MySQL插入jQuery Validate插件

Question

我试图使用jQuery Validate（http://jqueryvalidation.org/）和PHP插入一些数据，但似乎无法使其工作。 我尝试了20种不同的东西，但没有运气。也许这只是我对jQuery缺乏了解，但这就是我在这里寻求帮助的原因，所以我们非常感谢任何帮助。 这是代码：

add_news.php

<?php include('_header.php'); ?>

<p>
    <form id="addnews" name="addnews" method="post" novalidate="novalidate">
        <fieldset>
              <label for="headline" id="headline">Overskrift</label>
              <input type="text" class="form-control" name="headline" required="">

              <label for="img1" id="img1">Billede 1</label>
              <input type="text" class="form-control" name="img1" required="">
              <label for="img2" id="img2">Billede 2</label>
              <input type="text" class="form-control" name="img2" required="">
              <label for="img3" id="img3">Billede 3</label>
              <input type="text" class="form-control" name="img3" required="">

              <label for="article" id="article">Nyhed</label>
              <textarea style="text-align:left;" name="article" class="form-control" required=""></textarea>
              </br>
              <input class="btn form-control" type="submit" name="submit" value="Tilføj">
        </fieldset>
    </form>

    <div id="success">
        <span class="green textcenter">
            <p>Nyheden er blevet tilføjet.</p>
        </span>
    </div>

    <div id="error">
        <span>
            <p>Der skete en fejl. Prøv igen.</p>
        </span>
    </div>
</p>

<script type="text/javascript">

// validate contact form
$(function() {
    $('#addnews').validate({
        rules: {
            headline: {
                required: true,
                minlength: 5
            },
            img1: {
                required: true,
                extension: "png|jpg|gif"
            },
            img2: {
                required: true,
                extension: "png|jpg|gif"
            },
            img3: {
                required: true,
                extension: "png|jpg|gif"
            },
            article: {
                required: true,
                minlength: 50
            }
        },
        messages: {
            headline: {
                required: "Du skal skrive en overskrift",
                minlength: "Overskriften må ikke være under 5 tegn"
            },
            img1: {
                required: "Du skal indsætte et billede",
                extension: "Tilladte formatter: PNG, JPG, GIF"
            },
            img2: {
                required: "Du skal indsætte et billede",
                extension: "Tilladte formatter: PNG, JPG, GIF"
            },
            img3: {
                required: "Du skal indsætte et billede",
                extension: "Tilladte formatter: PNG, JPG, GIF"
            },
            article: {
                required: "Du skal skrive en nyhed",
                minlength: "Nyheden skal være på minimum 50 tegn"
            }
        },
        submitHandler: function(form) {

            var headline=$("#headline").val();
            var img1=$("#img1").val();
            var img2=$("#img2").val();
            var img3=$("#img3").val();
            var article=$("#article").val();

            $(form).ajaxSubmit({
                type:"POST",
                url:"add_news_process.php",
                dataType: "text",
                data: "headline="+headline+"&img1="+img1+"&img2="+img2+"&img3="+img3+"&article="+article,                
                success: function() {
                    $('#addnews :input').attr('disabled', 'disabled');
                    $('#addnews').fadeTo( "slow", 0.15, function() {
                        $(this).find(':input').attr('disabled', 'disabled');
                        $(this).find('label').css('cursor','default');
                        $('#success').fadeIn();
                    });
                },
                error: function() {
                    $('#addnews').fadeTo( "slow", 0.15, function() {
                        $('#error').fadeIn();
                    });
                }
            });
        }
    });
});
</script>

<?php include('_footer.php'); ?>

add_news_process.php

<?php
if(isset($_POST)){
    try {
        $date = date('d/m/Y');
        require_once('config.php');
        $db = new PDO('mysql:host='. DB_HOST .';dbname='. DB_NAME . ';charset=utf8', DB_USER, DB_PASS);
        $insertNews = $db->prepare("INSERT INTO news VALUES (NULL, STR_TO_DATE(':datec', '%m/%d/%Y'), :head, :img1, :img2, :img3, :article)");
        $insertNews->bindValue(':datec', $date, PDO::PARAM_STR);
        $insertNews->bindValue(':head', $_POST['headline'], PDO::PARAM_STR);
        $insertNews->bindValue(':img1', $_POST['img1'], PDO::PARAM_STR);
        $insertNews->bindValue(':img2', $_POST['img2'], PDO::PARAM_STR);
        $insertNews->bindValue(':img3', $_POST['img3'], PDO::PARAM_STR);
        $insertNews->bindValue(':article', $_POST['article'], PDO::PARAM_STR);
        $insertNews->execute();

        echo 'Nyhed tilføjet.';

    } catch(PDOException $e) {
        echo 'Error: ' . $e->getMessage();
    }
}
?>

此过程的结果是：error: function(){}

我希望我能清楚地解释自己。如果没有，请告诉我。