How to Get API Paramter?

Question

I use a custom API with Delete Method. I would get this paramter.

{
    "id":"1"
}

How can i get it in my api response?

etc/webapi.xml

<?xml version="1.0"?>
<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Webapi:etc/webapi.xsd">
    <route url="/V1/news/news/delete" method="DELETE">
        <service class="[Vendor]\[Module]\Api\NewsInterface" method="destroy"/>
        <resources>
            <resource ref="anonymous"/>
        </resources>
    </route>
</routes>

Api/NewsInterface.php

<?php
namespace [vendor]\[module]\Api;

/**
* @api
*/

interface NewsInterface
{

    /**
     * Return Added wishlist item.
     *
     * @param int $customerId
     * @return int
     *
     */

    public function destroy($customerId);

}

Model/NewsManagement.php

<?php
namespace [Vendor]\[Module]\Model;
use [Vendor]\[Module]\\Api\NewsInterface;

class NewsManagement implements NewsInterface
{
    protected $newsFactory;
    protected $request;

    public function __construct(
        \Magento\Framework\Webapi\Rest\Request $request,
        \[Vendor]\[Module]\\Model\NewsFactory $newsFactory
    )
    {
        $this->newsFactory = $newsFactory;
        $this->request = $request;
    }
    public function destroy($customerId) {
        return $customerId;
    }

}

Answer 1

You need to define the parameter that will be sent by Magento to the service contract from the webapi.xml: /:customerId

Your webapi.xml file will look like this:

<?xml version="1.0"?>
<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Webapi:etc/webapi.xsd">
    <route url="/V1/news/news/delete/:customerId" method="DELETE">
        <service class="[Vendor]\[Module]\Api\NewsInterface" method="destroy"/>
        <resources>
            <resource ref="anonymous"/>
        </resources>
    </route>
</routes>

And then you can make a DELETE request to /V1/news/news/delete/1 to remove the item associated with customerId 1.

Here is how Magento has implemented the DELETE customer:

• webapi.xml

• service contract

• service contract implementation

Answer 2

you have change parameters name $customerId to $id at both interface and model class.

<?php
namespace [vendor]\[module]\Api;

/**
* @api
*/

interface NewsInterface
{

    /**
     * Return Added wishlist item.
     *
     * @param int $id
     * @return int
     *
     */

    public function destroy($id);

}

and Model/NewsManagement.php

<?php
namespace [Vendor]\[Module]\Model;
use [Vendor]\[Module]\\Api\NewsInterface;

class NewsManagement implements NewsInterface
{
    protected $newsFactory;
    protected $request;

    public function __construct(
        \Magento\Framework\Webapi\Rest\Request $request,
        \[Vendor]\[Module]\\Model\NewsFactory $newsFactory
    )
    {
        $this->newsFactory = $newsFactory;
        $this->request = $request;
    }
     /**
     * @inheritdoc
     *
     */
    public function destroy($id) {
        return $id;
    }

}