problem with ftl template.

[need]

Hi all,

I have a problem with a dashlet 3.4d with Alfresco Share. I have followed many tutorials but I can not solve my problem. Let me explain.

I created Alfresco webscripts makes me a search for all documents that have a certain aspect. and return a json and it works if I access the page http://localhost:8080/alfresco/service/let/modelli visualize the result in json format.

{"modelli" : [
        {"name" : "consulente.xls",
         "link" : "\/alfresco\/d\/d\/workspace\/SpacesStore\/b632375f-e6a1-40e2-a2ee-dd858a4f8dc2\/consulente.xls",
        }
]
}
‍‍‍‍‍‍‍‍

Now I have created a dashlet of Alfresco Share, which should see the list of documents that have a certain aspect.

Post the code for clarity:

- getmodel.get.desc.xml

<webscript>
   <shortname>Crea da modello</shortname>
   <description>Nuovo documento da modello esistente</description>
   <!– one of dashlet, site-dashlet or user-dashlet –>
   <family>dashlet</family>
   <url>/components/dashlets/getmodel</url>
</webscript>‍‍‍‍‍‍‍

- getmodel.get.html.ftl

<div class="dashlet">
   <div class="title">Nuovo documento da modello esistente</div>
   <div class="body scrollableList">
     <div class="detail-list-item first-item last-item">
        <h5>Modelli di documento</h5>
      <table>
         <#list modelli as mod>
            <tr>
               <td><b>Name</b></td><td>${mod.name}</td>
            </tr>
            
            <tr>
            <td><b>Link</b></td><td><a href="${url.context}${mod.link}?guest=true">${url.context}${mod.link}</a></td>
            </tr>
         </#list>
      </table>
     </div>
   </div>
</div>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

- getmodel.get.js

var connector = remote.connect("alfresco");
var data = connector.call("let/modelli");
if (data.status == 200) {
var result = eval('(' + data + ')');
model.modelli = result["modelli"];
}else{
   model.modelli="zzzz";
}
‍‍‍‍‍‍‍‍‍‍

And this is  exception in tomcat log.

Exception: freemarker.template.TemplateException - Expected collection or sequence. modelli evaluated instead to freemarker.template.SimpleScalar on line 7, column 32 in org/alfresco/components/dashlets/getmodel.get.html.ftl.‍

I understand that the problem are in the ftl template file but I can not figure out how I can fix and what is wrong. Help me to understand?

Thank you all for the availability.

[jordiv]

It seems that your modelli variable isn't a list.
Have you tried printing its value?

Cheers,
Jordi.

[need]

no i don't have printed this variable? How can i print the variable in file log for example?

Thanks

[need]

the instructions var data = connector.call("let/modelli") what it returns? And in what format?

[scouil]

Or it could just be that  connector.call("let/modelli");  fails (doesn't return with a 200 status).
In this case you enter in the "else" where  model.modelli is assigned the string "zzzzzz"  which converts into a freemarker.template.SimpleScalar.
I'm not sure what you're trying to do with this but, even in the "else",  model.modelli should be an array or your html template will fail.

[need]

Ok I printed the variable (modelli) in the dashlet and i see zzzz, then it means that the state of the remote call is not 200. How can I fix this?

I have to change something in the connection string? (Let / modelli)?

Thank a lot.

[jordiv]

Try using get instead of call and put a "/" at the beginning:

var data = connector.get("/let/modelli");
‍‍‍

It this doesn't work you can check what status code are you getting from your webscript.

Cheers,
Jordi.

[scouil]

To begin with, data.status doesn't directly returns the code but a ResponseStatus object ( http://wiki.alfresco.com/wiki/Surf_Platform_-_Freemarker_Template_and_JavaScript_API#ResponseStatus ).
So you should do

if (data.status.code == 200)‍

   instead of  

if (data.status == 200)‍

But I would advise you to return the response in the modelli whatever the code is:

var connector = remote.connect("alfresco");
var data = connector.call("let/modelli");
var result = eval('(' + data + ')');
model.modelli = result;
‍‍‍‍‍

and handle the display in your html template

<#if modelli.status.code == 200>
    <table>
         <#list modelli.response["modelli"] as mod>
            <tr>
               <td><b>Name</b></td><td>${mod.name}</td>
            </tr>
            <tr>
            <td><b>Link</b></td><td><a href="${url.context}${mod.link}?guest=true">${url.context}${mod.link}</a></td>
            </tr>
         </#list>
    </table>
<#else>
    Error ${modelli.status.code}: <br />
    ${modelli.status.message}
</#if>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I haven't tested it so it might be full of syntax errors but I hope you get the point.

[need]

ok i ok I found the problem that did not entry in the IF block. I had to put a slash at the beginning of the string let / models (/ let / templates /).

But now I can print var data is returned:    {"modelli" : [ {"name" : "consulente.xls", "link" : "\/alfresco\/d\/d\/workspace\/SpacesStore\/b632375f-e6a1-40e2-a2ee-dd858a4f8dc2\/consulente.xls", } ] }

Now how do I access from ftl template at  variable name and link variable?

Thanks at all.

[scouil]

Hum… I'm OK to help when you're stuck but don't expect us to do your whole job.
How about you give it a try on your own and come back posting here if you're actually stuck? I bet you'll get it to work with the first thing you'll try.