我想用我的alembic迁移文件创建一个新表，并在表上添加2条记录。我的<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listItem"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/imageView1"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginEnd="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:padding="2dp"
android:src="@drawable/saffron_flag" />
<Button
android:id="@+id/View_btn"
android:layout_width="60dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginRight="5dp"
android:background="@drawable/saffron_flag"
android:paddingLeft="5dp"
android:textColor="@android:color/white"
android:textSize="7sp" />
<TextView
android:id="@+id/Name_txt"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_toLeftOf="@+id/View_btn"
android:layout_toRightOf="@+id/imageView1"
android:text="@string/arabella"
android:textColor="@color/colorPrimaryDark"
android:textSize="15sp"
android:textStyle="bold" />
<TextView
android:id="@+id/Brandname_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/Name_txt"
android:layout_marginLeft="5dp"
android:layout_toLeftOf="@+id/View_btn"
android:layout_toRightOf="@+id/imageView1"
android:text="@string/arabella"
android:textColor="@color/black_overlay"
android:textSize="11sp" />
<TextView
android:id="@+id/Description_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/Brandname_txt"
android:layout_marginLeft="5dp"
android:layout_toLeftOf="@+id/View_btn"
android:layout_toRightOf="@+id/imageView1"
android:text="@string/arabella"
android:textColor="@color/black_overlay"
android:textSize="11sp" />
<TextView
android:id="@+id/Phone_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_marginLeft="5dp"
android:layout_below="@+id/Description_txt"
android:layout_toRightOf="@+id/imageView1"
android:text="@string/arabella"
android:textColor="@color/black_overlay"
android:textSize="11sp" />
<TextView
android:id="@+id/Viewed_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/View_btn"
android:layout_alignBottom="@+id/View_btn"
android:layout_marginEnd="25dp"
android:layout_marginRight="25dp"
android:layout_toLeftOf="@+id/View_btn"
android:layout_toStartOf="@+id/View_btn"
android:text="@string/viewed"
android:textColor="@color/colorPrimaryDark"
android:textSize="11sp"
android:textStyle="bold"
android:visibility="gone" />
<ImageView
android:id="@+id/imgView"
android:layout_width="30dp"
android:layout_height="20dp"
android:layout_alignBottom="@+id/Name_txt"
android:layout_toLeftOf="@+id/Viewed_txt"
android:layout_toStartOf="@+id/Viewed_txt"
android:src="@drawable/ic_small_view"
android:visibility="gone" />
</RelativeLayout>
功能
upgrade()通过alembic运行升级时出现以下错误
def upgrade():
op.create_table(
'new_table',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('text', sa.String(length=180), nullable=False),
sa.PrimaryKeyConstraint('id', name='pk_new_table'),
sa.UniqueConstraint('text', name='uq_new_table__text'),
)
# Create ad-hoc table as a helper
new_table = sa.table(
'new_table',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('text', sa.String(length=180), nullable=False),
sa.PrimaryKeyConstraint('id', name='pk_new_table'),
sa.UniqueConstraint('text', name='uq_new_table__text'),
)
op.bulk_insert(new_table, [
{'text': 'First'},
{'text': 'Second'}
])
此错误从包含SqlAlchemy表上的AttributeError: 'PrimaryKeyConstraint' object has no attribute 'key'
的行开始。可能有什么不对？
应用迁移的数据库后端是MySQL服务器。