fix acts_as delegation to return self instead of RubyLLM by kieranklaassen · Pull Request #82 · crmne/ruby_llm

kieranklaassen · 2025-03-31T23:00:40Z

I had this issue in Rails:

Loading development environment (Rails 7.2.2.1)
cora-app(dev)> Chat.last.class
  Chat Load (1.2ms)  SELECT "chats".* FROM "chats" ORDER BY "chats"."id" DESC LIMIT $1  [["LIMIT", 1]]
=> Chat(id: integer, model_id: string, account_id: integer, created_at: datetime, updated_at: datetime)
cora-app(dev)> Chat.last.with_tools(StoreMemory).class
  Chat Load (0.8ms)  SELECT "chats".* FROM "chats" ORDER BY "chats"."id" DESC LIMIT $1  [["LIMIT", 1]]
  Message Load (1.0ms)  SELECT "messages".* FROM "messages" WHERE "messages"."chat_id" = $1 ORDER BY "messages"."created_at" ASC  [["chat_id", 17]]
  ToolCall Load (0.7ms)  SELECT "tool_calls".* FROM "tool_calls" WHERE "tool_calls"."message_id" = $1

with_tools does not return the proper class so the messages are not created.

The issue was that and methods were returning the RubyLLM::Chat instance instead of the ActiveRecord model, which broke the persistence chain when calling .ask() after .with_tools(). This fix: 1. Overrides the with_tool and with_tools methods to return self (the ActiveRecord model) 2. Removes these methods from the delegation list 3. Adds test to verify user messages are persisted when using method chains Fixes issue where user messages weren't being saved to the database when using the method chain.

Extended the fix to apply to all chainable methods: - with_model - with_temperature - on_new_message - on_end_message These methods now return the ActiveRecord model instead of the RubyLLM::Chat instance, ensuring method chains maintain persistence capabilities. Added comprehensive test case that verifies all chainable methods return the correct type and properly persist user messages when used in chains.

Refactored the acts_as_chat and acts_as_message methods to improve readability by removing unnecessary comments and ensuring consistent formatting. Updated the on_new_message and on_end_message methods to use shorthand block syntax for better clarity. Additionally, introduced shared examples in tests to validate chainable methods and callbacks, ensuring they return the correct Chat instance. This enhances the maintainability of the code and improves test coverage for method chaining scenarios.

crmne · 2025-04-01T08:10:47Z

Hey @kieranklaassen when are the messages not created?

kieranklaassen · 2025-04-01T14:27:06Z

When you do this it won't create user messages:

chat = Chat.first
chat.with_tools(StoreMemory).ask(message) do |chunk|

end

You can see that because the class that with_tools return is a RubyLLM::Chat and not a Chat from active record.

crmne

I can accept it if you can keep the original test as well!

crmne · 2025-04-01T14:30:12Z

-  it 'persists chat history' do # rubocop:disable RSpec/ExampleLength,RSpec/MultipleExpectations
-    chat = Chat.create!(model_id: 'gpt-4o-mini')
-    chat.ask("What's your favorite Ruby feature?")
-
-    expect(chat.messages.count).to eq(2)
-    expect(chat.messages.first.role).to eq('user')
-    expect(chat.messages.last.role).to eq('assistant')
-    expect(chat.messages.last.content).to be_present
-    expect(chat.messages.last.input_tokens).to be_positive
-    expect(chat.messages.last.output_tokens).to be_positive


why removing this very important test?

Yes, adding that back was a mistake. I was moving quickly yesterday.

🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>

kieranklaassen · 2025-04-01T14:43:15Z

@crmne looked it over and should be good to go now. TY

crmne

LGTM

kieranklaassen · 2025-04-01T14:50:39Z

@crmne would you mind guiding me in the failing tests on CI? Locally all pass

crmne · 2025-04-01T15:20:10Z

@kieranklaassen the error message there tells you all you need to know: there are some VCR cassettes missing. I tried it locally and that was the case.

…th tool functionality Added new VCR cassettes to persist messages and tool calls for ActiveRecord acts_as chainable methods. These cassettes capture interactions with the OpenAI API for arithmetic operations, ensuring accurate testing of user message persistence and tool functionality. - Created `activerecord_actsas_chainable_methods_persists_messages_after_chaining.yml` - Created `activerecord_actsas_with_tools_functionality_persists_user_messages.yml` This addition enhances the test coverage for the integration of tools within the ActiveRecord methods.

kieranklaassen · 2025-04-01T19:42:53Z

@crmne I deleted and added VCR cassettes again. How do I run the CI here?

codecov · 2025-04-02T07:38:55Z

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.27%. Comparing base (81e8d55) to head (07aefd4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #82      +/-   ##
==========================================
+ Coverage   92.11%   92.27%   +0.15%     
==========================================
  Files          71       71              
  Lines        2588     2640      +52     
  Branches      378      380       +2     
==========================================
+ Hits         2384     2436      +52     
  Misses        204      204

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kieranklaassen added 3 commits March 31, 2025 16:00

kieranklaassen changed the title ~~fix acts as~~ fix acts_as delegation to return self instead of RubyLLM Mar 31, 2025

kieranklaassen added 3 commits April 1, 2025 09:31

Update acts_as.rb

b61f79c

Update acts_as.rb

fe7c61b

Merge branch 'main' into fix_acts_as

9a8fade

crmne requested changes Apr 1, 2025

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kieranklaassen and others added 2 commits April 1, 2025 07:40

fix: restore important chat history and tool call persistence tests

c27950b

🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>

refactor: remove unused create_chat_and_ask method

9693126

🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>

kieranklaassen requested a review from crmne April 1, 2025 14:43

crmne approved these changes Apr 1, 2025

View reviewed changes

kieranklaassen and others added 2 commits April 1, 2025 12:36

Merge branch 'main' into fix_acts_as

b3a242c

Merge branch 'main' into fix_acts_as

07aefd4

crmne merged commit da64c9a into crmne:main Apr 2, 2025
7 checks passed

parruda pushed a commit to parruda/ruby_llm that referenced this pull request Nov 18, 2025

fix acts_as delegation to return self instead of RubyLLM (crmne#82)

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kieranklaassen commented Mar 31, 2025 •

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