(no subject)

Hello, i'm currently trying to dump my object as a json with freemarker
(latest version).

And so i started looking around for existing solution and found one at :
http://ericbrandel.com/2013/03/28/freemarker-container-to-json/
I've pasted the macro on the end of the mail.

Now the problem is when i tried it out, i seem to find an enumerable type,
which cannot be enumerated ?
Here's the exception i got :

Getting the number of items or enumerating the items is not supported on
this sequence+method (wrapper: f.e.b.SimpleMethodModel) value. (Hint 1:
Maybe you wanted to call this method first and then do something with its
return value. Hint 2: Getting items by intex possibly works, hence it's a
"+sequence".)

And this happened on the line of :
<#elseif object?is_enumerable>
...
<#list object as item>

Now i wonder whether i can do a check in the ftl whether this can be
enumerated or not before i actually enumerate it ?
Currently i dont know which field causes that, and why it's not enumerable.

The complete macro :

<#macro objectToJsonMacro object>
<@compress single_line=true>
    <#if object?is_hash || object?is_hash_ex>
        <#assign first="true">
        {
        <#list object?keys as key>
            <#if first="false">,</#if>
            <#assign value><@objectToJsonMacro object=object<key>
/></#assign>
            "${key}" : ${value?trim}
            <#assign first="false">
        </#list>
        }
    <#elseif object?is_enumerable>
        <#assign first="true">
        [
        <#list object as item>
            <#if first="false">,</#if>
            <#assign value><@objectToJsonMacro object=item /></#assign>
            ${value?trim}
            <#assign first="false">
        </#list>
        ]
    <#else>
        "${object?trim}"
    </#if>
</@compress>
</#macro>

Regards,
Bertie

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