dirty-check.js

/* app/mixins/dirty-check.js */
import Ember from ‘ember’;

var RelationshipDirtyCheck = Ember.Mixin.create({
 relationshipDirtyCheck: Ember.computed(‘location’, ‘locationId’, ‘interests.[]’, ‘interestsIds’, function() {
   const model = this;
   let _dirty = false;
   this.eachRelationship((name, meta) => {
     if (meta.kind === ‘belongsTo’){
       if (model.get(name) && model.get(name).get(‘id’) !== this.get(`${name}Id`)) {
         _dirty = true;
       }
     }
     else if (meta.kind === ‘hasMany’) {
       const m2m_ids = this.get(`${name}Ids`) || [];
       const current_m2m_ids = this.get(name).mapBy(‘id’);
       if(m2m_ids.length !== current_m2m_ids.length) { 
         _dirty = true; 
       }
       m2m_ids.forEach((id) => {
         if(!current_m2m_ids.includes(id)) {
           _dirty = true;
         }
       });
     }
   });
   return _dirty;
 }),
 relationshipsIsDirty: Ember.computed(‘relationshipDirtyCheck’, function(){
     return this.get(‘relationshipDirtyCheck’);
 }),
 relationshipsIsNotDirty: Ember.computed.not(‘relationshipsIsDirty’),
});
export default RelationshipDirtyCheck;