add common interests key for each recommendation for sorting later

Author: supalarry

frontend/src/components/app/recommendations/Recommendations.vue

@@ -54,7 +54,6 @@ export default {
     MultipleFiltersDropdown,
   },
   data: () => ({
-    loggedInUser: null,
   }),
   methods: {
     sort(...args) {
@@ -72,26 +71,14 @@ export default {
       } else if (by === 'Least popular') {
         this.recommendations.sort((a, b) => a.heat_score - b.heat_score);
       } else if (by === 'Most common interests') {
-        this.recommendations.sort((a, b) => this.count_similarities(a.tags, this.loggedInUser.tags) - this.count_similarities(b.tags, this.loggedInUser.tags));
+        this.recommendations.sort((a, b) => b.common_interests - a.common_interests);
       } else if (by === 'Least common interests') {
-        this.recommendations.sort((a, b) => this.count_similarities(b.tags, this.loggedInUser.tags) - this.count_similarities(a.tags, this.loggedInUser.tags));
+        this.recommendations.sort((a, b) => a.common_interests - b.common_interests);
       }
     },
-    count_similarities(arrayA, arrayB) {
-      let matches = 0;
-      for (let i = 0 ; i < arrayA.length; i++) {
-        if (arrayB.indexOf(arrayA[i].name) != -1) {
-          matches++;
-        }
-      }
-      return matches;
-    },
     filter() {
       console.log('filter');
     },
   },
-  mounted() {
-    this.loggedInUser = this.$store.getters.getLoggedInUser;
-  }
 };
 </script>

frontend/src/views/app/Browse.vue

@@ -42,6 +42,16 @@ export default {
     },
     recommendationsAnalysisDone: false,
   }),
+  methods: {
+    interestsIdsOfUser(user) {
+      const interestsIds = [];
+      const interestObjects = user.tags;
+      for (let i = 0; i < interestObjects.length; i += 1) {
+        interestsIds.push(interestObjects[i].id);
+      }
+      return interestsIds;
+    },
+  },
   async created() {
     if (this.recommendationsFromSettingUp) {
       this.recommendations = this.recommendationsFromSettingUp;
@@ -70,10 +80,15 @@ export default {
         this.recommendationsAnalysis.popularity.max = this.recommendations[i].heat_score;
       }
       const interests = this.recommendations[i].tags;
+      const interestsIdsOfLoggedInUser = this.interestsIdsOfUser(this.$store.getters.getLoggedInUser);
+      this.recommendations[i].common_interests = 0;
       for (let j = 0; j < interests.length; j += 1) {
         if (this.recommendationsAnalysis.uniqueInterests.indexOf(interests[j].name) === -1) {
           this.recommendationsAnalysis.uniqueInterests.push(interests[j].name);
         }
+        if (interestsIdsOfLoggedInUser.indexOf(interests[j].id) !== -1) {
+          this.recommendations[i].common_interests += 1;
+        }
       }
     }
     this.recommendationsAnalysisDone = true;