Many to many in Ember

How to write model in ember with many to many relation like this?

Patron

• hasMany Events (as Events patron go)
• belongTo Event (as who attend the Event)

Event

• belongTo Patron (as what event patron go)
• hasMany Patron (as Event attendees)

currently i write it like this, is this correct?

Event

export default DS.Model.extend({      
  attendees: DS.belongsTo('patron', {    
    async:true,
    inverse: 'events'
  }),
  attendees: DS.hasMany('patron', {    
    async:true,
    inverse: 'attending'
  }),
})

Patron

export default DS.Model.extend({      
  events: DS.hasMany('event', {
    inverse: null
    async: true
  }),
  attending: belongsTo('event', {
    async: true,
    inverse: 'attendees'
  })
})