Fix filter for chained User custom fields returns 500 internal server error when filtering after a float value (#37349).

git-svn-id: https://svn.redmine.org/redmine/trunk@21684 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/query.rb

@@ -1176,7 +1176,7 @@ class Query < ActiveRecord::Base
     end
 
     filter = available_filters[field]
-    target_class = filter[:through].format.target_class
+    target_class = filter[:through].format.target_class.base_class
 
     "#{queried_table_name}.id #{not_in} IN (" +
       "SELECT customized_id FROM #{CustomValue.table_name}" +
@@ -1184,7 +1184,7 @@ class Query < ActiveRecord::Base
       "  AND CAST(CASE value WHEN '' THEN '0' ELSE value END AS decimal(30,0)) IN (" +
       "  SELECT customized_id FROM #{CustomValue.table_name}" +
       "  WHERE customized_type='#{target_class}' AND custom_field_id=#{chained_custom_field_id}" +
-      "  AND #{sql_for_field(field, operator, value, CustomValue.table_name, 'value')}))"
+      "  AND #{sql_for_field(field, operator, value, CustomValue.table_name, 'value', true)}))"
 
   end
 

test/unit/query_test.rb

@@ -948,6 +948,18 @@ class QueryTest < ActiveSupport::TestCase
     assert_equal issue1, result.first
   end
 
+  def test_filter_on_chained_user_custom_field_of_type_float
+    user_cf = UserCustomField.find(5)
+    user_cf.update! is_filter: true
+
+    issue_cf = IssueCustomField.create!(:field_format => 'user', :is_for_all => true, :is_filter => true, :name => 'User custom field', :tracker_ids => [1])
+    issue1 = Issue.create!(:project_id => 1, :tracker_id => 1, :custom_field_values => {issue_cf.id.to_s => '2'}, :subject => 'Test', :author_id => 1)
+    query = IssueQuery.new(:name => '_', :project => Project.find(1))
+    query.filters = {"cf_#{issue_cf.id}.cf_#{user_cf.id}" => {:operator => '=', :values => ["30.1"]}}
+
+    assert query.issues
+  end
+
   def test_filter_on_me_by_anonymous_user
     User.current = nil
     query =