播放框架2.4.3演变未触发

Question

我正在做Play 的todo教程.当我创造进化时conf/evolutions/default/1.sql没有任何反应.我只是得到了JdbcSQLException: Table "TASK" not found有意义的例外.

我使用h2-browser激活器控制台手动将演变应用到DB,之后它可以工作.但是演变不会自动显现.

application.conf

# Database configuration
# ~~~~~
# You can declare as many datasources as you want.
# By convention, the default datasource is named `default`
#
db.default.driver=org.h2.Driver
db.default.url="jdbc:h2:mem:play"
db.default.username=sa
db.default.password=""

# New
evolutionplugin=enabled
applyEvolutions.db=true
applyEvolutions.default=true
applyDownEvolutions.default=true

# Evolutions
# ~~~~~
# You can disable evolutions if needed
# play.evolutions.enabled=false

# You can disable evolutions for a specific datasource if necessary
# play.evolutions.db.default.enabled=false

1.SQL

# Tasks schema

# --- !Ups

CREATE SEQUENCE task_id_seq;
CREATE TABLE task (
    id integer NOT NULL DEFAULT nextval('task_id_seq'),
    label varchar(255)
);

# --- !Downs

DROP TABLE task;
DROP SEQUENCE task_id_seq;

Answer 1

好.我阅读了迁移文档,其中一个必须应用于libraryDependencies += evolutionsbuild.sbt.

然后它像预期的那样工作.

这些都不是必需的,它们会自动应用演化(不显示Database 'default' needs evolution!):

applyEvolutions.db=true
applyEvolutions.default=true
applyDownEvolutions.default=true