mirror of
https://github.com/open-webui/open-webui
synced 2024-11-18 06:22:56 +00:00
83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
|
"""Update chat table
|
||
|
|
|
||
|
|
Revision ID: 242a2047eae0
|
||
|
|
Revises: 6a39f3d8e55c
|
||
|
|
Create Date: 2024-10-09 21:02:35.241684
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
from alembic import op
|
||
|
|
import sqlalchemy as sa
|
||
|
|
from sqlalchemy.sql import table, select, update
|
||
|
|
|
||
|
|
import json
|
||
|
|
|
||
|
|
revision = "242a2047eae0"
|
||
|
|
down_revision = "6a39f3d8e55c"
|
||
|
|
branch_labels = None
|
||
|
|
depends_on = None
|
||
|
|
|
||
|
|
|
||
|
|
def upgrade():
|
||
|
|
# Step 1: Rename current 'chat' column to 'old_chat'
|
||
|
|
op.alter_column("chat", "chat", new_column_name="old_chat", existing_type=sa.Text)
|
||
|
|
|
||
|
|
# Step 2: Add new 'chat' column of type JSON
|
||
|
|
op.add_column("chat", sa.Column("chat", sa.JSON(), nullable=True))
|
||
|
|
|
||
|
|
# Step 3: Migrate data from 'old_chat' to 'chat'
|
||
|
|
chat_table = table(
|
||
|
|
"chat",
|
||
|
|
sa.Column("id", sa.String, primary_key=True),
|
||
|
|
sa.Column("old_chat", sa.Text),
|
||
|
|
sa.Column("chat", sa.JSON()),
|
||
|
|
)
|
||
|
|
|
||
|
|
# - Selecting all data from the table
|
||
|
|
connection = op.get_bind()
|
||
|
|
results = connection.execute(select(chat_table.c.id, chat_table.c.old_chat))
|
||
|
|
for row in results:
|
||
|
|
try:
|
||
|
|
# Convert text JSON to actual JSON object, assuming the text is in JSON format
|
||
|
|
json_data = json.loads(row.old_chat)
|
||
|
|
except json.JSONDecodeError:
|
||
|
|
json_data = None # Handle cases where the text cannot be converted to JSON
|
||
|
|
|
||
|
|
connection.execute(
|
||
|
|
sa.update(chat_table)
|
||
|
|
.where(chat_table.c.id == row.id)
|
||
|
|
.values(chat=json_data)
|
||
|
|
)
|
||
|
|
|
||
|
|
# Step 4: Drop 'old_chat' column
|
||
|
|
op.drop_column("chat", "old_chat")
|
||
|
|
|
||
|
|
|
||
|
|
def downgrade():
|
||
|
|
# Step 1: Add 'old_chat' column back as Text
|
||
|
|
op.add_column("chat", sa.Column("old_chat", sa.Text(), nullable=True))
|
||
|
|
|
||
|
|
# Step 2: Convert 'chat' JSON data back to text and store in 'old_chat'
|
||
|
|
chat_table = table(
|
||
|
|
"chat",
|
||
|
|
sa.Column("id", sa.String, primary_key=True),
|
||
|
|
sa.Column("chat", sa.JSON()),
|
||
|
|
sa.Column("old_chat", sa.Text()),
|
||
|
|
)
|
||
|
|
|
||
|
|
connection = op.get_bind()
|
||
|
|
results = connection.execute(select(chat_table.c.id, chat_table.c.chat))
|
||
|
|
for row in results:
|
||
|
|
text_data = json.dumps(row.chat) if row.chat is not None else None
|
||
|
|
connection.execute(
|
||
|
|
sa.update(chat_table)
|
||
|
|
.where(chat_table.c.id == row.id)
|
||
|
|
.values(old_chat=text_data)
|
||
|
|
)
|
||
|
|
|
||
|
|
# Step 3: Remove the new 'chat' JSON column
|
||
|
|
op.drop_column("chat", "chat")
|
||
|
|
|
||
|
|
# Step 4: Rename 'old_chat' back to 'chat'
|
||
|
|
op.alter_column("chat", "old_chat", new_column_name="chat", existing_type=sa.Text)
|