Shopify GraphQL API. Search products and its variants

graphql.rb

query = %{ { products(first: 20, query: "title:*bik*") 
               { edges { node { id
                                title 
                                priceRange { maxVariantPrice { amount } minVariantPrice { amount } }
                                featuredImage { transformedSrc altText }
                                variants(first:10) { edges { node { id title price } } } } } } } }

  url = 'https://dev-store-rdigital.myshopify.com/admin/api/2020-07/graphql.json'
  def api_headers
    {
      'Content-type' => 'application/json',
      'X-Shopify-Access-Token' => api_token
    }
  end

  HTTParty.post(url, headers: shop.api_headers, body: { query: query, variables: ''}.to_json)