Grails 3 Interceptors

[Joud Kassem]

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

[Søren Berg Glasius]

You could find the bean instance of your controller and call the method defining the function.

Something like this:

MyController controller = applicationContext.getBean(MyController)

controller.callMyFunction()

Best regards / Med venlig hilsen,

Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
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On Mon, 26 Nov 2018 at 13:11, Joud Kassem <joud.k...@gmail.com> wrote:

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

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[Joud Kassem]

When I do this, I get an error "No bean named 'auth' available"

On Monday, November 26, 2018 at 1:22:45 PM UTC+1, Søren Berg Glasius wrote:

You could find the bean instance of your controller and call the method defining the function.

Something like this:

MyController controller = applicationContext.getBean(MyController)

controller.callMyFunction()

Best regards / Med venlig hilsen,

Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 13:11, Joud Kassem <joud.k...@gmail.com> wrote:

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

--
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[Joud Kassem]

Is it possible to get a bean instance from a controller? I'm getting that the bean is not available!

On Monday, November 26, 2018 at 1:22:45 PM UTC+1, Søren Berg Glasius wrote:

You could find the bean instance of your controller and call the method defining the function.

Something like this:

MyController controller = applicationContext.getBean(MyController)

controller.callMyFunction()

Best regards / Med venlig hilsen,

Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 13:11, Joud Kassem <joud.k...@gmail.com> wrote:

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

--
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[Søren Berg Glasius]

What are you actually trying to archive? The question is, if you would be better off having the method you need to call in a service instead, and then inject that service.

Best regards / Med venlig hilsen,
Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 15:10, Joud Kassem <joud.k...@gmail.com> wrote:

Is it possible to get a bean instance from a controller? I'm getting that the bean is not available!

On Monday, November 26, 2018 at 1:22:45 PM UTC+1, Søren Berg Glasius wrote:

You could find the bean instance of your controller and call the method defining the function.

Something like this:

MyController controller = applicationContext.getBean(MyController)

controller.callMyFunction()

Best regards / Med venlig hilsen,

Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 13:11, Joud Kassem <joud.k...@gmail.com> wrote:

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

--
You received this message because you are subscribed to the Google Groups "Grails Dev Discuss" group.

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To view this discussion on the web visit https://groups.google.com/d/msgid/grails-dev-discuss/c0ac05a7-feca-49cb-8359-853faebe4dcb%40googlegroups.com.
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[Joud Kassem]

This is actually what I ended up doing yesterday... having the method in a service and calling it in the interceptor

On Tuesday, November 27, 2018 at 6:41:13 AM UTC+1, Søren Berg Glasius wrote:

What are you actually trying to archive? The question is, if you would be better off having the method you need to call in a service instead, and then inject that service.

Best regards / Med venlig hilsen,
Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 15:10, Joud Kassem <joud.k...@gmail.com> wrote:

Is it possible to get a bean instance from a controller? I'm getting that the bean is not available!

On Monday, November 26, 2018 at 1:22:45 PM UTC+1, Søren Berg Glasius wrote:

You could find the bean instance of your controller and call the method defining the function.

Something like this:

MyController controller = applicationContext.getBean(MyController)

controller.callMyFunction()

Best regards / Med venlig hilsen,

Søren Berg Glasius

Hedevej 1, Gl. Rye, 8680 Ry, Denmark
Mobile: +45 40 44 91 88, Skype: sbglasius
--- Press ESC once to quit - twice to save the changes.

On Mon, 26 Nov 2018 at 13:11, Joud Kassem <joud.k...@gmail.com> wrote:

Hi,

How to call a function defined in a controller in its interceptor in grails 3? 

--
You received this message because you are subscribed to the Google Groups "Grails Dev Discuss" group.

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To view this discussion on the web visit https://groups.google.com/d/msgid/grails-dev-discuss/c0ac05a7-feca-49cb-8359-853faebe4dcb%40googlegroups.com.
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[Jeff Scott Brown]

On 26 Nov 2018, at 6:22, Søren Berg Glasius wrote:

> You could find the bean instance of your controller and call the
> method
> defining the function.
>
> Something like this:
>
> MyController controller = applicationContext.getBean(MyController)
>
> controller.callMyFunction()
>
>

There is really no good reason to ever do that.

It is hard to say exactly what the best solution is without knowing what
you are trying to accomplish but a likely solution is to have that logic
in a Service and inject that service into the interceptor. If the same
behavior is needed from the controller, inject the same service into he
controller.



JSB

--
Jeff Scott Brown
OCI Partner and Principal Software Engineer
OCI Grails and Micronaut Practice Lead

Autism Strikes 1 in 166
Find The Cause ~ Find The Cure
http://www.autismspeaks.org/

[Joud Kassem]

Hi Jeff,

We call some controller functions in the before interceptor to manipulate the passed parameters and check user's permissions ..etc This was fine in grails 2 when the interceptors were defined in the controller itself but in Grails 3, it became a problem. But moving the logic to a service and injecting the service into the interceptor worked fine + I had to move some logic to the interceptor itself... I don't know if this is the best solution but I didn't find another one..

[Jeff Scott Brown]

On 28 Nov 2018, at 2:52, Joud Kassem wrote:

> Hi Jeff,
>
> We call some controller functions in the before interceptor to
> manipulate
> the passed parameters and check user's permissions ..etc This was fine
> in
> grails 2 when the interceptors were defined in the controller itself
> but in
> Grails 3, it became a problem. But moving the logic to a service and
> injecting the service into the interceptor worked fine + I had to move
> some
> logic to the interceptor itself... I don't know if this is the best
> solution but I didn't find another one..
>

Great.

FYI… You should be able to manipulated params and check user
permissions in an interceptor without ever interacting with a
controller. All of the relevant information is available in the
interceptor itself.

I am glad you got a working solution. Well done!

[Joud Kassem]

Thank you! Out of curiosity, is there a guide or a bit of information about how to check user permissions directly in interceptors?

All the best,

Joud

[Jeff Scott Brown]

On 28 Nov 2018, at 13:29, Joud Kassem wrote:

> Thank you! Out of curiosity, is there a guide or a bit of information about
> how to check user permissions directly in interceptors?
>

The way to do that depends on what “check user permissions” really means.

How do you keep track of permissions?