Mfrhtyj

I am trying to get product collection using Rest Api
Below is my code
file: ProductsManagementInterface.php

interface ProductsManagementInterface {

/**

 * GET for Products api

 * @param string $param

 * @return array

 */

public function getProducts($param); }

webservice define in 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 method="GET" url="/V1/productcollection/products/:param">

        <service class="VendorProductCollectionApiProductsManagementInterface" method="getProducts"/>

        <resources>

            <resource ref="anonymous"/>

        </resources>

    </route>

</routes>

model file

<?php





namespace VendorProductCollectionModel;



class ProductsManagement implements VendorProductCollectionApiProductsManagementInterface

{



    protected $_categoryFactory;

    protected $_category;

    protected $_categoryRepository;

    protected $_storeManager;

    protected $jsonHelper;



    public function __constructor(

    MagentoCatalogModelCategoryFactory $categoryFactory,

    MagentoCatalogHelperCategory $category,

    MagentoCatalogModelCategoryRepository $categoryRepository,

    MagentoFrameworkJsonHelperData $jsonHelper,

    MagentoStoreModelStoreManagerInterface $storeManager

    ){

        $this->_categoryFactory = $categoryFactory;

        $this->_category = $category;

        $this->_categoryRepository = $categoryRepository;

        $this->jsonHelper = $jsonHelper;

        $this->_storeManager = $storeManager;

    }

    /**

     * Return mixed.

     *

     * @api

     * @param string $param.

     * @return array.

     */

    public function getProducts($param)

    {

        $json = $this->getJsonArrayProductFromCategory($param);

        $decodedData = $this->jsonHelper->jsonDecode($json);

        return $decodedData;

        //return 'hello api GET return the $param ' . $param;

    }



    public function getJsonArrayProductFromCategory($id){

        $category =  $this->_categoryFactory->create()->load($id);

        $categoryProducts = $category->getProductCollection()

                             ->addAttributeToSelect('*');

        $json= array();

        $i=0;



        foreach ($categoryProducts as $product) 

        {

                $productData['sku'] = $product->getSku();

                $productData['name'] = $product->getName();

                $productData['price'] = $product->getPrice();

                $productData['url'] = $product->getProductUrl();

                $json[$i]=$productData;

                $i++;

        }

        return $json; 

    }

}

My url is

http://domian.com/rest/V1/productcollection/products/5

but it give

There are 2 problems in your code first one is you define the wrong __constructor

Change your __constructor to __construct like,

public function __construct(

        MagentoCatalogModelCategoryFactory $categoryFactory,

        MagentoCatalogHelperCategory $category,

        MagentoCatalogModelCategoryRepository $categoryRepository,

        MagentoFrameworkJsonHelperData $jsonHelper,

        MagentoStoreModelStoreManagerInterface $storeManager

    ){

        $this->_categoryFactory = $categoryFactory;

        $this->_category = $category;

        $this->_categoryRepository = $categoryRepository;

        $this->jsonHelper = $jsonHelper;

        $this->_storeManager = $storeManager;

    }

and run the di:compile from your Magento 2 root command line,

php bin/magento setup:di:compile

and the second problem is you are passing the Array instead of string to this line,

    $decodedData = $this->jsonHelper->jsonDecode($json);

I am not sure what kind of output format you want but to check if it's working for you can remove this like and just return $json like this,

    /**

     * Return mixed.

     *

     * @api

     * @param integer $param.

     * @return array.

     */

    public function getProducts($param)

    {

        $json = $this->getJsonArrayProductFromCategory($param);

        return $json;

    }