Update request to save reorder

app/assets/javascripts/issuable/related_issues/components/related_issues_block.vue

@@ -95,9 +95,11 @@ export default {
     },
     reordered(event) {
       this.removeDraggingCursor();
-      console.log(event);
 
-      this.$emit('saveReorder', event);
+      this.$emit('saveReorder', {
+        issueId: parseInt(event.item.dataset.key, 10),
+        newOrder: event.newIndex + 1,
+      });
     },
     addDraggingCursor() {
       document.body.classList.add('is-dragging');
@@ -200,6 +202,7 @@ export default {
               'sortable-row': canReorder,
               card: canReorder
             }"
+            :data-key="issue.id"
           >
             <issue-item
               event-namespace="relatedIssue"

app/assets/javascripts/issuable/related_issues/components/related_issues_root.vue

@@ -160,8 +160,12 @@ export default {
           Flash('An error occurred while fetching issues.');
         });
     },
-    saveIssueOrder() {
-      this.service.saveIssueOrder(1, 1);
+    saveIssueOrder({ issueId, newOrder = 1 }) {
+      const issue = _.find(this.state.relatedIssues, issue => issue.id === issueId);
+
+      if (issue) {
+        this.service.saveIssueOrder(issue.epic_issue_id, newOrder);
+      }
     },
 
     onInput(newValue, caretPos) {

app/assets/javascripts/issuable/related_issues/mixins/related_issues_mixin.js

 import tooltip from '../../../vue_shared/directives/tooltip';
+import eventHub from '../event_hub';
 
 const mixins = {
   data() {

app/assets/javascripts/issuable/related_issues/services/related_issues_service.js

@@ -20,7 +20,7 @@ class RelatedIssuesService {
   }
 
   saveIssueOrder(issueId, position) {
-    return this.reorderIssuesResource.save({
+    return this.reorderIssuesResource.update({
       id: issueId,
     }, {
       position,

ee/app/services/issuable_links/list_service.rb

@@ -16,7 +16,8 @@ module IssuableLinks
           state: referenced_issue.state,
           reference: reference(referenced_issue),
           path: project_issue_path(referenced_issue.project, referenced_issue.iid),
-          destroy_relation_path: destroy_relation_path(referenced_issue)
+          destroy_relation_path: destroy_relation_path(referenced_issue),
+          epic_issue_id: referenced_issue.epic_issue_id
         }
       end
     end