[seam-issues] [JBoss JIRA] Commented: (SEAMFACES-37) Attach a UIFormValidator to a UIForm automatically via name resolution

[Lincoln Baxter III (JIRA)]

    [ https://jira.jboss.org/browse/SEAMFACES-37?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12535593#action_12535593 ] 

Lincoln Baxter III commented on SEAMFACES-37:
---------------------------------------------

On PreValidateComponentEvent --
if component == UIForm, search for validator with same ID as name of form
attach UIFormValidator as child element, and attach validator instance to UIFormValidator instance.

Unfortunately, this assumes the existance of only 1 FormValidator per form, which is likely not the case in many scenarios; It encourages breaking separation of concerns (where now you have only 1 validator handling multiple scenarios per form -- if you do have multiple scenarios-- and many different combinations of fields that may or may not be related.This also breaks re-use of FormValidators by hard-binding form field IDs to validator field names.

There is also the danger of bleeding across views, where a formValidator is created that "accidentally" becomes attached to another form with the same name on a different page, or when you want to use the same form-name, but can't because you will automatically trigger form validation (that would likely fail (forcing you to disable it in some way, or choose a different name.)

This could also have the undesired effect of attaching validators that are not intended to be form validators (perhaps validators that were not even defined by the developer themselves -- e.g.: included in a JAR file.)

> Attach a UIFormValidator to a UIForm automatically via name resolution
> ----------------------------------------------------------------------
>
>                 Key: SEAMFACES-37
>                 URL: https://jira.jboss.org/browse/SEAMFACES-37
>             Project: Seam Faces
>          Issue Type: Feature Request
>          Components: UI Components, Validation & Conversion
>            Reporter: Lincoln Baxter III
>
> Attach a UIFormValidator to a UIForm via name resolution.
> If the name of the form matches the name of the validator, attach the validator to the form and enable it.

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