How to call a Grails service in a view?

grails service view gsp
fabien7474 picture fabien7474 · Oct 22, 2009 · Viewed 8.9k times · Source

Simple question : I have a service class (let's say helpersService) and a method def constructURI(params). How can I call this method from a template view.

I have tried the following code without success

<% def helpersService  = new HelpersService() // or def helpersService
%>
<img src="${helpersService. constructURI(params)}"/>

But I get the following result:

No signature of method: com.HelpersService. constructURI() is applicable for argument types...

or (in case I use def helpersService)

Cannot invoke method constructURI() on null object

Any ideas?

Answer

Siegfried Puchbauer picture Siegfried Puchbauer · Oct 22, 2009

Services are not intended to be used inside views. You could create a TagLib where you can get a reference to the service via dependency injection.

Related questions

How do I call a Grails service from a gsp?

How can I invoke a service directly from a view? I'm trying with ${my.domain.service.method}, but it complains it can't find the property. And no, I don't want to use a controller because the view is a template.

Read More
Grails get Session and Management in Service class

I have a problem with Grails Session. I was thinking about having a Service Class for my session handling. So I created a class called "SessionService" (under grails-app/services/grails/). class SessionService { static transactional = true GrailsWebRequest request = RequestContextHolder.currentRequestAttributes() GrailsHttpSession …

Read More
How to unit or integration test use of injected messageSource for i18n in Grails 2.0 service

I make use of a message bundle in one of my services in a Grails 2.0 project for internationalized text. The use case is an email subject that is sent via the mail plugin in an asynchronous way, so it really …

Read More