I would like to provide (in Alfresco 4.0.e) the mechanism which wraps the JSON output text in parentheses and a function name (the callback). A callback is invoked by adding the following URL parameter on JSON URL requests: alf_callback=function where function is the name of a client-side JavaScript function to be invoked.
As suggested here: http://wiki.alfresco.com/wiki/Web_Scripts#JSON_Callbacks I have tried adding this line "<property name="allowCallbacks"><value>true</value></property>" in this cofiguration file "/opt/alfresco-4.0.d/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/web-scripts-application-context.xml"
but now when my application tries to execute a script, it appears a login window with unknows username and password…
Hi, your application must pass a valid ticket when you call a webscript, unless you have a SSO mechanism that sets a cookie for Alfresco. Namely, you can add to your url the fragment alf_ticket=<TICKET_hex_sequence> This sequence can be obtained using this Alfresco webscript username>&pw=<password>'>http://localhost:8080/alfresco/service/api/login?u=<username>&pw=<password> Conversely if you get a basic authentication dialog and provide correct login/pwd for a existing user this will be kept while your session is valid and asked no more.
Hope this helps
P.S.: but why do you need JSON callbacks? This could lead to many security issues…
