Forum Discussion

Han's avatar
Han
Ace
7 years ago

Add a separator if freemarker loop has more than one item

I am new to logic in freemarker and  having trouble adding a separator in a loop if there is more than one item. My current code below is adding a separator, but it appears after my items; <...
  • VikasB's avatar
    VikasB
    7 years ago

    Han

    It would resolve you problem

    ${userType?keep_before_last("|")}

    I may create an issue if a user does not have any role but I think every user will have at least one role.  Right?

    Here is an updated version.  Here is the output https://prnt.sc/jsccwr

     <#assign userTypeCount = 0>
<#assign userType = ""/>
  <#list restadmin("/users/id/${user.id}/roles").roles.role as role>
    <#assign userType += role.name >
    <#assign userTypeCount ++>
 
    <#-- only add separator if user has more than one role -->
      <#assign userType += ' | '>
  </#list>
${userType}
${userType?keep_before_last("|")}
Han's avatar
Han
Ace

VikasB thanks for the reply.  I am defining the var already. I just left that piece of code out of my snippet above. 

Currently what I am getting displayed for user with one role is: 
"Contributor |" 

If  they have two or more roles I get :
"Administrator | Contributor |"

 

My desired output for one role is 
"Contributor"

and for two would be:
"Administrator | Contributor "


I've played around with a few variations of my condition, with similar results. I can't quite figure out what is going on as this is fairly simple logic. 

VikasB's avatar
VikasB
Boss
7 years ago

Han

It would resolve you problem

${userType?keep_before_last("|")}

I may create an issue if a user does not have any role but I think every user will have at least one role.  Right?

Here is an updated version.  Here is the output https://prnt.sc/jsccwr

 <#assign userTypeCount = 0>
<#assign userType = ""/>
  <#list restadmin("/users/id/${user.id}/roles").roles.role as role>
    <#assign userType += role.name >
    <#assign userTypeCount ++>
 
    <#-- only add separator if user has more than one role -->
      <#assign userType += ' | '>
  </#list>
${userType}
${userType?keep_before_last("|")}
  • Han's avatar
    Han
    Ace
    7 years ago

    Thanks VikasB, that works perfectly! I was hoping there would be something easy to solve my issue.  

    • luk's avatar
      luk
      Boss
      7 years ago

      Han May I suggest a slightly more elegant solution? You can use a sequence and ?join(), feels more clean IMHO...

      <#assign userTypeCount = 0 /> <#-- what is this for? -->
<#-- use a sequence (a.k.a. array) instead of a string -->
<#assign userType = [] />

<#list restadmin("/users/id/${user.id}/roles").roles.role as role>
    <#-- this is how you "update" a sequence/hash in FreeMarker -->
    <#assign userType = userType + [role.name] />
    <#assign userTypeCount ++>
</#list>

<#-- now just join it together with your desired separator...done! -->
${userType?join("|")}