Filter on jobs in time reports

Completes #2107

config/locales/en.yml

@@ -1,2 +1,3 @@
 en:
+  field_jobs: Jobs
   field_job: Job

init.rb

@@ -15,5 +15,6 @@ Redmine::Plugin.register :jobs do
     Rails.logger.info "Patch Jobs"
     TimeEntryQuery.send(:include, TimeEntryQueryPatch)
     TimeEntry.send(:include, TimeEntryPatch)
+    Project.send(:include, ProjectPatch)
   end
 end

lib/project_patch.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require_dependency 'project'
+
+module ProjectPatch
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :jobs
+  end
+end

lib/time_entry_query_patch.rb

@@ -9,18 +9,18 @@ module TimeEntryQueryPatch
   included do
     include InstanceMethods
 
-#    alias_method :initialize_available_filters_without_jobs, :initialize_available_filters
+    alias_method :initialize_available_filters_without_jobs, :initialize_available_filters
-#    alias_method :initialize_available_filters, :initialize_available_filters_with_jobs
+    alias_method :initialize_available_filters, :initialize_available_filters_with_jobs
 
     alias_method :available_columns_without_jobs, :available_columns
     alias_method :available_columns, :available_columns_with_jobs
   end
 
   module InstanceMethods
-#    def initialize_available_filters_with_jobs
+    def initialize_available_filters_with_jobs
-#      initialize_available_filters_without_jobs
+      initialize_available_filters_without_jobs
-#      initialize_issue_jobs_filter
+      initialize_issue_jobs_filter
-#    end
+    end
 
     def available_columns_with_jobs
       if @available_columns.nil?
@@ -32,8 +32,21 @@ module TimeEntryQueryPatch
       @available_columns
     end
 
+    def initialize_issue_jobs_filter(position: nil)
+      add_available_filter("job_id", order: position,
+                                   type: :list_optional,
+                                   values: jobs_list
+                          )
+    end
+
     def sql_for_issue_jobs_field(_field, operator, values)
       build_sql_for_jobs_field klass: Issue, operator: operator, values: values
     end
+
+    def jobs_list
+      Job.where(project: [project, project&.parent]).map do |job|
+        [job.name, job.id.to_s]
+      end
+    end
   end
 end