_form_validate() does several things that could be separated into standard #element_validate handlers for greater modularity and greater flexibility for modules implementing new form element types.

The check for #required and #maxlength is done inline in _form_validate(), while e.g. #pattern is checked with a separate element_validate handler.

_form_validate() also checks that the submitted value is among the available options in the #options array. Not all elements utilizing an #options array is checked in the same way, so the function is hardcodes to give 'checkboxes' and 'tableselect' elements special treatment. Not very general, and not very friendly towards custom modules implementing new elements that use an #options array.

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#1 element-validate-1.patch38.55 KBc960657

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c960657’s picture

c960657 commented
StatusFileSize
new element-validate-1.patch38.55 KB

This patch tries to separate these checks into #element_validate handlers. It's not quite there yet, but I would like to hear some comments on the general idea.

  • The patch contains several different strategies for generating error for elements with no #title. This is not new code but existing code that has been moved around. I think we should try to standardize this in a separate task.
  • The new feature that was recently added in #742344: Allow forms to set custom validation error messages on required fields is now implemented via an #element_validate handler that appends another #element_validate handler to the end of the list. I am not too happy about the new implemenation. I think we should try to generalize this feature to allow custom error messages for other handlers also, in particular #pattern. But I would prefer if we could pursue this in a separate task.
  • I'm not sure when to use t() and when to use $t() in Form API. Some functions use t() and some use $t(). Should we use $t() everywhere in order to allow all form elements to be used by the installer?

Status: Needs review » Needs work

The last submitted patch, element-validate-1.patch, failed testing.

attiks’s picture

attiks commented

I created #1845546: Implement validation for the TypedData API to try to solve this on all levels, since there are only 10 days left, we need to figure out what needs to be done before feature freeze and what can be done later.

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smustgrave’s picture

smustgrave commented
Issue summary: View changes
Status: Needs work » Postponed (maintainer needs more info)
Issue tags: +triaged-tasks

Since there hasn't been movement on this in many years wonder if it's still a valid task?

If so could the IS be updated please.

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quietone’s picture

quietone commented
Status: Postponed (maintainer needs more info) » Closed (outdated)

There has been no work on this task for 12 years. It is likely that it is no longer needed or has been implemented. And there has been no response to the query made about 2 years ago. Therefor, closing.

If there is work to do here, then either re-open the issue and add a comment or open a new issue and reference this one.