Changing logback log level from browser.
Add a following line to build.sbt:
libraryDependencies += "com.github.tkawachi" %% "play-logback-ui" % "0.0.1"
Add a following line to conf/routes:
-> /logbackui logbackui.Routes
/logbackui is just an example. Change it as you like.
sbt run and access http://localhost:9000/logbackui