I'm trying to get a working contact form on my website and am following this article's [guide](http://blog.teamtreehouse.com/create-ajax-contact-form). The guide gives a php script to handle the post, but I'm using a create-react-app and I don't know how to include the `mailer.php` file into the project. 

form
====

```
   <form id="contact-form" name="c-form" method="post" action="mailer.php">
                                        <div className="input-field">
                                            <input
                                                id="first_name"
                                                type="text"
                                                className="validate"
                                                name="first_name"
                                                required/>
                                            <label for="first_name">Name</label>
                                        </div>
                                        <div className="input-field">
                                            <input id="sub" type="text" className="validate" name="sub"/>
                                            <label for="sub">Subject</label>
                                        </div>
                                        <div className="input-field">
                                            <input id="email" type="email" className="validate" name="email" required/>
                                            <label for="email">Email</label>
                                        </div>
                                        <div className="input-field">
                                            <textarea
                                                id="textarea1"
                                                className="materialize-textarea"
                                                name="message"
                                                required></textarea>
                                            <label for="textarea1">Message</label>
                                        </div>
                                        <div className="contact-send">
                                            <button
                                                id="submit"
                                                name="contactSubmit"
                                                type="submit"
                                                value="Submit"
                                                className="btn waves-effect">Send
                                            </button>
                                        </div>
                                    </form>

```

mailer.php
==========

```
<?php

    // Only process POST reqeusts.
    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // Get the form fields and remove whitespace.
        $name = strip_tags(trim($_POST["name"]));
                $name = str_replace(array("\r","\n"),array(" "," "),$name);
        $email = filter_var(trim($_POST["email"]), FILTER_SANITIZE_EMAIL);
        $message = trim($_POST["message"]);

        // Check that data was sent to the mailer.
        if ( empty($name) OR empty($message) OR !filter_var($email, FILTER_VALIDATE_EMAIL)) {
            // Set a 400 (bad request) response code and exit.
            http_response_code(400);
            echo "Oops! There was a problem with your submission. Please complete the form and try again.";
            exit;
        }

        // Set the recipient email address.
        // FIXME: Update this to your desired email address.
        $recipient = "jportorreal77@gmail.com";

        // Set the email subject.
        $subject = "New contact from $name";

        // Build the email content.
        $email_content = "Name: $name\n";
        $email_content .= "Email: $email\n\n";
        $email_content .= "Message:\n$message\n";

        // Build the email headers.
        $email_headers = "From: $name <$email>";

        // Send the email.
        if (mail($recipient, $subject, $email_content, $email_headers)) {
            // Set a 200 (okay) response code.
            http_response_code(200);
            echo "Thank You! Your message has been sent.";
        } else {
            // Set a 500 (internal server error) response code.
            http_response_code(500);
            echo "Oops! Something went wrong and we couldn't send your message.";
        }

    } else {
        // Not a POST request, set a 403 (forbidden) response code.
        http_response_code(403);
        echo "There was a problem with your submission, please try again.";
    }

?>

```

reactjs
=======

```
componentDidMount() {

    var $form = $("#contact-form");
    var formData = $form.serialize();

    $form.submit(function (event) {
        // Stop the browser from submitting the form.
        event.preventDefault();

        // TODO
        $.ajax({
            type: 'POST',
            url: $form.attr('action'),
            data: formData,
            success: function (response) {
                console.dir(response);
            },
            fail: function (err) {
                console.dir(err);
            }
        });

    });

}

```

problem
=======

whenever I submit the form I get a 

`POST http://localhost:3000/mailer.php 404 (Not Found)`

error. How do I get this working.