Enable merge_request_reviwers feature flag

app/controllers/projects/merge_requests/creations_controller.rb

@@ -12,7 +12,7 @@ class Projects::MergeRequests::CreationsController < Projects::MergeRequests::Ap
   before_action :build_merge_request, except: [:create]
 
   before_action do
-    push_frontend_feature_flag(:merge_request_reviewers, @project)
+    push_frontend_feature_flag(:merge_request_reviewers, @project, default_enabled: true)
     push_frontend_feature_flag(:mr_collapsed_approval_rules, @project)
   end
 

app/controllers/projects/merge_requests_controller.rb

@@ -51,7 +51,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
 
   before_action do
     push_frontend_feature_flag(:vue_issuable_sidebar, @project.group)
-    push_frontend_feature_flag(:merge_request_reviewers, @project)
+    push_frontend_feature_flag(:merge_request_reviewers, @project, default_enabled: true)
     push_frontend_feature_flag(:mr_collapsed_approval_rules, @project)
   end
 

app/models/merge_request.rb

@@ -1755,7 +1755,7 @@ class MergeRequest < ApplicationRecord
   end
 
   def allows_reviewers?
-    Feature.enabled?(:merge_request_reviewers, project)
+    Feature.enabled?(:merge_request_reviewers, project, default_enabled: true)
   end
 
   def allows_multiple_reviewers?

app/views/projects/merge_requests/_merge_request.html.haml

@@ -55,7 +55,7 @@
         - if merge_request.assignees.any?
           %li.gl-display-flex.gl-align-items-center
             = render 'shared/issuable/assignees', project: merge_request.project, issuable: merge_request
-        - if Feature.enabled?(:merge_request_reviewers, @project) && merge_request.reviewers.any?
+        - if Feature.enabled?(:merge_request_reviewers, @project, default_enabled: true) && merge_request.reviewers.any?
           %li.gl-display-flex.issuable-reviewers
             = render 'shared/issuable/reviewers', project: merge_request.project, issuable: merge_request
         = render 'projects/merge_requests/approvals_count', merge_request: merge_request

app/views/shared/issuable/_sidebar.html.haml

@@ -25,7 +25,7 @@
       .block.assignee.qa-assignee-block
         = render "shared/issuable/sidebar_assignees", issuable_sidebar: issuable_sidebar, assignees: assignees, signed_in: signed_in
 
-      - if Feature.enabled?(:merge_request_reviewers, @project) && reviewers
+      - if Feature.enabled?(:merge_request_reviewers, @project, default_enabled: true) && reviewers
         .block.reviewer.qa-reviewer-block
           = render "shared/issuable/sidebar_reviewers", issuable_sidebar: issuable_sidebar, reviewers: reviewers, signed_in: signed_in
 

config/feature_flags/development/merge_request_reviewers.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/245190
 milestone: '13.4'
 type: development
 group: group::code review
-default_enabled: false
+default_enabled: true

doc/user/project/merge_requests/getting_started.md

@@ -115,9 +115,7 @@ It is also possible to manage multiple assignees:
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/216054) in GitLab 13.5.
 > - It's [deployed behind a feature flag](../../../user/feature_flags.md), enabled by default.
-> - It's disabled on GitLab.com.
-> - It's not recommended for production use.
-> - To use it in GitLab self-managed instances, ask a GitLab administrator to [enable it](#enable-or-disable-merge-request-reviewers). **(CORE ONLY)**
+> - To disable it in GitLab self-managed instances, ask a GitLab administrator to [disable it](#enable-or-disable-merge-request-reviewers). **(CORE ONLY)**
 
 WARNING:
 This feature might not be available to you. Check the **version history** note above for details.
@@ -136,10 +134,9 @@ To request it, open the **Reviewers** drop-down box to search for the user you w
 
 #### Enable or disable Merge Request Reviewers **(CORE ONLY)**
 
-Merge Request Reviewers is under development and not ready for production use. It is
-deployed behind a feature flag that is **disabled by default**.
+It is deployed behind a feature flag that is **enabled by default**.
 [GitLab administrators with access to the GitLab Rails console](../../../administration/feature_flags.md)
-can enable it.
+can enable/disable it.
 
 To enable it:
 

ee/app/views/shared/issuable/_approvals.html.haml

@@ -3,7 +3,7 @@
 - return unless issuable.is_a?(MergeRequest)
 - return unless issuable.approval_feature_available?
 
-- if !Feature.enabled?(:merge_request_reviewers, @project) || !Feature.enabled?(:mr_collapsed_approval_rules, @project)
+- if !Feature.enabled?(:merge_request_reviewers, @project, default_enabled: true) || !Feature.enabled?(:mr_collapsed_approval_rules, @project)
   .form-group.row
     .col-sm-2.col-form-label
       = form.label :approver_ids, "Approval rules"