Fix problem with Groups API search argument

This change introduces a fix to Groups API search auery parameter that
was returning invalid results.

app/models/namespace.rb

@@ -119,7 +119,7 @@ class Namespace < ApplicationRecord
     # Returns an ActiveRecord::Relation.
     def search(query, include_parents: false)
       if include_parents
-        where(id: Route.fuzzy_search(query, [Route.arel_table[:path], Route.arel_table[:name]]).select(:source_id))
+        where(id: Route.for_routable_type(Namespace.name).fuzzy_search(query, [Route.arel_table[:path], Route.arel_table[:name]]).select(:source_id))
       else
         fuzzy_search(query, [:path, :name])
       end

app/models/route.rb

@@ -20,6 +20,7 @@ class Route < ApplicationRecord
 
   scope :inside_path, -> (path) { where('routes.path LIKE ?', "#{sanitize_sql_like(path)}/%") }
   scope :for_routable, -> (routable) { where(source: routable) }
+  scope :for_routable_type, -> (routable_type) { where(source_type: routable_type) }
   scope :sort_by_path_length, -> { order('LENGTH(routes.path)', :path) }
 
   def rename_descendants

changelogs/unreleased/258215-improve-fuzzy-search-on-full-path-in-groups.yml

+---
+title: Fix problems with Groups API search query parameter
+merge_request: 46394
+author:
+type: fixed

spec/models/namespace_spec.rb

@@ -147,42 +147,45 @@ RSpec.describe Namespace do
   end
 
   describe '.search' do
-    let_it_be(:namespace) { create(:namespace) }
+    let_it_be(:first_namespace) { build(:namespace, name: 'my first namespace', path: 'old-path').tap(&:save!) }
+    let_it_be(:parent_namespace) { build(:namespace, name: 'my parent namespace', path: 'parent-path').tap(&:save!) }
+    let_it_be(:second_namespace) { build(:namespace, name: 'my second namespace', path: 'new-path', parent: parent_namespace).tap(&:save!) }
+    let_it_be(:project_with_same_path) { create(:project, id: second_namespace.id, path: first_namespace.path) }
 
     it 'returns namespaces with a matching name' do
-      expect(described_class.search(namespace.name)).to eq([namespace])
+      expect(described_class.search('my first namespace')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a partially matching name' do
-      expect(described_class.search(namespace.name[0..2])).to eq([namespace])
+      expect(described_class.search('first')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a matching name regardless of the casing' do
-      expect(described_class.search(namespace.name.upcase)).to eq([namespace])
+      expect(described_class.search('MY FIRST NAMESPACE')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a matching path' do
-      expect(described_class.search(namespace.path)).to eq([namespace])
+      expect(described_class.search('old-path')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a partially matching path' do
-      expect(described_class.search(namespace.path[0..2])).to eq([namespace])
+      expect(described_class.search('old')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a matching path regardless of the casing' do
-      expect(described_class.search(namespace.path.upcase)).to eq([namespace])
+      expect(described_class.search('OLD-PATH')).to eq([first_namespace])
     end
 
     it 'returns namespaces with a matching route path' do
-      expect(described_class.search(namespace.route.path, include_parents: true)).to eq([namespace])
+      expect(described_class.search('parent-path/new-path', include_parents: true)).to eq([second_namespace])
     end
 
     it 'returns namespaces with a partially matching route path' do
-      expect(described_class.search(namespace.route.path[0..2], include_parents: true)).to eq([namespace])
+      expect(described_class.search('parent-path/new', include_parents: true)).to eq([second_namespace])
     end
 
     it 'returns namespaces with a matching route path regardless of the casing' do
-      expect(described_class.search(namespace.route.path.upcase, include_parents: true)).to eq([namespace])
+      expect(described_class.search('PARENT-PATH/NEW-PATH', include_parents: true)).to eq([second_namespace])
     end
   end
 

spec/models/route_spec.rb

@@ -62,6 +62,15 @@ RSpec.describe Route do
     end
   end
 
+  describe '.for_routable_type' do
+    let!(:nested_group) { create(:group, path: 'foo', name: 'foo', parent: group) }
+    let!(:project) { create(:project, path: 'other-project') }
+
+    it 'returns correct routes' do
+      expect(described_class.for_routable_type(Project.name)).to match_array([project.route])
+    end
+  end
+
   describe '#rename_descendants' do
     let!(:nested_group) { create(:group, path: 'test', name: 'test', parent: group) }
     let!(:deep_nested_group) { create(:group, path: 'foo', name: 'foo', parent: nested_group) }