Ruby on rails check_box始终呈现已检查

Question

总是在dom中检查我的rails复选框。如何在页面加载时检查对象是否为真？

= f.check_box :split_funding, {class: "split_funding", :disabled => @survey.completed?, id: "split_funding_#{school.id}", "data-attribute" => "split_funding", "data-id" => school.id}

Answer 1

将checked属性传递给它：

= f.check_box :split_funding, {checked: @survey.split_funding, class: "split_funding", :disabled => @survey.completed?, id: "split_funding_#{school.id}", "data-attribute" => "split_funding", "data-id" => school.id}

我不确定你的意思是'如果对象是真的'，所以我假设:split_funding将返回true / false。如果它是关系，您可以在末尾链接:present?以检查关系是否存在。