Don't convert data which already is the target type

lib/api/commit_statuses.rb

@@ -77,7 +77,7 @@ module API
         )
 
         begin
-          case params[:state].to_s
+          case params[:state]
           when 'pending'
             status.enqueue!
           when 'running'

lib/api/commits.rb

@@ -48,7 +48,7 @@ module API
         requires :id, type: Integer, desc: 'The project ID'
         requires :branch_name, type: String, desc: 'The name of branch'
         requires :commit_message, type: String, desc: 'Commit message'
-        requires :actions, type: Array, desc: 'Actions to perform in commit'
+        requires :actions, type: Array[Hash], desc: 'Actions to perform in commit'
         optional :author_email, type: String, desc: 'Author email for commit'
         optional :author_name, type: String, desc: 'Author name for commit'
       end

lib/api/groups.rb

@@ -33,7 +33,7 @@ module API
 
         groups = groups.search(params[:search]) if params[:search].present?
         groups = groups.where.not(id: params[:skip_groups]) if params[:skip_groups].present?
-        groups = groups.reorder(params[:order_by] => params[:sort].to_sym)
+        groups = groups.reorder(params[:order_by] => params[:sort])
 
         present paginate(groups), with: Entities::Group
       end

lib/api/variables.rb

@@ -30,7 +30,7 @@ module API
       end
       get ':id/variables/:key' do
         key = params[:key]
-        variable = user_project.variables.find_by(key: key.to_s)
+        variable = user_project.variables.find_by(key: key)
 
         return not_found!('Variable') unless variable