Refactor

src/components/Dialogs/SelectAddStudentsToCourseDialog.vue

@@ -58,6 +58,7 @@ import { setInputElementFocus } from "@/utils/events";
 import { SET_ERROR_MESSAGE, SET_ERROR_DIALOG } from "@/store/mutation-types";
 import CourseService from "@/api/services/training";
 import UserSelectForCourse from "@/components/Dialogs/DialogComponents/UserSelectForCourse";
+import { availableSeatsInCourse } from "@/utils/course";
 
 export default {
   name: "SelectAddStudentsToCourseDialog",
@@ -139,17 +140,7 @@ export default {
     areNoAvailableSeats() {
       return this.availableSeatsInCourse < 0;
     },
-    availableSeatsInCourse() {
-      let seats = this.course.capacity;
-      if (isNaN(seats)) {
-        seats = 10;
-      }
-      if (!isNaN(this.courseMembers.length)) {
-        seats -= this.courseMembers.length;
-      }
-      seats -= this.courseRegistrations.length;
-      return seats;
-    },
+    availableSeatsInCourse,
     canSubmit() {
       return (
         this.isCourseSelected &&