Merge branch '32447-remove-source-branch-is-displayed-to-mergers-who-cannot-actually-delete-the-source-branch-from-a-forked-project' into 'master'

Disable "Remove source branch" in MR Widget for users who can't remove, and re-add checkbox to MR form

Closes #32447 and #32907

See merge request !11558

2 files changed, 7 insertions, 3 deletions

diff --git a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js b/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js
index d866d4e94b0..fcd4fdaf09f 100644
--- a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js
+++ b/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js
@@ -13,7 +13,7 @@ export default {
   },
   data() {
     return {
-      removeSourceBranch: true,
+      removeSourceBranch: this.mr.shouldRemoveSourceBranch,
       mergeWhenBuildSucceeds: false,
       useCommitMessageWithDescription: false,
       setToMergeWhenPipelineSucceeds: false,
@@ -69,6 +69,9 @@ export default {
         || this.isMakingRequest
         || this.mr.preventMerge);
     },
+    isRemoveSourceBranchButtonDisabled() {
+      return this.isMergeButtonDisabled || !this.mr.canRemoveSourceBranch;
+    },
     shouldShowSquashBeforeMerge() {
       const { commitsCount, enableSquashBeforeMerge } = this.mr;
       return enableSquashBeforeMerge && commitsCount > 1;
@@ -252,8 +255,9 @@ export default {
       <template v-if="isMergeAllowed()">
         <label class="spacing">
           <input
+            id="remove-source-branch-input"
             v-model="removeSourceBranch"
-            :disabled="isMergeButtonDisabled"
+            :disabled="isRemoveSourceBranchButtonDisabled"
             type="checkbox"/> Remove source branch
         </label>
 
diff --git a/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js b/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js
index c07bd25e6fd..dc4b2195050 100644
--- a/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js
+++ b/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js
@@ -50,7 +50,7 @@ export default class MergeRequestStore {
     this.cancelAutoMergePath = data.cancel_merge_when_pipeline_succeeds_path;
     this.removeWIPPath = data.remove_wip_path;
     this.sourceBranchRemoved = !data.source_branch_exists;
-    this.shouldRemoveSourceBranch = (data.merge_params || {}).should_remove_source_branch || false;
+    this.shouldRemoveSourceBranch = data.remove_source_branch || false;
     this.onlyAllowMergeIfPipelineSucceeds = data.only_allow_merge_if_pipeline_succeeds || false;
     this.mergeWhenPipelineSucceeds = data.merge_when_pipeline_succeeds || false;
     this.mergePath = data.merge_path;