Question to HTL or Sightly experts - What is wrong with the HTL expression "${'{0}' in title ? title @ format=currentPage.parent.title : title}"? | Community
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S
Sravan_Kumar_Si
Level 2
December 4, 2020
Solved

Question to HTL or Sightly experts - What is wrong with the HTL expression "${'{0}' in title ? title @ format=currentPage.parent.title : title}"?

  • December 4, 2020
  • 7 replies
  • 3889 views

model.title contains one of the two values - "Back to {0}" or "Back"
<sly data-sly-test.title="${model.title}"/> 

<a>${'{0}' in title ? title @ format=currentPage.parent.title : title}</a>

 

Neither

${'{0}' in title ? title @ format=currentPage.parent.title : title}

nor

${'{0}' in title ? (title @ format=currentPage.parent.title) : title}

gives the expected result. What is the correct way?

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Best answer by Anudeep_Garnepudi

Hi @sravan_kumar_si 

I would suggest if you already have a support script(Sling Model or Use API), better write logic in the script itself like below. This will make you view simple ans clean.

Support Script:

model.title = title.contains("{0}") ? title.replace("{0}", currentPage.parent.title) : title; (JavaScript Use API example, you can try similar in Java Use API or Sling Model)

HTL:

<a>${title}</a>

-AG

7 replies

Manjunath_K
Manjunath_K
Level 7
December 4, 2020

Hi @sravan_kumar_si 

Please use the below mentioned format option syntax.

 

<sly data-sly-test.containsText="${'{0}' in title}">
     ${title @format = currentPage.parent.title}
</sly>

 

<sly data-sly-test="${!containsText}">
     ${title}
</sly>

 

Hope this helps!

    Manjunath_K
    Manjunath_K
    Level 7
    December 4, 2020

    @sravan_kumar_si 

    please try adding conditions as mentioned below.

     

    <sly data-sly-test.title="${model.title}"/> 

     

    <sly data-sly-test.containsText="${'{0}' in title}">
         ${title @format = currentPage.parent.title}           <!-- 'parent page title' in title -->
    </sly>

     

    <sly data-sly-test="${!containsText}">
         ${title}                                                                    <!-- title -->              
    </sly>

     

     

     

     

    Kiran_Vedantam
    Community Advisor
    Kiran_VedantamCommunity Advisor
    Community Advisor
    December 4, 2020

    Hi @sravan_kumar_si,

     

    Here is the working code:

     

    <sly data-sly-test.title="${model.title}"/> 

    <a>${'{0} in title' @ format= currentPage.getParent.getTitle ? currentPage.getParent.getTitle : title} </a>

     

    Put the {0} and the other strings in single quotes.

     

    Thanks,

    Kiran Vedantam.

      S
      Sravan_Kumar_SiAuthor
      Level 2
      December 4, 2020
      Hi Kiran, Thanks for getting back but this did not solve my issue. '{0}' in title - here, I want to check for the existence of substring '{0}' in value of title variable. If I enclose every thing inside '' then "in" is not considered as an operator and "title" is not taken as value of the variable.
      S
      Sravan_Kumar_SiAuthor
      Level 2
      December 4, 2020

      Hi @kiran_vedantam  and @manjunath_k , Thanks for getting back but this did not solve my issue. My objective is if the place holder {0} is there in the value of title then replace it otherwise simple use the value of title. '{0}' in title - this is to check for the existence of substring '{0}' in value of title variable. If I enclose every thing inside '' then "in" is not considered as an operator and "title" is not taken as value of the variable.

      Kiran_Vedantam
      Community Advisor
      Kiran_VedantamCommunity Advisor
      Community Advisor
      December 4, 2020

      Hi to replace and use parentpageTitle instead of title you can use the below code:

       

      <a>${'{0}' in title ? currentPage.getParent.getTitle : title}</a>

       

      I am not sure why are you using @ format= here.

       

      Thanks,

      Kiran Vedantam

      S
      Sravan_Kumar_SiAuthor
      Level 2
      December 4, 2020

      model.title contains one of the two values - "Back to {0}" or "Back" <sly data-sly-test.title="${model.title}"/>

      My objective is if the place holder {0} is there in the value of title then replace it otherwise simple use the value of title.

      Anudeep_Garnepudi
      Community Advisor
      Anudeep_GarnepudiCommunity AdvisorAccepted solution
      Community Advisor
      December 4, 2020

      Hi @sravan_kumar_si 

      I would suggest if you already have a support script(Sling Model or Use API), better write logic in the script itself like below. This will make you view simple ans clean.

      Support Script:

      model.title = title.contains("{0}") ? title.replace("{0}", currentPage.parent.title) : title; (JavaScript Use API example, you can try similar in Java Use API or Sling Model)

      HTL:

      <a>${title}</a>

      -AG

        S
        Sravan_Kumar_SiAuthor
        Level 2
        December 4, 2020
        Thanks for your suggestion. But I wanted to know why the way I tried did not work?
        Anudeep_Garnepudi
        Community Advisor
        Anudeep_GarnepudiCommunity Advisor
        Community Advisor
        December 4, 2020

        Hi @sravan_kumar_si 

        1. We can not use options(@) in ternary operator which will results to an Exception (<a>${'{0}' in title ? title @ format=currentPage.parent.title : title}</a>)
        2. Even if you use if use it at the end, it will be ignored an @option will always execute <a>${!('{0}' in title) ? title : title @ format=currentPage.parent.title}</a>

        If you want to do it from view(HTL), the best option is having two expressions

        <a>${'{0}' in model.title ? model.title : "" @ format=currentPage.parent.title}  ${!('{0}' in model.title) ? model.title : ""}</a>

        If you want your view(HTL) to be simple and more readable, as I mention earlier write the logic in support script.

        Hope you got the Answer.

        -AG

         

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