topic Custom content type with mimetype constraint in Alfresco Archive

Custom content type with mimetype constraint

cszamudio — Sun, 08 Jun 2014 19:06:06 GMT

Hi,I'm having trouble getting my head around this. Is it possible to create a custom type which has constraints on the mimetype of the content. For example, a content type which can only have "application/pdf" as its content mimetype? I realize this can be accomplished at the application-level duri

Re: Custom content type with mimetype constraint

kaynezhang — Mon, 09 Jun 2014 08:05:46 GMT

I'am afraid there is no such feature in model level.

Re: Custom content type with mimetype constraint

ipirat — Tue, 10 Jun 2014 12:52:00 GMT

Hi Carlos,

it should be possible to add a constraint in the model, e.g.


<type name="foo:bar">
   <parent name="cm:content"/>
   <overrides>
     <property cm:mimrtype>
        <constraints>
           <constraint type="REGEX">
             <property name="expression" value="application/pdf">
           </c onstraint>
         </constraints>
      </property>
   </overrides>
</type>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍

(not having my dev environment at hand – the syntax may be slightly incorrect, but you should get the idea)

BUT: mime type is typically something managed by the system, so you'll have to check whether this will provide you with what you need:

<ul>
<li>if mime type is not PDF, the system should not let you change type into your content type foo:bar
<li>if content type of the object is foo:bar, the system should not let you change the mime type to anything other than PDF
<li>there may be other cases that need consideration…
</ul>

Re: Custom content type with mimetype constraint

cszamudio — Wed, 11 Jun 2014 11:39:00 GMT

Thanks for the suggestion. I tried something similar, but I'll experiment with different forms of the property name and if I find something that works, I'll post it. Cheers.

Re: Custom content type with mimetype constraint

kaynezhang — Wed, 11 Jun 2014 14:56:36 GMT

I don't think iPirat'solution will work,because:
"cm:mimetype" is not a property of "cm:cotent type" and the overrided logic will not work on it.
Correct me if I'm wrong