在 rails 上为 jRuby/ruby 中的会话属性分配布尔值
Assigning boolean value to session attribute in jRuby/ruby on rails
如何将布尔值分配给会话属性并read/check它来自另一个地方?
这是正确的方法吗?
正在分配:
<% session[:contacts_available]=true %>
检查值:
<% 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 %>
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
和 nil
)都不够:
<% if session[:contacts_available] %>
按照约定,问号用于方法名结尾,不应该“以防万一”。
是的,您可以将布尔值分配给会话,以在 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
如果语句:
#session[:contacts_available] = true
if true
puts "True"
else
puts "false"
end
你可以试试。你不应该在 session[:contacts_available]?
中要求 ?
我想你想检查它是否存在,所以 if true
是执行块,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 %>
如何将布尔值分配给会话属性并read/check它来自另一个地方?
这是正确的方法吗?
正在分配:
<% session[:contacts_available]=true %>
检查值:
<% 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 %>
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
和 nil
)都不够:
<% if session[:contacts_available] %>
按照约定,问号用于方法名结尾,不应该“以防万一”。
是的,您可以将布尔值分配给会话,以在 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
如果语句:
#session[:contacts_available] = true
if true
puts "True"
else
puts "false"
end
你可以试试。你不应该在 session[:contacts_available]?
?
我想你想检查它是否存在,所以 if true
是执行块,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 %>