1 files changed, 9 insertions, 0 deletions
diff --git a/app/models/member.rb b/app/models/member.rb
index f2926d32d47..36f9741ce01 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -38,6 +38,11 @@ class Member < ApplicationRecord
       scope: [:source_type, :source_id],
       allow_nil: true
     }
+  validates :user_id,
+    uniqueness: {
+      message: _('project bots cannot be added to other groups / projects')
+    },
+    if: :project_bot?
 
   # This scope encapsulates (most of) the conditions a row in the member table
   # must satisfy if it is a valid permission. Of particular note:
@@ -473,6 +478,10 @@ class Member < ApplicationRecord
   def update_highest_role_attribute
     user_id
   end
+
+  def project_bot?
+    user&.project_bot?
+  end
 end
 
 Member.prepend_if_ee('EE::Member')