Sandbox Dashboard part 3: Customers

A continuation on how to make a dashboard for your sandbox developer account


This is the third post in our series illustrating how to make a dashboard for your sandbox developer account. For more context, take a peek at Part 1 and Part 2.

In previous posts, we added the ability to view location information as well as a full record of all transactions. For the third installment of our Sandbox Dashboard series, we’ll add functionality to display and interact with our sandbox customers. Let’s take a look at where we ended up last time:

Adding additional structure

First things first, we’re going to add a new item in the navigation bar so that we can access the customers page, as well as create a new php file for all the code. Now our navbar looks like this:

<div class="nav-item">
    <a href="/locations.php">Locations</a>
    <a href="/transactions.php">Transactions</a>
    <a href="/customers.php">Customers</a>

To display the customers, we can take a similar approach to the transaction page by using a table of all customers and their associated information. To do this, we can call the ListCustomers endpoint and iterate though the array of customers that gets returned.

    //Use the access token from the session to access the API
    $customersApi = new SquareConnect\Api\CustomersApi();
    try {
        $result = $customersApi->listCustomers(); ?>

        <div id="table" style="display:flex;flex-direction:column;">
            <div class="row">
            <div>Created at</div>
            <div>Email Address</div>
            <div>Phone Number</div>
    <?php foreach ($result->getCustomers() as $customer) {
        <div class="row">
            <div class="timestamp">
            <?php echo date("g:ia \<\b\\r\> F NS, Y", strtotime($customer->getCreatedAt())); ?>

            <?php echo $customer->getGivenName(),' ',$customer->getFamilyName() ?>

            <?php echo $customer->getEmailAddress() ?>

            <?php echo  $customer->getPhoneNumber() ?>

            <div style="text-align: center;">
            <a href="#" onclick="deleteCustomer(this)" class="delete" customerId="<?php echo $customer->getId(); ?>">Delete</a>

Now we have a new page listing all sandbox customers as well as any other contact information customers choose to provide: an email address or phone number, as well as a link to delete the customer. One of the most important uses of a dashboard or any GUI is to give you access to run commands in a way that is usually a little easier than running them from the command line.

Deleting Customers

Whenever you hit the “delete” button, it calls a javascript function that initiates an AJAX request to a PHP script that does the deleting and sends the id of the customer to be deleted as a POST variable. It also creates a dialog to confirm the deletion, as well as some logging to the developer console if something went wrong.

function deleteCustomer(element){
  if(!confirm('Are you sure you want to delete this customer?')){
    return false;
  var location = document.getElementById('location-id').value;
  var xhttp = new XMLHttpRequest();
  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        alert('something went wrong, check the console');
  };"POST", "delete-customer.php", true);
  xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

The PHP script that actually deletes a customer is very simple. It does a couple error checks, and then uses Square’s PHP SDK to call the deleteCustomer() method on the supplied id.

//Start a session with the client
//Check for some basic errors.
if (!isset($_POST['customerId'])) {
    echo "No customer id was supplied";
if (!isset($_SESSION["at"])) {
    echo "Access token isn't set";
$api_instance = new SquareConnect\Api\CustomersApi();
$customer_id = $_POST['customerId']; // string | The ID of the customer to delete.
try {
    $result = $api_instance->deleteCustomer($customer_id);
    echo "deleted";
} catch (Exception $e) {
    echo 'Exception when calling CustomersApi->deleteCustomer: ', $e->getMessage(), PHP_EOL;

That sums it up for our sandbox dashboard customer’s tab!

If you think you might be interested in working on projects like these, take a look at our open positions on Our developer’s team is hiring!