[Resolved] Make Taxonomy Optional When in a Select Drop-Down

[Author]

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[aaronM-9]

Is it possible to make it optional for the user to select a taxonomy item by adding a blank line or a "--- not set ---" option at the top of the drop-down list, same as how you would use a select_text attribute for other select fields? Currently, the only way I can see to achieve this is by having a checkbox or multi-select, but neither of these options are desirable for me because I want them to either pick one or none.

Thanks in advance.

- Aaron

[Christian Cox]

There's not an option to do this in the GUI, but you could use some JavaScript to insert the placeholder option programmatically. Another ticket I worked on recently discussed this approach in some detail:
https://toolset.com/forums/topic/cred-module-edit-post-choice-taxonomy-does-not-work/
This ticket also includes some backend validation messages that you may or may not want to include. Let me know if you have questions about this approach.

[aaronM-9]

Hi Christian,

I tried implementing a solution using a similar approach using this JavaScript:

$('.prependoptions').prepend($('<option>--- none selected ---</option>')); 

..and then setting the class of the cred field to "prependoptions". This way I could just assign this class to any taxonomy field on the site and have it prepend the option list without needing JavaScript for each one. However, when I add the class to the field like this...

[cred_field field='religion' class="prependoptions" display='select' single_select="true" output='bootstrap']

..the class does not appear in the HTML when I inspect the page (see attached image). I was actually having a similar issue with featured image shortcode earlier (not taking a manually assigned class) so I guess my question is a broader one now: am I doing something wrong in trying to assign a class?

- Aaron

[aaronM-9]

Update - the issue with the featured image not taking a manually assigned class was resolved by upgrading from Views 2.6-RC to Views 2.6-RC2. However, the class set in the cred_field tag is still not translating over to the actual select tag in the HTML output.

[Christian Cox]

Thanks for the report, we currently have an internal ticket in place to address the issue with classes being applied inconsistently in cred_field shortcodes. Most likely this will be addressed after the stable M2M release. For now, it's probably more practical to use a wrapping div to target the select field, like this:

<div class="prependoptions">
[cred_field ... ]
</div>

jQuery('.prependoptions select').prepend...