Conversation Memory Chain doesn't seems to work

[ilyasa1211]

I tried to follow the steps from this link with a little tweak: https://tmc.github.io/langchaingo/docs/tutorials/basic-chat-app#step-6-add-a-conversation-chain

But it didn't seems to remember from the memory.

package main

import (
	"bufio"
	"context"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/tmc/langchaingo/chains"
	"github.com/tmc/langchaingo/llms/openai"
	"github.com/tmc/langchaingo/memory"
)

func main() {
	// Initialize LLM
	llm, err := openai.New(
		openai.WithBaseURL("http://localhost:11434/v1"), // ollama's OpenAI-compatible API
		openai.WithToken("token"),
		openai.WithModel("gemma3:1b-it-qat"),
	)

	if err != nil {
		log.Fatal(err)
	}

	// Create conversation memory
	chatMemory := memory.NewConversationBuffer()

	// Create conversation chain
	// The built-in conversation chain includes a default prompt template
	// and handles memory automatically
	conversationChain := chains.NewConversation(llm, chatMemory)

	ctx := context.Background()
	reader := bufio.NewReader(os.Stdin)

	fmt.Println("Advanced Chat Application (type 'quit' to exit)")
	fmt.Println("----------------------------------------")

	for {
		fmt.Print("You: ")
		input, _ := reader.ReadString('\n')
		input = strings.TrimSpace(input)

		if input == "quit" {
			break
		}

		// Run the chain with the input
		result, err := chains.Run(ctx, conversationChain, input)
		if err != nil {
			fmt.Printf("Error: %v\n", err)
			continue
		}

		fmt.Printf("AI: %s\n\n", result)
	}

	fmt.Println("Goodbye!")
}

Demo result (shows it doesn't have any idea what's my name after I told it):

Advanced Chat Application (type 'quit' to exit)
----------------------------------------
You: hello, my name is yasa
AI: Hello yasa! It’s nice to meet you. I’m glad you’re here. 😊

You: what is my name?
AI: I’m sorry, I don’t have access to that information. I’m still under development and learning to access personal details. 😊

[uvulpos]

Seems like it is not automatically managed, so I added all relevant messages from my database to the memory. Maybe this helps

	chatMemory := memory.NewConversationBuffer()

	err = chatMemory.ChatHistory.AddUserMessage(context.Background(), "antworte als Yoda aus Star Wars auf alle Fragen immer in Reimform.")
	if err != nil {
		panic(err)
	}

	conversationChain := chains.NewConversation(llm, chatMemory)

	response, responseErr := chains.Run(
		context.Background(),
		conversationChain,
		ragPrompt,
	)
	if responseErr != nil {
		return "", responseErr
	}