Webhook product update

[java2dev]

When a product is updated using a webhook I receive the whole attribute information in json, there's a way to know whish attribute has been update, because I need to send it using an external API so I can`t send all informations products after the product has been created.

[Kristina]

Hi,

Unfortunately, it's not possible to determine which attribute was updated from the returned JSON.
However, if you store the product's data each time you use a webhook, you can compare this to the data received the next time you call a webhook.

Hope this helps,

Kristina

[java2dev]

Thanks for you answer chris, the idea to compare it sounds good but is not optiomal for example for a huge call between shopify and an external API.

I have a doubt how can I get the id product from the webhook product update response?

Thanks.

[Kristina]

Yes, it wouldn't be particularly great for high volume calls, unfortunately. 

Are you also hoping to get the ID for the product you've just updated?
When you make a request to 

PUT /admin/products/#{id}.json

the response includes the product ID - like this:

HTTP/1.1 200 OK
{
  "product": {
    "id": 632910392,
    "title": "New product title",
    ...
    ... etc

You can take a look at the Update API Request docs here.  

Is that the product ID you're trying to grab?

Kristina

[java2dev]

webhookContent = "";

$webhook = fopen('php://input' , 'rb');
while (!feof($webhook)) {
    $webhookContent .= fread($webhook, 4096);
}
fclose($webhook);
$webhookContent = json_decode($webhookContent, true);
$id = $webhookContent['id'];
file_put_contents('webhook.xml', $id); // The id is printed in the file
$pr = new Product($id, $category, $credential, $shop); // at this level the $id is empty

Hi Cris, yes I try to print in a file the call so I use the code at top.

I don't know if I need to use $_GET or $_REQUEST to save the id value in a variable and then use it in "new product"

Thanks in advance.

[Kristina]

If you're hoping to update a product and then grab the ID returned from that updated product, you'd use PUT:

PUT /admin/products/#{id}.json

However, if you just want to grab the ID from an existing product and store it in a variable, you can return the same product object with GET:

GET /admin/products/#{id}.json?fields=id

which will only return the ID field and nothing else.

I typically grab requests using cURL with php. Something like this:

// create a new cURL resource
$ch = curl_init();

// set your URL to the request URL
curl_setopt($ch, CURLOPT_URL, "http://{shop}.myshopify.com/admin/products/#{id}.json");
curl_setopt($ch, CURLOPT_HEADER, 0);

// pass to the browser to return results of the request
$result = curl_exec($ch);

// closes cURL resource
curl_close($ch);

// all product information now exists in the $result variable 
// as JSON; you can use that with the JSON.decode to convert the 
// string to a PHP object (or array if you pass the 'true' optional 
// parameter

$product = JSON.decode($result)

// Then you can work with this $product variable as you
// would any other PHP array or object for presenting your data

What does 

php://input

represent in your code example?

[java2dev]

php://input

is to return the data received after updating a product. The idea I've found in this post.

so using only the variable $webhookContent in the output I print in the file this

{"id":8909989260,"title":"bicicleta","body_html":"\u003cp\u003etodo de reloj\u003c\/p\u003e","vendor":"Rolex","product_type":"Relojes","created_at":"2016-11-14T17:42:28-05:00","handle":"bicicleta","updated_at":"2016-11-28T12:50:22-05:00","published_at":"2016-11-16T22:10:00-05:00","template_suffix":null,"published_scope":"global","tags":"","variants":[{"id":30781726924,"product_id":8909989260,"title":"Default Title","price":"83510.00","sku":"12345678gh","position":1,"grams":1000,"inventory_policy":"deny","compare_at_price":null,"fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2016-11-14T17:42:28-05:00","updated_at":"2016-11-28T12:50:22-05:00","taxable":true,"barcode":"7037838585863837","image_id":null,"inventory_quantity":1,"weight":1.0,"weight_unit":"kg","old_inventory_quantity":1,"requires_shipping":true}],"options":[{"id":10760107980,"product_id":8909989260,"name":"Title","position":1,"values":["Default Title"]}],"images":[],"image":null}

For curl I have it yet in an API class to send data where I can create and synchronize content and image data with external API.

So my idea for the update , i.e I change the price so a json (as above) is generated after the event product/update , I search to use the id product json to send my XML to the external API. when I update using a static id into the product object

$pr = new Product(8909989260, $category, $credential, $shop);

and then Post the page.php the update is applicated. So the unic issue I've found is to get the product id updated to use it into $pr because after that I have all actions ready to send the data to the external API. I hope that I explained well the issue.

[Kristina]

I may be misunderstanding, but are you trying to grab (in this example), 8909989260? The product ID of returned from the request?

If so, when you decode the JSON with 

JSON.decode($result)

you should be able to access the product ID directly and pass that to:

$pr = new Product(8909989260, $category, $credential, $shop);

[java2dev]

Hi, chris, yes it's working , thank you.