interface conversion: interface {} is nil

[1hkr]

Hi!

For the last 2 weeks I have been having an issue with the get function.
All other functions work fine.

Here's a request example:
$weaviate_client.query.get class_name: 'Products', where: '{ operator: Equal, valueText: "1-dev", path: ["company"] }', fields: 'product_id', limit: "2"

Response:
{"Products"=>["interface conversion: interface {} is nil, not int"]}

It never happened before, and started happening since database version 1.26.4

[andreibondarev]

@1hkr So is it a change on the Weaviate side?

[1hkr]

I think so, nothing changed on my end. I'm using sandbox weaviate dbs that I renew every 14 days. The query.get requests on the new sandbox dbs all lead me to this issue.

However, on the weaviate console, the same get requests work fine

[andreibondarev]

@1hkr Have you tried running against your local self-hosted weaviate? I would probably pose a question in their Slack as well, to try and figure out what changed in the newest version.

[fearlessfrog]

We get the same error - @1hkr did you ever resolve this? Weaviate don't allow a downgrade that far back.

[1hkr]

I used a workaround: I created a WeaviateHelper running a weaviate graphql_query calling the weaviate API directly.

`require 'net/http'
require 'uri'
require 'json'

module WeaviateHelper
def self.run_graphql_query(query)
weaviate_url = Rails.env.development? ? Rails.application.credentials.weaviate_url : ENV['WEAVIATE_URL']
api_key = Rails.env.development? ? Rails.application.credentials.weaviate_api_key : ENV['WEAVIATE_API_KEY']
openai_api_key = Rails.env.development? ? Rails.application.credentials.chatgpt_api_key : ENV['OPENAI_KEY']

uri = URI.parse("#{weaviate_url}/v1/graphql")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == 'https'

request = Net::HTTP::Post.new(uri.request_uri)
request['Authorization'] = "Bearer #{api_key}"
request['Content-Type'] = 'application/json'
request['X-OpenAI-Api-Key'] = openai_api_key
request.body = { query: query }.to_json

begin
  response = http.request(request)
  if response.code == '200'
    return JSON.parse(response.body)
  else
    Rails.logger.error "GraphQL query failed: #{response.body}"
    return nil
  end
rescue => e
  Rails.logger.error "GraphQL request failed with error: #{e.message}"
  return nil
end

end
end`

[fearlessfrog]

Thank you for the reply, looks great and will try that.

[stockandawe]

@1hkr , thanks for sharing the WeaviateHelper workaround.

I have been having the same issue with query.get methods and the helper you suggested works great.