This widget could not be displayed
<#assign test = "" /> <#attempt> <#assign test2 = test?number /> <#recover> <#assign test2 = 1 /> </#attempt> test2 = ${test2} My thought is simple. If the variable cannot be converted to a...
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Hi peterlu,
Freemarker actually has a directive for testing whether a variable is a number, so you may want to explore that as an alternate to using attempt/recover. For example:
<#if test?is_number> ... </#if>
Reference materials available here:
http://freemarker.sourceforge.net/docs/ref_builtins_expert.html#ref_builtin_isType
The behavior you describe definitely sounds odd, but there'd probably need to be some additional investigation to determine what is the expected behavior. If you believe this is a bug, I'd suggest filing a case so that it can get on the Support team's radar and be tracked through resolution.
Hi AdminN,
I know that there is a is_number function. But I wont use it. Thank you for the suggestion anyway.
Use case: I want to get a custom query string value from url for pagination purpose. eg. http://...../?my-page-number=3
When I get this my-page-number from url, it will always be a string. I need to convert it into number.
But it is possible that url may be hacked by ?my-page-number=bar
My only intertest is why the "This widget cannot be displayed" only show up for non-admin users. I have been written so many custom components for lithium. And this question is alway bugging me. According to freemarker docs, attempt/recover looks like java try catch. So why Lithium show up this error message for users, not admins?
BTW, I am not talking about a string to number conversion here only. It is about the general attempt/recover.
I had the same issue here and never did get to the bottom of it. Frustratingly im getting the same problem again while using an if/else block on another section of code. Any update on this would be very helpful
Hi,
I got the same issue. It seems to me that Lithium catch the error before Freemarker does.
I want to test if one node of the REST result exists:
<#assign user_ranking = rest("/users/id/${user.id}/ranking").ranking /> <#attempt> <#assign user_ranking_image_left = author_ranking.display.left_image.url?replace("http://www.cvous.com", "")?js_string /> <#recover> <#assign user_ranking_image_left = "" /> </#attempt> <#attempt> <#assign user_ranking_image_right = author_ranking.display.right_image.url?replace("http://www.cvous.com", "")?js_string /> <#recover> <#assign user_ranking_image_right = "" /> </#attempt>But the "attempt" test will generate a "This widget could not be displayed" for anonymous or non admin members.
I don't even know why it works for admin member.
Have a nice day!
Henrik
You might want to check that normal and anonymous users have permission to access the REST API call (as this is outside of the attempt/recover block).
