
Although Easy Digital Downloads shows the total spent for each customer under **Downloads → Reports → Customers**, there’s no way for a customer themselves to see how much they have spent on your store.

The following code will allow you to show a logged in customer how much they’ve spent, anywhere on your website.

Copy and paste the following function (mind the opening PHP tag) into your child theme's **functions.php** or custom plugin:

```php
/**
 * Get the total spent for a customer.
 * When no customer is passed into the function, it will get the currently logged in user's total spent
 *
 * Usage: <?php echo andrew_edd_get_total_spent_for_customer(); ?>
 */
function andrew_edd_get_total_spent_for_customer( $user_id = '' ) {

	// if no user ID is passed in, default to the currently logged in user.
	if ( ! $user_id ) {
		$user_id = get_current_user_id();
	}

	// Get customers.
	$customers = EDD()->customers->get_customers(
		array(
			'number'  => -1,
			'user_id' => $user_id
		)
	);

	// Get customers purchase values.
	$purchase_values = array();

	if ( $customers ) {
		foreach ( $customers as $customer ) {
			$purchase_values[] = $customer->purchase_value;
		}
	}

	// Get the total spent and format it.
	$total_spent = edd_currency_filter( edd_format_amount( array_sum( $purchase_values ) ) );

	// Return the amount the customer has spent.
	return $total_spent;
}
```

Then, you can simply call:

```php
<?php echo andrew_edd_get_total_spent_for_customer(); ?>
```

Alternatively, if you need to show only a specific customer’s total spent, you can pass a user ID into the function like this:

```php
<?php echo andrew_edd_get_total_spent_for_customer( 50 ); ?>
```


Although Easy Digital Downloads shows the total spent for each customer under Downloads → Reports → Customers, there’s no way for a customer themselves to see how much they have spent on your store.

Show customers how much they have spent on your Easy Digital Downloads store


I’ve just started using HTML5 video on my website but when I tried to upload a .webm file to WordPress' Media Manager, it presented me with an error.

> myvideo.webm has failed to upload due to an error.
> Sorry, this file type is not permitted for security reasons.

It turns out that WordPress doesn't have .webm as part of it's allowed mime types by default, so we need to add it ourselves.

A quick search on the WordPress core files leads us to the `wp_get_mime_types()` function in `wp-includes/functions.php`. Inside this function, WordPress provides us with a filter called mime_types, perfect.

Now that we have a suitable filter, we just need to hook onto it and add our new mime type to the existing mime type array. I’ve added webm in this example, but if you needed to add another mime type, you would simply replace the values with your own. Add the following to your functions.php:

``` php
function my_theme_custom_upload_mimes( $existing_mimes ) {
	// Add webm to the list of mime types.
	$existing_mimes['webm'] = 'video/webm';

	// Return the array back to the function with our added mime type.
	return $existing_mimes;
}
add_filter( 'mime_types', 'my_theme_custom_upload_mimes' );
```

Note: Many tutorials on this subject suggest using the `upload_mimes` filter, but if you’re not careful, you’ll actually replace the entire mime type array, rather than adding to it. This means you won’t be able to upload any file type, but the one you added! not exactly what we want.

If you want to double-check everything went okay, simply dump the contents of the wp_get_mime_types() function directly to your page using a WordPress action hook like template_redirect:

```php
function my_theme_output_upload_mimes() {
	var_dump( wp_get_mime_types() );
}
add_action( 'template_redirect', 'my_theme_output_upload_mimes' );
```

Refresh your website and you’ll see the mime type array (which is really long) with the new mime type added.

And of course to really test that everything worked as expected, upload your file to the media manager which should now upload perfectly.

How to add a new mime type to WordPress

By default, an Easy Digital Downloads powered website has a page that displays all the downloads for you. If you append /downloads to the end of your website URL you will see this page. This is called the **custom post type archive** page.



If you display your downloads on your website via the downloads shortcode, you may wish to disable this page entirely. I’ve noticed many people don’t even realise such a page exists on their website.

Simply add the following to your theme’s **functions.php** (or plugin):

```php
if ( ! defined( 'EDD_DISABLE_ARCHIVE' ) ) {
	define( 'EDD_DISABLE_ARCHIVE', true );
}
```

Finally, you should visit the Permalinks admin page at **Settings &rarr; Permalinks**. By simply by visiting this page (you don’t need to save) it will flush WordPress’ rewrite rules.

If you don’t flush the rewrite rules, chances are you will still see the custom post type archive page, even after you have entered the code above and refreshed the browser.

Disabling the custom post type archive page in Easy Digital Downloads


When working with a WordPress child theme, you may need to change the functionality of the theme without touching any code in the parent theme. This could be as simple as removing functionality, moving a function to a different hook, or adding your own custom functionality.

In this tutorial we're going to move a function to a different hook. One such example would be to move the navigation (assuming it's&nbsp;added via a hook) from above the header to below the header, changing the overall appearance of our theme.

Most themes have custom hooks spread throughout the theme that were added with the [do_action](http://codex.wordpress.org/Function_Reference/do_action) function. Having these custom hooks available to us in our themes make it very easy to make some fast customizations.

## remove_action() & add_action()


We'll use WordPress' [remove_action](http://codex.wordpress.org/Function_Reference/remove_action) and [add_action](http://codex.wordpress.org/Function_Reference/add_action) functions, first removing the parent theme's navigation, and then adding it back into our child theme at the new location.

If you find the original action hook in the parent theme that added the functionality, it might look something like this:


```php
add_action( 'my_theme_before_header', 'my_theme_do_nav' );
```

In the example above we can see there is a function called **my_theme_do_nav**. This function might include the code to retrieve the WordPress menu and some other custom code.

This function is then being loaded on&nbsp;a custom hook called **my_theme_before_header**. This custom hook would naturally appear in the parent theme, somewhere before the header.

## Removing the navigation

By copying and pasting the same code into the child theme's <em>functions.php</em>, replacing **add_action** with **remove_action**, we can remove the entire navigation. The first and second parameters must match exactly.

```php
remove_action( 'my_theme_before_header', 'my_theme_do_nav' );
```

## Adding the navigation back in

Now that the navigation has been removed, we'll add it back in, but after the header. All we need to do is change the hook in the first parameter to reflect our new location. Let's assume there's a custom hook in the parent theme called **my_theme_after_header**.

```php
add_action( 'my_theme_after_header', 'my_theme_do_nav' );
```

## Child functions are loaded before the parent's

Stopping there would likely yield no results.&nbsp;One important thing to note is that the child theme's functions are loaded **before** the parent theme's functions. We need to create a new function and load it&nbsp;on to a suitable action hook, so that our remove_action and add_action are executed properly.

The [template_redirect()](http://codex.wordpress.org/Plugin_API/Action_Reference/template_redirect) action hook is one such suitable hook. The WordPress Codex states that it is **run before the determination of the template file to be used to display the requested page**. By using template_redirect, we can be sure our actions will overwrite the parent theme's actions:


```php
function my_theme_shift_navigation() {
	remove_action( 'my_theme_before_header', 'my_theme_do_nav' );
	add_action( 'my_theme_after_header', 'my_theme_do_nav' );
}
add_action( 'template_redirect', 'my_theme_shift_navigation' );
```

And that's it. The simple function above first removes the navigation from the parent theme, then adds it back in at a new location, all without touching the parent theme's code.


Learn how to modify the functionality of the child theme, without touching any code in the parent theme.

Kia ora!I'm Andrew Munro

Show customers how much they have spent on your Easy Digital Downloads store

How to add a new mime type to WordPress

Disabling the custom post type archive page in Easy Digital Downloads

Modify a child theme's functionality using action hooks