帮助条件

Question

我在这里做错了什么？

  features = WidgetFeature.all(:conditions => {:widget_id=>params[:id], :children_features=>nil, :filterable => true" })

我想找到所有这些功能，其中widget_id = params [：id] AND children_features IS NIL AND filterable IS TRUE

Answer 1

features = WidgetFeature.all(:conditions => {:widget_id=>params[:id], :children_features=>nil, :filterable => true })

这很有效。我解决了。

Answer 2

试试这个：

features = WidgetFeature.find(:all, :conditions => "[widget_id=? and children_features is NULL and filterable = true", params[:id] ]")

这会对你有帮助..

Answer 3

在我看来，最好的方法是

WidgetFeature.some_name_for_named_scope（PARAMS [：ID]）

IN WidgetFeature Model

named_scope：some_name_for_named_scope，lambda {| widget_id |     {：conditions =＆gt; [“widget_id =？AND children_features =？AND filterable =？”，widget_id，nil，true]}   }

请让我知道你或任何人的想法？