PostgreSQL Vector Type Nightmare: Why Rails Shows String But Database Says Vector

In this video, I document a frustrating but common issue when working with pgvector in Rails applications. Despite properly defining a vector column in my PostgreSQL database, ActiveRecord was incorrectly displaying the embedding data as a string instead of a vector type. Join me as I troubleshoot this data type mismatch, explore why Rails was serializing the vector column as a string, and share the solution that finally made vector embeddings work correctly with ActiveRecord. If you're building AI applications with Rails and pgvector, this is a must-watch debugging session!