Support lowercase none / any

app/finders/issuable_finder.rb

@@ -35,8 +35,8 @@ class IssuableFinder
   requires_cross_project_access unless: -> { project? }
 
   # This is used as a common filter for None / Any
-  FILTER_NONE = 'None'.freeze
-  FILTER_ANY = 'Any'.freeze
+  FILTER_NONE = 'none'.freeze
+  FILTER_ANY = 'any'.freeze
 
   # This is accepted as a deprecated filter and is also used in unassigning users
   NONE = '0'.freeze
@@ -250,11 +250,11 @@ class IssuableFinder
 
   def filter_by_no_assignee?
     # Assignee_id takes precedence over assignee_username
-    [NONE, FILTER_NONE].include?(params[:assignee_id].to_s) || params[:assignee_username].to_s == NONE
+    [NONE, FILTER_NONE].include?(params[:assignee_id].to_s.downcase) || params[:assignee_username].to_s == NONE
   end
 
   def filter_by_any_assignee?
-    params[:assignee_id].to_s == FILTER_ANY
+    params[:assignee_id].to_s.downcase == FILTER_ANY
   end
 
   # rubocop: disable CodeReuse/ActiveRecord

lib/api/helpers/custom_validators.rb

@@ -16,7 +16,7 @@ module API
           value = params[attr_name]
 
           return if value.is_a?(Integer) ||
-              [IssuableFinder::FILTER_NONE, IssuableFinder::FILTER_ANY].include?(value)
+              [IssuableFinder::FILTER_NONE, IssuableFinder::FILTER_ANY].include?(value.to_s.downcase)
 
           raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)],
                                                message: "should be an integer, 'None' or 'Any'"

spec/finders/issues_finder_spec.rb

@@ -57,17 +57,21 @@ describe IssuesFinder do
       end
 
       context 'filtering by no assignee' do
-        let(:params) { { assignee_id: 0 } }
+        let(:params) { { assignee_id: 'None' } }
 
         it 'returns issues not assigned to any assignee' do
           expect(issues).to contain_exactly(issue4)
         end
-      end
 
-      context 'filtering by no assignee' do
-        let(:params) { { assignee_id: 'None' } }
+        it 'returns issues not assigned to any assignee' do
+          params[:assignee_id] = 0
+
+          expect(issues).to contain_exactly(issue4)
+        end
 
         it 'returns issues not assigned to any assignee' do
+          params[:assignee_id] = 'none'
+
           expect(issues).to contain_exactly(issue4)
         end
       end
@@ -78,6 +82,12 @@ describe IssuesFinder do
         it 'returns issues assigned to any assignee' do
           expect(issues).to contain_exactly(issue1, issue2, issue3)
         end
+
+        it 'returns issues assigned to any assignee' do
+          params[:assignee_id] = 'any'
+
+          expect(issues).to contain_exactly(issue1, issue2, issue3)
+        end
       end
 
       context 'filtering by group_id' do

spec/lib/api/helpers/custom_validators_spec.rb

@@ -38,6 +38,8 @@ describe API::Helpers::CustomValidators do
         expect_no_validation_error({ 'test' => 100 })
         expect_no_validation_error({ 'test' => 'None' })
         expect_no_validation_error({ 'test' => 'Any' })
+        expect_no_validation_error({ 'test' => 'none' })
+        expect_no_validation_error({ 'test' => 'any' })
       end
     end