1 files changed, 12 insertions, 0 deletions
diff --git a/app/graphql/types/projects/branch_rule_type.rb b/app/graphql/types/projects/branch_rule_type.rb
index e7632c17cca..1afd2cc3fef 100644
--- a/app/graphql/types/projects/branch_rule_type.rb
+++ b/app/graphql/types/projects/branch_rule_type.rb
@@ -8,6 +8,8 @@ module Types
       accepts ::ProtectedBranch
       authorize :read_protected_branch
 
+      alias_method :branch_rule, :object
+
       field :name,
             type: GraphQL::Types::String,
             null: false,
@@ -20,6 +22,12 @@ module Types
             calls_gitaly: true,
             description: "Check if this branch rule protects the project's default branch."
 
+      field :matching_branches_count,
+            type: GraphQL::Types::Int,
+            null: false,
+            calls_gitaly: true,
+            description: 'Number of existing branches that match this branch rule.'
+
       field :branch_protection,
             type: Types::BranchRules::BranchProtectionType,
             null: false,
@@ -35,6 +43,10 @@ module Types
             Types::TimeType,
             null: false,
             description: 'Timestamp of when the branch rule was last updated.'
+
+      def matching_branches_count
+        branch_rule.matching(branch_rule.project.repository.branch_names).count
+      end
     end
   end
 end