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Hook Examples

Set custom value in repeating field

Use the code below to set a custom value in a repeating field. Replace 508 with the ID of the repeating section field. Replace 11700 with the ID of the field that you want to modify.
See example >
Remove special characters

It checks to ensure that no special characters are in the values inputted by the form user.

It was developed to detect and prevent special characters being added to the database.

It was needed to support the Comprehensive Google Map plugin, as that plugin does not like having non-alpha-numeric characters in any field it is displaying. The plugin is here: http://wordpress.org/plugins/comprehensive-google-map-plugin/

If you have dev / test / staging / production instances of WP, be sure to use the production form IDs in your production functions.php.

See example >
Only allow the action once

There may be times when an email or another form action is set to trigger on update or after successful payment, but you really only want it to trigger once. This example uses two hooks: one to set when an action has been triggered, and one to stop it the next time.
See example >

Create Multiple Entries in Form B from a Repeatable Field in Form A

Tutorial and code example for creating multiple entries in one form from a repeatable field in another.
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Redirect to URL in a new tab

How to redirect to URL on submit, and open the URL in a new tab
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Autopopulating Dropdown Fields with Autocomplete Enabled

When autocomplete is enabled on a dropdown field, your standard code will not work to autopopulate it.

If you insert any kind of javascript that intends to alter a dropdown field which has . . . autocomplete enabled, the following code snippet has to be added in order for any changes to be reflected : $("select[name='item_meta[123]']").trigger("chosen:updated"); . where item meta[123] is the dropdown field which you are trying to alter.

That little snippet is required for not just conditionally selecting a default value, but also for conditionally hiding / showing certain dropdown options, etc.

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