Grails novice here. I would like to override the get() and list() methods of the generated service shown here.
@Service(PlayerFile)
interface PlayerFileService {
PlayerFile get(Serializable id)
List<PlayerFile> list(Map args)
Long count()
void delete(Serializable id)
PlayerFile save(PlayerFile playerFile)
}
Why? The default service/scaffolding model shows all domain objects for the PlayerFile class. I want to filter this so that only the objects belonging to the logged in user (i.e. the owner) are displayed.
I appreciate your recommendations on how to do this.
Here is the PlayerFile domain class
class PlayerFile {
String playersJson
Date dateCreated
Date lastUpdated
static belongsTo = [owner: User]
static constraints = {
playersJson sqlType: 'text', nullable: false, widget: 'textarea'
owner nullable: false, editable: false
}
}
You probably don't want to override the get method. You probably want a new query method...
@Service(PlayerFile)
interface PlayerFileService {
PlayerFile get(Serializable id)
List<PlayerFile> list(Map args)
Long count()
void delete(Serializable id)
PlayerFile save(PlayerFile playerFile)
List<PlayerFile> findByOwner(User owner)
}
If you don't need the get method for other purposes, delete it.
EDIT
Addressing the comment below:
Where do I put the code for findByOwner() shown above? It can't be added to an abstract interface.
I don't agree with that. It can definitely be in an abstract interface. You could turn PlayerFileService into an abstract class and make findByOwner a concrete method, but you do not have to. It can be an abstract method in an interface, which is the common thing in a GORM Data Service like this.
See the project at https://github.com/jeffbrown/rock298query.
package rock298query
import grails.gorm.services.Service
@Service(PlayerFile)
interface PlayerFileService {
PlayerFile get(Serializable id)
List<PlayerFile> list(Map args)
Long count()
void delete(Serializable id)
PlayerFile save(PlayerFile playerFile)
List<PlayerFile> findByOwner(User owner)
}
package rock298query
class BootStrap {
UserService userService
PlayerFileService playerFileService
def init = { servletContext ->
def jeff = userService.save('Jeff')
def jake = userService.save('Jake')
jeff.addToFiles(new PlayerFile(playersJson: '{"title":"Jeff File 1"'))
jeff.addToFiles(new PlayerFile(playersJson: '{"title":"Jeff File 2"'))
jeff.addToFiles(new PlayerFile(playersJson: '{"title":"Jeff File 3"'))
userService.save jeff
jake.addToFiles(new PlayerFile(playersJson: '{"title":"Jake File 1"'))
jake.addToFiles(new PlayerFile(playersJson: '{"title":"Jake File 2"'))
jake.addToFiles(new PlayerFile(playersJson: '{"title":"Jake File 3"'))
userService.save jake
}
def destroy = {
}
}
package rock298query
class DemoController {
PlayerFileService playerFileService
UserService userService
def jakeFiles() {
def jake = userService.find('Jake')
def files = playerFileService.findByOwner(jake)
render files*.playersJson
}
def jeffFiles() {
def jeff = userService.find('Jeff')
def files = playerFileService.findByOwner(jeff)
render files*.playersJson
}
}
That all appears to work.
~ $ curl http://localhost:8080/demo/jakeFiles
['{"title":"Jake File 1"', '{"title":"Jake File 2"', '{"title":"Jake File 3"']
~ $
~ $ curl http://localhost:8080/demo/jeffFiles
['{"title":"Jeff File 1"', '{"title":"Jeff File 2"', '{"title":"Jeff File 3"']
I hope that helps.