Using Gravity Forms ‘gform_date_min_year’ PHP filter

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The gform_date_min_year filter allows you to set the minimum year displayed in the date field’s year drop-down list and the HTML5 min attribute for the date field’s year input.

Usage

add_filter('gform_date_min_year', 'set_min_year');

Parameters

  • $min_year (string) – The minimum date to be filtered. Defaults to 1920.
  • $form (array) – The current form object.
  • $field (array) – The current field object.

More information

See Gravity Forms Docs: gform_date_min_year

Examples

Set minimum year to 1900

This example sets the minimum date to 1900.

add_filter('gform_date_min_year', 'set_min_year');

function set_min_year($min_year) {
    return 1900;
}

Set minimum year for a specific field on a specific form

This example sets the minimum year for field ID 5 on form ID 7 to 2014.

add_filter('gform_date_min_year', function($min_year, $form, $field) {
    return $form['id'] == 7 && $field->id == 5 ? 2014 : $min_year;
}, 10, 3);

Note: This code should be placed in the functions.php file of your active theme.

Source Code: This filter is located in the following methods in includes/fields/class-gf-field-date.php:

  • GF_Field_Date::get_field_input()
  • GF_Field_Date::get_year_dropdown()