Question

I am using JDK 1.6.0_16, and Scala 2.7.7, compiling with maven.

I do mvn clean compile and I get four errors, but they are identical, in different models:

[ERROR]
C:\Users\owner\workspace\ResumeApp\src\main\scala\jblack\resumeapp\lift\
model\ContactInfoModel.scala:13:
error: illegal inheritance;

[INFO] self-type
jblack.resumeapp.lift.model.ContactInfoModel
does not conform to
net.liftweb.mapper.CRUDify[Long,jblack.resumeapp.lift.model.ContactInfoModel]
‘s selftype
net.liftweb.mapper.CRUDify[Long,jblack.resumeapp.lift.model.ContactI
nfoModel] with
jblack.resumeapp.lift.model.ContactInfoModel
with net.liftweb.map
per.KeyedMetaMapper[Long,jblack.resumeapp.lift.model.ContactInfoModel]

[INFO] with CRUDify[Long,
ContactInfoModel] {

And this is my code:

package jblack.resumeapp.lift.model

import net.liftweb.mapper._

object ContactInfoMetaData 
    extends ContactInfoModel 
        with KeyedMetaMapper[Long, ContactInfoModel] {
    override def dbTableName = "contactinfo"
    override def fieldOrder = List(key, data, display) 
}
class ContactInfoModel 
    extends KeyedMapper[Long, ContactInfoModel] 
        with CRUDify[Long, ContactInfoModel] {
    def getSingleton = ContactInfoMetaData
    def primaryKeyField = id

    object id extends MappedLongIndex(this)
    object key extends MappedString(this, 100)
    object data extends MappedString(this, 100)
    object display extends MappedBoolean(this)
}

I am not certain what I am doing wrong.

Unfortunately, because I installed the nightly plugin, into Eclipse, I can’t install IDE 2.7.7, so I can only compile this with maven.

Is there a problem with how I am using CRUDify?

Answer 1

CRUDify in lift-1.1 needs to be mixed into the MetaMapper object instead of the Mapper class. So it should work with this code instead:

package jblack.resumeapp.lift.model

import net.liftweb.mapper._

object ContactInfoMetaData 
    extends ContactInfoModel 
        with KeyedMetaMapper[Long, ContactInfoModel]
        with CRUDify[Long, ContactInfoModel] {
    override def dbTableName = "contactinfo"
    override def fieldOrder = List(key, data, display) 
}
class ContactInfoModel 
    extends KeyedMapper[Long, ContactInfoModel] {
    def getSingleton = ContactInfoMetaData
    def primaryKeyField = id

    object id extends MappedLongIndex(this)
    object key extends MappedString(this, 100)
    object data extends MappedString(this, 100)
    object display extends MappedBoolean(this)
}