我的模型中有以下方法:
def self.set_bad_recommedation_size(rating_set)
bad = Rating.where(rating_set: rating_set).where(label: 'Bad').count
total = Rating.where(rating_set: rating_set).count
percentage_bad = (bad.to_f/total.to_f * 100)
return bad, total, percentage_bad
end
如何在视图中调用变量bad,total,percentage_bad。 我想要的是什么:
<%= "#{Model.set_bad_recommedation_size(rating_set).bad}/#{Model.set_bad_recommedation_size(rating_set).total"%>
答案 0 :(得分:1)
你最好这样做:
<% bad, total, percentage_bad = Model.set_bad_recommedation_size(rating_set) %>
<%= "#{bad}/#{total}" %>
这样你就不会多次调用这个方法了。
答案 1 :(得分:1)
我会添加一个中间帮助器,以便您的视图更好地显示
<%= bad_recommendation_ratio(result_set) %>
Application.helper
def bad_recommendation_ratio(result_set)
bad, total = Model.set_bad_recommedation_size(rating_set)
"#{bad}/#{total}"
end