update asyncpg example

examples/sanic_asyncpg_example.py

@@ -5,14 +5,14 @@ import os
 import asyncio
 
 import uvloop
-from asyncpg import create_pool
+from asyncpg import connect
 
 from sanic import Sanic
 from sanic.response import json
 
 DB_CONFIG = {
     'host': '<host>',
-    'user': '<username>',
+    'user': '<user>',
     'password': '<password>',
     'port': '<port>',
     'database': '<database>'
@@ -22,8 +22,7 @@ def jsonify(records):
     """
     Parse asyncpg record response into JSON format
     """
-    return [{key: value for key, value in
-             zip(r.keys(), r.values())} for r in records]
+    return [dict(r.items()) for r in records]
 
 app = Sanic(__name__)
 
@@ -32,26 +31,22 @@ async def create_db(app, loop):
     """
     Create some table and add some data
     """
-    async with create_pool(**DB_CONFIG) as pool:
-        async with pool.acquire() as connection:
-            async with connection.transaction():
-                await connection.execute('DROP TABLE IF EXISTS sanic_post')
-                await connection.execute("""CREATE TABLE sanic_post (
+    conn = await connect(**DB_CONFIG)
+    await conn.execute('DROP TABLE IF EXISTS sanic_post')
+    await conn.execute("""CREATE TABLE sanic_post (
         id serial primary key,
         content varchar(50),
-                                        post_date timestamp
-                                    );""")
+        post_date timestamp);"""
+                       )
     for i in range(0, 100):
-                    await connection.execute(f"""INSERT INTO sanic_post
+        await conn.execute(f"""INSERT INTO sanic_post
                            (id, content, post_date) VALUES ({i}, {i}, now())""")
 
 
 @app.route("/")
 async def handler(request):
-    async with create_pool(**DB_CONFIG) as pool:
-        async with pool.acquire() as connection:
-            async with connection.transaction():
-                results = await connection.fetch('SELECT * FROM sanic_post')
+    conn = await connect(**DB_CONFIG)
+    results = await conn.fetch('SELECT * FROM sanic_post')
     return json({'posts': jsonify(results)})