Gravity Forms - Get a Date value and adjust it, make it into a merge tag - gravity-forms-plugin

Question

So what I want to be able to do is take a field value, a date field, and add a set period of time to it and then make that into a merge tag that I can then add back into that value or use else where.
I know how to make a new merge tag, that's not the issue. My question is how do I get a field value to use in that calculation?
add_filter( 'gform_replace_merge_tags', 'new_date_plus_30', 10, 7 );
function new_date_plus_30( $text, $form, $entry, $url_encode, $esc_html, $nl2br, $format ) {
$merge_tag = '{date_plus_30}';
$new_date = date('m/d/Y', strtotime('+30 days'));
return str_replace( $merge_tag, $new_date, $text );
}
So where I do the new date calculation, I need to be able to pull in a field from that post and use it.
I was also thinking of doing a If / Else script where I would do the date calculation based on what was set in a form. So if a user said repeat this every 15 days, I would have something like:
add_filter( 'gform_replace_merge_tags', 'new_date_plus_30', 10, 7 );
function new_date_plus_30( $text, $form, $entry, $url_encode, $esc_html, $nl2br, $format ) {
if ( $form_id == 34 && $field_id == 2 && $value == 'add 30 days') {
$merge_tag = '{date_plus_30}';
$new_date = date('m/d/Y', strtotime('+30 days'));
}
else if ( $form_id == 34 && $field_id == 2 && $value == 'first of month') {
$merge_tag = '{first_of_month}';
$new_date = date('m/d/Y', strtotime('first of next month'));
}
}
return str_replace( $merge_tag, $new_date, $text );
}
But my issue is still the same. How can I use two filters at the same time? I assume I need to use the gform_get_input_value. Kindly review my code and give feedback is there other way?

Answer 1

Or maybe something like this...
add_filter( 'gform_merge_tag_filter', function ( $value, $merge_tag, $options, $field, $raw_value ) {
if ( $field->id == '2' && $value == 'first of the month') {
$merge_tag = '{the_next_date}';
$thedatetochange = 'Not sure how to get the date value here...';
$value = date('m/d/Y', strtotime($thedatetochange . 'first of the next month'));
return $value;
}
else if ( $field->id == '2' && $value == 'the 15th') {
$merge_tag = '{the_next_date}';
$thedatetochange = 'Not sure how to get the date value here...';
$the_first_date = date('m/d/Y', strtotime($thedatetochange . 'first of the next month' ));
$value = date('m/d/Y', strtotime($the_first_date . '+15 days' ));
return $value;
}
}, 10, 5 );

Answer 2

So after doing more digging, would I be able to use something like this to get the value of the field?
$theDateToChange = rgar( $entry, ‘3’);
This assumes that the field 3 is a date value. Would this work for retrieving the current entry date?

Answer 3

The $entry is passed through the gform_replace_merge_tags filter. You can fetch any field value from the $entry by its field ID. For example, if your field ID was 1:
$value = $entry[1];
Alternately, if you're open to capturing this modified date as a secondary Date field in your form, we have a snippet that can handle the functionality for you.
https://gravitywiz.com/populate-dates-gravity-form-fields/
new GW_Populate_Date( array(
'form_id' => 1,
'target_field_id' => 2,
'modifier' => '+30 days'
) );

Answer 4

So here is my current working code...
add_action( 'gform_admin_pre_render', 'add_merge_tags' );
function add_merge_tags( $form ) {
?>
<script type="text/javascript">
gform.addFilter('gform_merge_tags', 'add_merge_tags');
function add_merge_tags(mergeTags, elementId, hideAllFields, excludeFieldTypes, isPrepop, option){
mergeTags["custom"].tags.push({ tag: '{the_next_date}', label: 'The Next Date' });
return mergeTags;
}
</script>
<?php
//return the form object from the php hook
return $form;
}
add_action('wp', 'add_merge_tags');
/** MY MERGE TAGS HERE */
add_filter( 'gform_replace_merge_tags', 'new_date', 10, 7 );
function new_date( $value, $merge_tag, $options, $field, $raw_value, $entry, $text, $form, $url_encode, $esc_html, $nl2br, $format ) {
$pmoptions = $entry[7];
if ( $pmoptions == 'Monthly') {
$merge_tag = '{the_next_date}';
$old_date = $entry[2];
$new_date = date('m/d/Y', strtotime( $old_date . '+1 month'));
return str_replace( $merge_tag, $new_date, $text );
}
else if ( $pmoptions == 'Quarterly') {
$merge_tag = '{the_next_date}';
$old_date = $entry[2];
$new_date = date('m/d/Y', strtotime( $old_date . '+3 month'));
return str_replace($merge_tag, $new_date, $text);
}
}
apply_filters( 'gform_replace_merge_tags', $value, $merge_tag, $options, $field, $raw_value, $entry, $text, $form, $url_encode, $esc_html, $nl2br, $format );