How to specific pass fields in custom rest api for get product Information

Question

I'm creating custom rest API for getting a list of products. In my module, I have just use the getList function of ProductRepository. I need to pass select specific fields in API. so, how can I get that??

Note: In core API, we can get these response using below URL:

rest/V1/products?fields=items[name,qty,sku],total_count

I want to pass these fields programmatically.

Answer 1

you have an API(rest/V1/products) -you can use search Criteria.

API(rest/V1/products)

you can use search Criteria using Column name

    http://<magento_host>/rest/V1/products/?
    searchCriteria[filter_groups][0][filters][0][field]=name&
    searchCriteria[filter_groups][0][filters][0][value]={VALUE}&
    searchCriteria[filter_groups][0][filters][0][condition_type]‌​=eq

method type : GET

The system creates an array, as shown in the following pseudo-code.

searchCriteria => [
  'filterGroups' => [
    0 => [
      'filters' => [
         0 => [
           'field' => 'name',
           'value' => 'YOUR VALUE',
           'condition_type' => 'eq'
         ]
      ]
    ]
  ]