTO place (id, name) VALUES (NULL, $name)");
}
elseif ($action == "edit") {
    mysql_query("UPDATE place SET name = $name WHERE id = $id");
}
elseif ($action == "delete") {
    mysql_query("DELETE FROM place WHERE id = $id");
}

echo "<table><tbody>";
$result = mysql_query("SELECT * FROM place");
while ($row = mysql_fetch_array($result)) {
    echo "<tr><td id=" . $row["id"] . " class=inputfield_td><input class=inputfield_place type=text value=" . $row["name"] . " /></td><td class=place_name>" . $row["name"] . "</td><td class=edit>edit</td><td class=cancel>cancel</td><td class=delete>delete</td><td class=save>SAVE</td></tr> \n";
}
echo "</tbody>";
echo "</table>";
echo "<input type=text class=inputfield_visible />";
echo "<button class=new>Neu</button>";

JS

$(function() {
    $.ajax({
        url: "place/place_list.php",
        cache: false,
        success: function(html) {
            $("#place_container").append(html);
        }
    });
    $(".edit").live("click", function() {
        $(this).css("display", "none").prevAll(".place_name").css("display", "none").prevAll(".inputfield_td").css("display", "block").nextAll(".cancel").css("display", "block").nextAll(".save").css("display", "block").prevAll(".inputfield_td").css("display", "block");
    });
    $(".cancel").live("click", function() {
        $(this).css("display", "none").prevAll(".edit").css("display", "block").prevAll(".place_name").css("display", "block").prevAll(".inputfield_td").css("display", "none").nextAll(".save").css("display", "none");
    });
    $(".save").live("click", function() {
        var myvariable1 = $(this).siblings().find("input[type=text]").val();
        var myvariable2 = $(this).prevAll("td:last").attr("id");
        $(this).css("display", "none").prevAll(".cancel").css("display", "none").prevAll(".edit").css("display", "block").prevAll(".place_name").css("display", "block").prevAll(".inputfield_td").css("display", "none");
        alert("save name: " + myvariable1 + " save id: " + myvariable2);
    });
    $(".delete").live("click", function() {
        var myvariable3 = $(this).prevAll("td:last").attr("id");
        alert(myvariable3);
    });
    $(".new").live("click", function() {
        var myvariable4 = $(this).prevAll("input[type=text]").val();
        $.post("place/place_list.php", {
            action: "new",
            name: "" + myvariable4 + ""
        });
    });
});

Answer 1

place all your event-handlers outside the ajax function and use the live() method instead. And you need to include what data to send when using ajax. From visualjquery:

$(function() {
    $.ajax({
        type: "POST",
        url: "some.php",
        data: "name=John&location=Boston",
        success: function(msg){
            alert( "Data Saved: " + msg );
        }
    });

    $(".edit").live("click", function() {
        //event handler code here
    });
    //more event handlers
});