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  1. English documentation 1.5
  2. Developer Guide
  3. Developer tutorials
  4. Using the PrestaShop Web Service

Chapter 4 - Retrieve Data - Retrieving a Client

Goal: List and display information from a customer. Difficulty: * Problem: How to create a system that allows customers using IDs to retrieve customer records?

Preparation

Duplicate the file list_the_clients.php that was created in the previous chapter, rename it to R-CRUD.php, and put it at the root of your Web server. If you didn't finish the previous chapter, duplicate the file 0-CustomersList.php and rename it R-CRUD.php.

In the XML data that we retrieved, which contains the list of clients, we will find all the XLinks providing access to customer information.

<customers>
	<customer id="1" xlink:href="http://example.com/api/customers/1" />
</customers>

Example

The XLink for the customer tag with ID 1 is: http://example.com/api/customers/1

This link retrieves a new XML file, which contains information about the client who has ID 1.

In order to manage access to different clients, we will associate page identifiers with customers via a GET parameter named "id". The link http://example.com/R-CRUD.php?id=1 we will display the file for customer 1.

We must change the table in the file created in the previous chapter to add a link to future customer files. We will have to isolate the display from the display list of a particular customer.

In order to do this, we must isolate the display of the list by checking that the "id" GET parameter property is not present when viewing your list. We do this using isset().

Calling the web service is exactly the same as displaying the list, except that if you need to add the ID element to the table whose value is the id of a client.

Currently, we are using the customers or clients resources. If we'd been trying to change the countries resources, this ID would have been a country ID.

$opt['resource'] = 'customers';
$opt['id'] = $_GET['id'];
$xml = $webService->get($opt);

Use isset() before setting an ID enables you to easily carry out everything in this chapter.

Accessing resources is performed as above for displaying the list, because the tags that interest us are children of the customers tag.

$resources = $xml->customers->children();

This path can be created in another way (here in an HTML table):

foreach ($resources as $key => $resource)
	echo 'Name of field: ' . $key . ' - Value: ' . $resource . '<br />';

You now have everything needed to create a script to both list and display information for a particular client.

Try creating this R-CRUD.php script. If you encounter any difficulties, follow the example from the 1-Retrieve.php file, which contains the result to which you should get.

In another chapter, we will see how to filter, sort and limit the number of items displayed in the list. If you're in a hurry to implement these features, you can find more information in Chapter 8.

PreviousChapter 3 - First steps - Access the Web service and list clientNextChapter 5 - Modification - Update client

Last updated 4 years ago

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