Add form semantic_errors usage to documentation

Document the semantic_errors ability added in Pull request activeadmin#905 activeadmin#905
bazlo · Sep 10, 2013 · fecdf57 · fecdf57
1 parent e80686f
commit fecdf57
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diff --git a/docs/5-forms.md b/docs/5-forms.md
@@ -70,3 +70,13 @@ The `:heading` option will add a custom heading to has_many form. You can hide a
 
 The `:new_record` option will show or hide new record link at the bottom of has_many form. It is set as true by default.
 
+## Displaying Errors
+
+To display a list of all errors, include `semantic_errors` at top of form. Particularly useful to display errors on the base or virtual attributes.
+
+    form do |f|
+      f.semantic_errors *f.object.errors.keys
+      f.inputs
+      f.buttons
+    end
+