To remove created associations you can just call the set method without a specific id:

    1. // remove the association with task1
    2. project.setTasks([task2]).then(associatedTasks => {
    3.   // you will get task2 only
    4. })
    6. // remove 'em all
    7. project.setTasks([]).then(associatedTasks => {
    8.   // you will get an empty array
    9. })
    11. project.removeTask(task1).then(() => {
    12.   // it's gone
    13. })
    15. // and add 'em again
    16. project.addTask(task1).then(() => {
    17.   // it's back again
    18. })

    For hasOne/belongsTo it's basically the same:

    When getting data on an association that has a custom join table, the data from the join table will be returned as a DAO instance:

    1. u.getProjects().then(projects => {
    2.   const project = projects[0]
    4.   if (project.UserProjects.status === 'active') {
    5.     // .. do magic
    7.     // since this is a real DAO instance, you can save it directly after you are done doing magic
    8.     return project.UserProjects.save()
    9. })