Interpolator: FacesMessages from resource bundle with parame

[mars1412]

short explanation:

the registration.success string in the resource bundle is:

registration.success={0} has been registered sucessfully

in my java file, I just want to add a faces massage like this:

facesMessages.add("#{messages['registration.success']}", "#{webUser.name}");

but this will render to:

{0} has been registered sucessfully

as you can see the parameter {0} has not been replaced with the given parameter

so how would you make seam replace the parameter as expected?

a workaround would of course be, to include the parameter #{webUser.name} directly in the .properties file, like:

registration.success=#{webUser.name} has been registered sucessfully

and to omit the parameter when calling facesMessages.add:

facesMessages.add("#{messages['registration.success']}");

this will of course work, but I do not want to use this, because:

• I don't think it's good practice to inlcude buissnes intelligence in my resource files, because:
  
  • 
    
  • I will have to teach the translators another syntax exception
    
  • if I will ever rename the class of class member, I will probably forget to adopt the .properties file
    
    
  • I cannot re-use the same message. e.g. if I had another registration for customers, I would need another translation: e.g.
    

    registration.success.customer=#{customer.name} has been registered sucessfully

    
    
    
    thanks in advance

[mars1412]

I forgot to post the explanation, why the original code does not work:

facesMessages.add("#{messages['registration.success']}", "#{webUser.name}");

When debugging into the seam source I learned, that this cannot work, because the Interpolator.interpolate() method wil:
examine the given string and try to evaluate all parameters in this string, which means:
1st: "#{messages['registration.success']}" will be evaluated
the one and only expression in this string is #{messages['registration.success']}
the evaluation of this string results in this call:

Interpolator.interpolate("#{messages['registration.success']}", null)

which will return "{0} has been registered sucessfully"
because no parameters have been passed to replace the parameter {0}
then this string will be returned to the original Interpolator.interpolate() function (which has the parameters), but this resulting string will not be reevaluated, so that the given parameters will never be replaced in my message.

[pmuir]

I think you want something like

@In User webUser;

...

facesMessages.addFromResourceBundle("registration.success", webUser.getName());

i.e. you can't add from a resource bundle with interpolation quite like you try.

[mars1412]

that was exactly what I was searching for

tx pete
- U really prevented a newbie of going mad -