有條件幫助

Question

我在這裏做錯了什麼？

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

我想找到所有這些功能，其中WIDGET_ID =參數[：ID]和children_features爲零和過濾是真實

Answer 1

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

這工作。我解決了它。

Answer 2

試試這個：

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

這將幫助你..

Answer 3

在我的感覺這樣做的最好辦法是

WidgetFeature.some_name_for_named_scope（PARAMS [：編號]）

IN WidgetFeature Model

named_scope：some _name_for_named_scope，lambda {| widget_id | {：條件=> [ 「WIDGET_ID = AND children_features = AND過濾=？？？」，WIDGET_ID，零，真]}}

請讓我知道你或任何人想的？