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编辑当前文件:/var/www/cognitio.in/wp-content/plugins/contact-form-7/modules/date.php

<?php
/**
** A base module for the following types of tags:
** 	[date] and [date*]		# Date
**/

/* form_tag handler */

add_action( 'wpcf7_init', 'wpcf7_add_form_tag_date', 10, 0 );

function wpcf7_add_form_tag_date() {
	wpcf7_add_form_tag( array( 'date', 'date*' ),
		'wpcf7_date_form_tag_handler',
		array(
			'name-attr' => true,
		)
	);
}

function wpcf7_date_form_tag_handler( $tag ) {
	if ( empty( $tag->name ) ) {
		return '';
	}

$validation_error = wpcf7_get_validation_error( $tag->name );

$class = wpcf7_form_controls_class( $tag->type );

$class .= ' wpcf7-validates-as-date';

if ( $validation_error ) {
		$class .= ' wpcf7-not-valid';
	}

$atts = array();

$atts['class'] = $tag->get_class_option( $class );
	$atts['id'] = $tag->get_id_option();
	$atts['tabindex'] = $tag->get_option( 'tabindex', 'signed_int', true );
	$atts['min'] = $tag->get_date_option( 'min' );
	$atts['max'] = $tag->get_date_option( 'max' );
	$atts['step'] = $tag->get_option( 'step', 'int', true );
	$atts['readonly'] = $tag->has_option( 'readonly' );

$atts['autocomplete'] = $tag->get_option(
		'autocomplete', '[-0-9a-zA-Z]+', true
	);

if ( $tag->is_required() ) {
		$atts['aria-required'] = 'true';
	}

if ( $validation_error ) {
		$atts['aria-invalid'] = 'true';
		$atts['aria-describedby'] = wpcf7_get_validation_error_reference(
			$tag->name
		);
	} else {
		$atts['aria-invalid'] = 'false';
	}

$value = (string) reset( $tag->values );

if ( $tag->has_option( 'placeholder' )
	or $tag->has_option( 'watermark' ) ) {
		$atts['placeholder'] = $value;
		$value = '';
	}

$value = $tag->get_default_option( $value );

if ( $value ) {
		$datetime_obj = date_create_immutable(
			preg_replace( '/[_]+/', ' ', $value ),
			wp_timezone()
		);

if ( $datetime_obj ) {
			$value = $datetime_obj->format( 'Y-m-d' );
		}
	}

$value = wpcf7_get_hangover( $tag->name, $value );

$atts['value'] = $value;
	$atts['type'] = $tag->basetype;
	$atts['name'] = $tag->name;

$html = sprintf(
		'<span class="wpcf7-form-control-wrap" data-name="%1$s"><input %2$s />%3$s</span>',
		esc_attr( $tag->name ),
		wpcf7_format_atts( $atts ),
		$validation_error
	);

return $html;
}

add_action(
	'wpcf7_swv_create_schema',
	'wpcf7_swv_add_date_rules',
	10, 2
);

function wpcf7_swv_add_date_rules( $schema, $contact_form ) {
	$tags = $contact_form->scan_form_tags( array(
		'basetype' => array( 'date' ),
	) );

foreach ( $tags as $tag ) {
		if ( $tag->is_required() ) {
			$schema->add_rule(
				wpcf7_swv_create_rule( 'required', array(
					'field' => $tag->name,
					'error' => wpcf7_get_message( 'invalid_required' ),
				) )
			);
		}

$schema->add_rule(
			wpcf7_swv_create_rule( 'date', array(
				'field' => $tag->name,
				'error' => wpcf7_get_message( 'invalid_date' ),
			) )
		);

$min = $tag->get_date_option( 'min' );
		$max = $tag->get_date_option( 'max' );

if ( false !== $min ) {
			$schema->add_rule(
				wpcf7_swv_create_rule( 'mindate', array(
					'field' => $tag->name,
					'threshold' => $min,
					'error' => wpcf7_get_message( 'date_too_early' ),
				) )
			);
		}

if ( false !== $max ) {
			$schema->add_rule(
				wpcf7_swv_create_rule( 'maxdate', array(
					'field' => $tag->name,
					'threshold' => $max,
					'error' => wpcf7_get_message( 'date_too_late' ),
				) )
			);
		}
	}
}

/* Messages */

add_filter( 'wpcf7_messages', 'wpcf7_date_messages', 10, 1 );

function wpcf7_date_messages( $messages ) {
	return array_merge( $messages, array(
		'invalid_date' => array(
			'description' => __( "Date format that the sender entered is invalid", 'contact-form-7' ),
			'default' => __( "Please enter a date in YYYY-MM-DD format.", 'contact-form-7' ),
		),

'date_too_early' => array(
			'description' => __( "Date is earlier than minimum limit", 'contact-form-7' ),
			'default' => __( "This field has a too early date.", 'contact-form-7' ),
		),

'date_too_late' => array(
			'description' => __( "Date is later than maximum limit", 'contact-form-7' ),
			'default' => __( "This field has a too late date.", 'contact-form-7' ),
		),
	) );
}

/* Tag generator */

add_action( 'wpcf7_admin_init', 'wpcf7_add_tag_generator_date', 19, 0 );

function wpcf7_add_tag_generator_date() {
	$tag_generator = WPCF7_TagGenerator::get_instance();
	$tag_generator->add( 'date', __( 'date', 'contact-form-7' ),
		'wpcf7_tag_generator_date' );
}

function wpcf7_tag_generator_date( $contact_form, $args = '' ) {
	$args = wp_parse_args( $args, array() );
	$type = 'date';

$description = __( "Generate a form-tag for a date input field. For more details, see %s.", 'contact-form-7' );

$desc_link = wpcf7_link( __( 'https://contactform7.com/date-field/', 'contact-form-7' ), __( 'Date field', 'contact-form-7' ) );

?>
<div class="control-box">
<fieldset>
<legend><?php echo sprintf( esc_html( $description ), $desc_link ); ?></legend>

<div class="insert-box">
	<input type="text" name="<?php echo $type; ?>" class="tag code" readonly="readonly" onfocus="this.select()" />

<p class="description mail-tag"><label for="<?php echo esc_attr( $args['content'] . '-mailtag' ); ?>"><?php echo sprintf( esc_html( __( "To use the value input through this field in a mail field, you need to insert the corresponding mail-tag (%s) into the field on the Mail tab.", 'contact-form-7' ) ), '<strong><span class="mail-tag"></span></strong>' ); ?><input type="text" class="mail-tag code hidden" readonly="readonly" id="<?php echo esc_attr( $args['content'] . '-mailtag' ); ?>" /></label></p>
</div>
<?php
}