Ryan Chen
c95800e65d
Give the LangChain agent a save_user_memory tool so users can ask it to remember preferences and personal facts. Memories are stored per-user in a new user_memories table and injected into the system prompt on each conversation turn. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
74 lines
2.0 KiB
Python
74 lines
2.0 KiB
Python
import enum
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from dataclasses import dataclass
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from tortoise import fields
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from tortoise.contrib.pydantic import (
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pydantic_model_creator,
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pydantic_queryset_creator,
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)
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from tortoise.models import Model
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@dataclass
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class RenameConversationOutputSchema:
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title: str
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justification: str
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class Speaker(enum.Enum):
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USER = "user"
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SIMBA = "simba"
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class Conversation(Model):
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id = fields.UUIDField(primary_key=True)
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name = fields.CharField(max_length=255)
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created_at = fields.DatetimeField(auto_now_add=True)
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updated_at = fields.DatetimeField(auto_now=True)
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user: fields.ForeignKeyRelation = fields.ForeignKeyField(
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"models.User", related_name="conversations", null=True
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)
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class Meta:
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table = "conversations"
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class ConversationMessage(Model):
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id = fields.UUIDField(primary_key=True)
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text = fields.TextField()
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conversation = fields.ForeignKeyField(
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"models.Conversation", related_name="messages"
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)
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created_at = fields.DatetimeField(auto_now_add=True)
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speaker = fields.CharEnumField(enum_type=Speaker, max_length=10)
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image_key = fields.CharField(max_length=512, null=True, default=None)
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class Meta:
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table = "conversation_messages"
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class UserMemory(Model):
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id = fields.UUIDField(primary_key=True)
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user = fields.ForeignKeyField("models.User", related_name="memories")
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content = fields.TextField()
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created_at = fields.DatetimeField(auto_now_add=True)
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updated_at = fields.DatetimeField(auto_now=True)
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class Meta:
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table = "user_memories"
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PydConversationMessage = pydantic_model_creator(ConversationMessage)
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PydConversation = pydantic_model_creator(
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Conversation, name="Conversation", allow_cycles=True, exclude=("user",)
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)
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PydConversationWithMessages = pydantic_model_creator(
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Conversation,
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name="ConversationWithMessages",
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allow_cycles=True,
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exclude=("user",),
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include=("messages",),
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)
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PydListConversation = pydantic_queryset_creator(Conversation)
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PydListConversationMessage = pydantic_queryset_creator(ConversationMessage)
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