Question

In my project certain users have dual roles, so if any such user logs in how can I make him switch between those 2 ROLES he has so that he can perform certain operations which that particular ROLE provides.

Appreciate step by step process as I am really new to Grails. Any such literature online with example is highly appreciated.

UPDATE:-
WorkridersUser loadUserByUsername(String username, String roleName) throws UsernameNotFoundException {
// def conf = SpringSecurityUtils.securityConfig
//Class User = grailsApplication.getDomainClass(“Person”).clazz

    SchemeUser.withTransaction { status ->

        SchemeUser user = SchemeUser.findByUsername(username) 
        if (!user){ throw new UsernameNotFoundException('User not found', username)}

        UserProfile userProfile = UserProfile.findByEmail(user.username)
        Representative representative = Representative.findByUser(user)
        Organization organization = Organization.get(representative.organization.id)


        def authorities = user.authorities.collect {new GrantedAuthorityImpl(it.authority)}

        return new WorkridersUser(user.username, user.password, user.enabled, 
            !user.accountExpired, !user.passwordExpired, !user.accountLocked, 
            authorities ?: roleName, user.id, organization.companyName,userProfile) 
    } 
}

Thanks

Sri

Answer 1

you need to override the loadUserByUsername method as follows:

UserDetails loadUserByUsername(String username, String selectedRole) {
  // current selected role is stored in the member variable of the UserDetail class         
  this.selectedRole = selectedRole
  return loadUserByUsername(username)
}

to show all roles of current user within a select box write your own tag lib which should look like:

def authorities = springSecurityService.principal.originalAuthorities
if (authorities.size() > 1) {
    out << "<form name='switchRoleForm' action='switchRole' method='post'>"
    out << "<select name='roles'>"
    Role tmpRole
    authorities.each {
        tmpRole = Role.findByAuthority(it.authority)
        // access your current select role
            if (springSecurityService.principal.selectedRole== it.authority)
            out << "<option selected value='${it.authority}'>${tmpRole.name}</option>"
        else
            out << "<option value='${it.authority}'>${tmpRole.name}</option>"
    }
    out << "</select>"
    out << '<input class="switch" type="submit" value="switch"/></span>'
    out << "</form>"        
}

i described the switch logic in previous post.