[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-2697) Add attribute to s:link tag to make creation of magic dataModelSelection URL parameter optional

[Mauricio Seeberger (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBSEAM-2697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12481206#action_12481206 ] 

Mauricio Seeberger commented on JBSEAM-2697:
--------------------------------------------

Recently I had the same problem. The simplest solution is adding an
  <f:param name="dataModelSelection" />
as _first_ parameter inside your s:link to prevent the dataModelSelection being rendered. It works in Seam 2.1.1.GA.

> Add attribute to s:link tag to make creation of magic dataModelSelection URL parameter optional
> -----------------------------------------------------------------------------------------------
>
>                 Key: JBSEAM-2697
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-2697
>             Project: Seam
>          Issue Type: Feature Request
>          Components: JSF Controls
>    Affects Versions: 2.0.1.GA
>            Reporter: Wolfgang Schwendt
>            Priority: Minor
>         Attachments: JBSEAM-2697-patch-20081023.txt
>
>
> When an s:link component (org.jboss.seam.ui.component.UILink) is placed into a h:dataTable backed by a javax.faces.model.DataModel,  the s:link automatically generates the magic token for the magic "dataModelSelection" parameter regardless of whether the latter is really needed or not.
>  
> This can generate ugly URLs.    The following example is particulary ugly:
> http://127.0.0.1:8080/seminaris/seminarDetails.seam?seminarId=2&dataModelSelection=sem%3AzumSeminarAnmelden_szSeminarSuchen_seminarListeDataModel%5B1%5D&actionMethod=zumSeminarAnmelden%2FseminarSuchen.xhtml%3AzumSeminarAnmelden_seminarBuchenAction.selectSeminar
> Without the "dataModelSelection" parameter, the URL would look much cleaner:
> http://127.0.0.1:8080/seminaris/seminarDetails.seam?semId=2
> So my question:   Couldn't we make the "dataModelSelection" parameter optional? (For example, by adding an attribute to the s:link tag).
> Btw:  I'm aware that  org.jboss.seam.ui.component.UISeamCommandBase.getUrl() is the culprit that triggers inclusion of the the dataModelSelection parameter, so I know how to remove the dataModelSelection parameter generation, but it would be nice if also the officially released Seam version allowed the deactivation of the magic token generation.
> Further, no magic token is generated if a UIDataTable is supplied by a normal List rather than a DataModel (cf. UISeamCommandBase.getSelection() ), but unfortunately there can be cases where it makes sense to supply the table data as DataModel rather than normal List.

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