Re: Access request from tml / standard servlet api role support

Tapestry-security (http://www.tynamo.org/tapestry-security+guide/) supports
request.isuserInRole and provides components similar to the one suggested,
i.e.

<t:security.hasRole role="admin">
    <a t:id="saveButton" type="button" href="#">SAVE DATA</a>
</t:security.hasRole>

Kalle




On Fri, Apr 27, 2018 at 3:41 PM, pico.dev <[email protected]> wrote:

> Hi,
>
> Maybe you can implement a new conditional component that checks the role
> and render or not its body. Something like this:
>
> <t:isUserInRole role="ADMIN">
>     <a t:id="saveButton" type="button" href="#">SAVE DATA</a>
> </t:isuserInRole>
>
> See https://tapestry.apache.org/component-rendering.html
>
> Regards,
>
> El sáb., 28 abr. 2018 a las 0:12, Luca Arzeni (<[email protected]>)
> escribió:
>
> > Hi,
> > I'm using tapestry5.4 with java 8.
> >
> > I am using the standard servlet API to check if a user is in role or not,
> > to hide or show buttons, links, and so on.
> >
> > For example, I need to show a button to the user only if the user has
> been
> > granted a role.
> >
> > My usual way to to this is:
> >
> > 1) create a method in the page, for example:
> >
> > @Inject
> > RequestGlobals m_requestGlobals;
> >
> > public boolean isUserAdmin() {
> >         if (m_requestGlobals == null) {
> >                 return false;
> >         }
> >         return m_requestGlobals.isUserInRole("ADMIN");
> > }
> >
> > 2) then, in the tml, check the method using a t:if component, for
> example:
> >
> > <t:if test="userAdmin">
> >                 <a t:id="saveButton" type="button" href="#">SAVE DATA</a>
> > </t:if>
> >
> > This is not so good, since I must reimplement the same method in many
> > pages.
> >
> > Is there any way could I access the requestGlobals directly from tml?
> >
> > My goql would be to write, directly in the tml, something like:
> >
> >
> > <t:if test="request.isuserInRole('ADMIN')">
> >         <a t:id="saveButton" type="button" href="#">SAVE DATA</a>
> > </t:if>
> >
> >
> > Is it possible to do this with tapestry5?
> >
> > Thanks in advance,
> > larzeni
> >
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>