如何为会话属性分配布尔值并从其他位置读取/检查?
这是正确的方法??
分配:
Allow-Origin' header is present on the requested resource. Origin 'https://chat.mydomain.nl' is therefore not allowed access. The response had HTTP status code 503.
检查值:
<% session[:contacts_available]=true %>
答案 0 :(得分:2)
如果您想明确检查它是true
,而不是truthy
:
<% if session[:contacts_available] == true %>
或
<% if TrueClass === session[:contacts_available] %>
如果truthy
(false
也不nil
}就足够了:
<% if session[:contacts_available] %>
问题标记按照惯例用于方法名称结尾,不应该将其“以防万一”。
答案 1 :(得分:1)
是的,你可以为会话分配布尔值,在if语句中检查它,删除?
。
session[:contacts_available] ? "Found" : "Not Found"
OR
<% if session[:contacts_available] %>
<p> Yeah Contact Found </p>
<% else %>
<p>Contacts not found </p>
<% end %>
布尔值:
true == true # returns true
false == true # returns false
如果声明:
#session[:contacts_available] = true
if true
puts "True"
else
puts "false"
end
答案 2 :(得分:1)
你可以试试。您不应要求?
session[:contacts_available]?
我认为你想检查它的存在是否为真,所以if true
执行块,否则执行另一个
<% if session[:contacts_available] %>
<p> Donec interdum turpis eget leo lobortis, sit amet lacinia ante vulputate. Maecenas hendrerit
euismod nulla in semper. Donec arcu nibh, faucibus at posuere id, dapibus non tellus. </p>
<% else %>
<p> You're logged in as : <%= current_user.email %> <%= link_to "Log Out", logout_path %> </p>
<p> Welcome to our service. You currently don't have any contact details under your username.
Please fill the below form to show the first contact detail of yours. </p>
<% end %>