How to get the Maximum index count for TemplateRepeatIndex in DWT

Question

I have a component in tridion where its metadata design has a field called 'list' which is populated using Categories and Keywords

I used a DWT code to populate items present in the list using the following code using My DWT TBB

<!-- TemplateBeginRepeat name="Metadata.list" -->

    <!-- TemplateBeginIf cond="list" --> 
        @@RenderComponentField('list',TemplateRepeatIndex)@@ ,
    <!-- TemplateEndIf -->

<!-- TemplateEndRepeat -->

but Im getting preview as

one,two,three,four,five,

desired output should be like: one,two,three,four,five

so for this i need to get the maximum count of "TemplateRepeatIndex" Is there any inbuilt function to check the same.

using Tridion-sp1,2011.

Arjen Stobbe · Accepted Answer · 2012-09-03T13:46:55.867

9

You can solve this with the built in function: CollectionLength.

When you have a multi-valued text field "multiValuedField" you can find the item count using the following expression:

@@CollectionLength("Component.Fields.multiValuedField")@@

Collection Length receives an expression that is the fully qualified name of an item and a value selector of a package item.

The value returned is a string. When you need to perform an integer comparison or calculation you need to parse the value to an integer:

@@parseInt(${CollectionLength("multivalued")})@@

This works because the string between @@ and ${} is parsed as JScript.

edited Sep 03 '12 at 13:46

answered Aug 21 '12 at 12:24

Arjen Stobbe

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its not a multivalued feild.Its a text field, with list of type 'Selection Box' – User 4.5.5 Aug 21 '12 at 12:36
1

isn't it still a multi-valued text field? You have to select a text field, and then a list type and allow multiple values. – Arjen Stobbe Aug 21 '12 at 12:38
the CollectionLength is not working for the above field type. – User 4.5.5 Aug 21 '12 at 12:51
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I have run a test with a multi-value text field, with list type set to Select Box, and it seems to work just fine. ` 5 select ` – Arjen Stobbe Aug 21 '12 at 13:06
@@RenderComponentField("multivalued", TemplateRepeatIndex)@@ – User 4.5.5 Aug 23 '12 at 09:31
i'm unable to get the last item in the list – User 4.5.5 Aug 23 '12 at 09:32
@@CollectionLength("multivalued")@@ will return a string and if we subtract 1 from that string in DWT it is taking the whole as a string instead of performing subtraction,this might be the problem.How can we overcome this? – User 4.5.5 Aug 23 '12 at 10:26
2

This would do it: @@parseInt(${CollectionLength("multivalued")})@@ This works because the string between @@ and ${} is parsed as JScript. – Arjen Stobbe Aug 23 '12 at 14:56
1

@Arjen: it might make sense to update your answer with that last snippet, so it's a bit easier to find for those that stumble upon this later. – Frank van Puffelen Aug 25 '12 at 11:55

score 6 · Answer 2 · answered Aug 21 '12 at 10:42

6

An easy solution would be to switch your logic around.

You can check if TemplateRepeatIndex is 0. If it is not, output the comma in front of the value.

answered Aug 21 '12 at 10:42

Peter Kjaer

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Of course, it's obvious now you mention it - I think I've even used that approach before... – Jeremy Grand-Scrutton Aug 21 '12 at 10:48
yup, thats the logic i'm currently using.Thanks. – User 4.5.5 Aug 21 '12 at 12:50

score 2 · Answer 3 · answered Aug 21 '12 at 09:54

2

I believe the only way to do this would be to create a TBB that adds the field count as an item in the package. You would then be able to do the following:

<!-- TemplateBeginRepeat name="Metadata.primary_topic" -->

<!-- TemplateBeginIf cond="primary_topic" --> 
@@RenderComponentField('primary_topic',TemplateRepeatIndex)@@<!-- TemplateBeginIf cond="TemplateRepeatIndex &lt; PrimaryTopicCount"--> ,<!-- TemplateEndIf -->
<!-- TemplateEndIf -->

<!-- TemplateEndRepeat -->

answered Aug 21 '12 at 09:54

Jeremy Grand-Scrutton

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you mean a C# TBB. Can we take a loop in which we set a variable to count the repeatIndex and then after the end of the loop declaring another loop to get the value from the variable which gives the maximum count. – User 4.5.5 Aug 21 '12 at 09:57
A C# Fragment or Assembly that counts the number of primary_topic values and pushes this count value to the package. – Arjen Stobbe Aug 21 '12 at 10:09

Frank van Puffelen · Answer 4 · 2012-08-21T13:13:53.250

2

Walter solved and explained this topic a few years ago by introducing a custom function.

http://sdltridionworld.com/community/extension_overview/dreamweavercia.aspx

Don't forget to recompile his code for the current version of Tridion.

Update: you can find all built-in functions (and examples of their usage) that Tridion has for use in DWT on this page: http://code.google.com/p/tridion-practice/wiki/BuiltInFunctionsForUseInHtmlTemplates

edited Aug 21 '12 at 13:13

answered Aug 21 '12 at 11:21

Frank van Puffelen

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so without defining any custom functions, we cant get the maximum value count for TemplateRepeatIndex.Any poniters to inbuilt DWT functions?. – User 4.5.5 Aug 21 '12 at 12:49
http://code.google.com/p/tridion-practice/wiki/BuiltInFunctionsForUseInHtmlTemplates – Frank van Puffelen Aug 21 '12 at 13:13

How to get the Maximum index count for TemplateRepeatIndex in DWT

4 Answers4