Fix #items_in_collection? for SELECT with DISTINCT.

pcreux · pcreux · commit 6d7baa5e7242 · 2012-07-02T11:04:12.000+02:00
Calling .exists? would do "select distinct (1)" preventing
page 2 from being displayed.
diff --git a/lib/active_admin/views/pages/index.rb b/lib/active_admin/views/pages/index.rb
@@ -43,7 +43,8 @@ def items_in_collection?
           #
           # If we don't reorder, there may be some columns referenced in the order
           # clause that requires the original select.
-          collection.reorder("").limit(1).exists?
+
+          !!collection.reorder("").first
         end
 
         def build_collection

Original file line number	Diff line number	Diff line change
`@@ -43,7 +43,8 @@ def items_in_collection?`
`43`	`43`	`#`
`44`	`44`	`# If we don't reorder, there may be some columns referenced in the order`
`45`	`45`	`# clause that requires the original select.`
`46`		`- collection.reorder("").limit(1).exists?`
	`46`	`+`
	`47`	`+ !!collection.reorder("").first`
`47`	`48`	`end`
`48`	`49`
`49`	`50`	`def build_collection`