Forum Discussion

kavithams's avatar
kavithams
Guide
7 years ago

Freemarker replace string operation does not work inside a function

We need to replace certain characters in a string in freemarker. Generally we do this. <#assign message = message?replace("old","new") />   But this replace operation does not work when used with ...
  • TariqHussain's avatar
    TariqHussain
    7 years ago

    kavithams - Small edit in your code and it worked fine. Strange but you have to use a different variable inside a function.

     

    Before

     

    <#function replaceVal msg>
      <#assign msg = msg?replace('following ','FOLLOWING') />
      <#return msg />
</#function>

     

     

    After

     

    <#function replaceVal msg>
      <#assign repleacedText = msg?replace('following ','FOLLOWING') />
      <#return repleacedText />
</#function>

     

     

    Also, you if you want to ignore case-sensitive, you can pass another parameter  'i" as mentioned by PerBonomi

    E.g

     

    <#assign repleacedText = msg?replace('following ','FOLLOWING', 'i') />

     

TariqHussain's avatar
TariqHussain
Boss
7 years ago

kavithams - Can you please share dummy text which you trying to replace and couldn't replace with function?

 

I tried to replace a string using your code and it worked without any issue. 

 

 

<#assign message = "this is old value" />
<#assign message = message?replace("old","new") />

${replaceVal(message)}

<#function replaceVal message>
     <#assign message = message?replace("old","new") />
     <#return message />
</#function>

I got result "this is new value". 

 

 

You can try this function here 

  • PerBonomi's avatar
    PerBonomi
    Boss
    7 years ago

    Maybe it needs to be case insensitive?

    ?replace("old", "new", "i")

  • kavithams's avatar
    kavithams
    Guide
    7 years ago

     

    TariqHussain Thank you for your reply.

    I'm sharing the the code lines below. I have this code within an endpoint between; if this info helps in anyway. The null variable "surveyUrl" uninitialised is intensional so as to throw a required exception to try "replace" with.

     

    <#attempt>

    <script type= text/javascript>

    window.location.href="${surveyUrl}";
    </script>

    <#recover>
    <#assign errorMsg = .error/>
    <#assign msg = errorMsg?replace('following ','FOLLOWING') />
    <#--<#assign msg = msg?replace("'","\'") />-->
    msg : ${msg}<br>

    <br>calling function replaceVal...<br>

    msg : ${replaceVal(errorMsg)}

    </#attempt>

     

    <#function replaceVal msg>

    <#assign msg = msg?replace('following ','FOLLOWING') />
    <#return msg />
    </#function>

    • TariqHussain's avatar
      TariqHussain
      Boss
      7 years ago

      kavithams - Small edit in your code and it worked fine. Strange but you have to use a different variable inside a function.

       

      Before

       

      <#function replaceVal msg>
      <#assign msg = msg?replace('following ','FOLLOWING') />
      <#return msg />
</#function>

       

       

      After

       

      <#function replaceVal msg>
      <#assign repleacedText = msg?replace('following ','FOLLOWING') />
      <#return repleacedText />
</#function>

       

       

      Also, you if you want to ignore case-sensitive, you can pass another parameter  'i" as mentioned by PerBonomi

      E.g

       

      <#assign repleacedText = msg?replace('following ','FOLLOWING', 'i') />

       

      • kavithams's avatar
        kavithams
        Guide
        7 years ago

        Using a differently named variable inside function is really strange but your solution worked great for me. Thank you.