Prompt Template integration

[andreibondarev]

langchainrb offers a way to manage prompt templates: https://github.com/patterns-ai-core/langchainrb?tab=readme-ov-file#prompt-templates. It offers a way to save templates to json or yaml files but to a database. Keeping prompts in a database table allows you to modify prompts on the fly and version them if needed.

• Create a generator that creates a prompts table and an ActiveRecord model with a simple field to store the prompt template text. Example: https://github.com/patterns-ai-core/langchainrb/blob/main/lib/langchain/vectorsearch/prompts/rag.yaml#L6-L11

[sergiobayona]

possible api:

Prompt is an ActiveRecord model.

Creates instance of a prompt:

p = Prompt.new(template: "Tell me a {adjective} joke about {subject}.")
p.save # persist to db

Renders prompt template:

p.render({adjective: "funny", subject: "birds"})
# => "Tell me a funny joke about birds"

Return the template variables:

p.template_variables 
# => ['adjective', 'subject']

[andreibondarev]

@sergiobayona Makes sense to me!

[sergiobayona]

see https://github.com/patterns-ai-core/langchainrb_rails/pull/101