如何使用Ajax和Jquery删除MySQL记录？

Question

I'm not sure how to get the post title into the jquery .ajax call. I am able to create and display my blog posts, now I'm trying to add functionality to delete and edit. I'm starting with delete since it's obviously the easier of the two. How do I get the blog title from the post array into my functions.js file so that I can delete the matching record in my Database? Also... Thanks!

HTML

 <?php
        include 'scripts/db_connect.php';
        include 'scripts/functions.php';
        sec_session_start();
        $sql = "SELECT * FROM blog";
        $result = mysqli_query($mysqli, $sql);
        while($row = mysqli_fetch_array($result))
        {
            echo'<div class="blog"><h3 class="blog">' . $row['Title'] . "</h3><h3>" . $row['Date'] . "</h3><h3>" . $row['Tag'] . "</h3><hr>";
            echo'<p class="blog">' . $row['Body'] . '</p><button id="editPost" type="button">Edit</button><button id="deletePost" type="button">Delete</button><button id="commentPost" type="button">Comment</button></div>';
        }

?>

Functions.php

$function= $_POST['function']; 
$title = $_POST['title'];
if($function == "deletePost")
 deletePost($title)
 function deletePost($title){
$sql = "DELETE FROM blog WHERE Title = '$title';";
mysqli_query($mysqli, $sql);
}

Functions.js

$(document).ready(function(){
    $('#deletePost').on('click', function(){
        $.ajax({
            url: 'functions.php',
            data:{function: "deletePost", title: "how do I get the blog title here"}
            success: function(data){
         //confirmation of deletion
        }
        });
    });
});

Answer 1

Since you are expecting a POST request, you'll need to specify that while making the AJAX request.

$.ajax({
    url: 'functions.php',
    type: 'POST', // specify request method as POST
    ...
});

That should do it.

Answer 2

Try This

<?php
            include 'scripts/db_connect.php';
            include 'scripts/functions.php';
            sec_session_start();
            $sql = "SELECT * FROM blog";
            $result = mysqli_query($mysqli, $sql);
            while($row = mysqli_fetch_array($result))
            {
                echo'<div class="blog"><h3 class="blog">' . $row['Title'] . "</h3><h3>" . $row['Date'] . "</h3><h3>" . $row['Tag'] . "</h3><hr>";
                echo'<p class="blog">' . $row['Body'] . '</p><button id="editPost" type="button">Edit</button><a class="deletePost" rel="'. $row['Title'] .'" href="#" >Delete</a><button id="commentPost" type="button">Comment</button></div>';
            }

?>

$(document).ready(function(){
    $(".deletePost").on('click', function(){
        $.ajax({
            url: 'functions.php',
            type: 'POST',
            data:{function: "deletePost", title: $(this).attr('rel')}
            success: function(data){
         //confirmation of deletion
        }
        });
    });
});