If you are using Easy Digital Downloads, there may be times where you need to limit the purchase of a particular download on your site. There are plugins like the Purchase Limit extension, which allows you to globally limit the purchase of certain products. But what if you need to have Easy Digital Downloads limit one per customer?
As far as I know, there isn’t a plugin that lets you do this. But it isn’t that difficult to set up either.
Set up the checkout error message
We need to be able to let the customer know why they won’t be able to check out if they have a certain download in their cart.
add_action( 'edd_before_purchase_form', 'sd_set_purchase_limit_error' ); function sd_set_purchase_limit_error(){ $user_id = get_current_user_id(); // Get the current customer's ID $downloads = edd_get_users_purchased_products( $user_id ); // Get all of the products the customer has purchased in the past $can_checkout = true; // Allow checkout for now $in_cart = edd_item_in_cart( '57' ); // Check to see if our download is in the customer's cart. Change 57 to your download's ID. if ( $in_cart == true ){ // If the item isn't in the customer's cart we don't need to go any further. if ( ! empty( $downloads ) ){ // If the customer hasn't purchased anything before we don't need to go any further. foreach ( $downloads as $download ){ // Loop through each product the customer has purchased before. switch ( $download->ID ) { case '57': // If the customer has purchased the product we want to limit one per customer set an error message. Again change 57 to your product's ID. edd_set_error( 'already_purchased', apply_filters( 'edd_pc_error_message', __( 'You have already purchased the one-per-customer plugin. There is a limit of one per customer. You can log out and purchase with a different account, or remove it from your cart with the link above.' ) ) ); break; default: edd_unset_error( 'already_purchased' ); break; } } edd_print_errors(); // Display the errors on the checkout page. } } } |
Actually prevent checkout
So far all we have done is display an error message if the customer has purchased the download before. This won’t actually prevent them from going through the checkout process though.
Next, we need to use the edd_can_checkout filter to let the checkout process know that the customer can’t checkout while this product is still in their cart.
add_filter( 'edd_can_checkout', 'sd_limit_purchase' ); function sd_limit_purchase(){ $user_id = get_current_user_id(); // Get the current customer's ID $downloads = edd_get_users_purchased_products( $user_id );// Get all of the products the customer has purchased in the past $can_checkout = true; // Allow checkout for now $in_cart = edd_item_in_cart( '57' ); // Check to see if our download is in the customer's cart. Change 57 to your download's ID. if ( $in_cart == true ){ // If the item isn't in the customer's cart we don't need to go any further. if ( ! empty( $downloads ) ){ // If the customer hasn't purchased anything before we don't need to go any further. foreach ( $downloads as $download ){ // Loop through each product the customer has purchased before. switch ( $download->ID ) { case '57': // If the customer has purchased the product we want to limit one per customer set an error message. Again change 57 to your product's ID. $can_checkout = false; break; default: $can_checkout = true; break; } } } } return $can_checkout; } |
And that’s it!
Now if your customer has purchased a certain product before that you want to have Easy Digital Downloads limit one per customer, they will see an error message and the checkout fields will be removed from the checkout page.
Great little tutorial. I was able to modify this to use it globally to limit all downloads to one per person for a specific client case. This is the only tutorial on the web addressing this which is crazy. Thanks again!
Matt
Thanks Matt! I’m glad it helped.
Matt – I’m intrigued to know how you did this as all of my files are single purchase as well and it would be so much easier to have it set globally.
Also Scott – I modified the code slightly to block checkout and leave the nag message simultaneously. I also added a variable for the name of the download so the customer knew exactly which download to remove before moving on.
Guess gist embedding doesn’t work in comments, but that’s okay because it turned out my first version was blocked everyone from checking out, not just duplicates (oops). I have corrected it and now it only blocks repeats (YAY)
https://gist.github.com/adriannees/900242b5f19d9e1123a1708232595184
Hey Adrianne – sorry for the delay here. This is what I use:
https://gist.github.com/mwhiteley16/460d3978d8c60177bdbded943bbfcc26
Thankyou very much, but I have a question can we use multiple downloads id instead of the example 57?
You would need to put together an array of the download IDs that you want to check and loop through that. The example below should work, although I haven’t tested it.
https://gist.github.com/ScottDeLuzio/941eb623d86d796bd09f0b77c37d65cb
Hi
Thank you for your awesome post.
It seems new updates of this plugin doesn’t support EDD frontend submissions & Email tags….
There are several images and words about that features in this page (http://wpweb.co.in/documents/edd-purchase-limit/), but only in this page! and this plugin not support FES and Email tags for me.
Do you have any idea?
Regard
Sorry, I haven’t tested this with FES or Email Tags.
Hi,
Thank you very much for this, I’m curious if it would be possible to check all the downloads under a specific category, so every time I add a new download to that category I don’t have to edit this code?
Thanks in advance.
This is a somewhat tricky one. Currently Easy Digital Downloads uses custom post types for their downloads. That makes it fairly simple to use WP_QUERY to list all posts from the custom post type “download” in the taxonomy (category) you want. You can then loop through each post (download) that is returned, and feed the download ID to the code provided above.
With that said, EDD version 3.0 is coming out (no official release date has been announced yet). From what I understand, that version will be moving away from using custom post types and will instead have downloads in their own database table. While this will improve performance, it will make the WP_QUERY I mentioned not work anymore. I don’t know exactly how it will work in v3.0 so I can’t say for sure what code you would need…yet.
nice article, I have one more question,
how can I set a limit so that customer can add only one product at a time in a cart?
For example, if someone clicks on product A and after that go back and then click on product B, then plugin must show product B and remove the product A from cart automatically.
thanks
Hey Harvinder,
Great question! I haven’t personally used this, but it looks like there is a filter that will do the trick for you. Check out this post https://amdrew.com/restrict-cart-one-download-easy-digital-downloads/
hi,
is it possible to limit 1 trial on 1st purchase, after that user payment will get deducted immediately.
currently if we add a trial based product, the edd give trial on each checkout, so a same user can get multiple trials,
I don’t know if there is a way to limit trial purchases. As far as I can tell, a “trial” status isn’t stored with the list of the customer’s previously purchased products. There might be a way to do it, but it would need some digging to figure out.