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<?php
/*
* Evaluate class.
*/
/**
* Evaluate class.
*
* Applies filters:
* 'relationship_custom_statement_meta_ajax_validation_filter'
* 'meta_ajax_validation_filter'
*
* @since Types 1.2
* @package Types
* @subpackage Conditional
* @version 0.1
* @category core
* @author srdjan <srdjan@icanlocalize.com>
*/
class WPCF_Evaluate
{
/**
* Main conditinal evaluation function.
*
* @since 1.2
* @version 0.2
* @param type $o
* @return boolean
*/
public static function evaluate( $o ) {
// Set vars
$post = $o->post;
$field = $o->cf;
/*
*
* Since Types 1.2
* We force initial value to be FALSE.
* Better to have restricted than allowed because of sensitive data.
* If conditional is set on field and it goes wrong - better to abort
* so user can report bug without exposing his content.
*/
$passed = false;
if ( empty( $post->ID ) ) {
/*
*
* Keep all forbidden if post is not saved.
*/
$passed = false;
/*
*
*
*
*
*
*
*
*
*
* VIEWS
*
* Custom call uses Views code
* wpv_filter_parse_date()
* wpv_condition()
*/
} else if ( isset( $field['data']['conditional_display']['custom_use'] ) ) {
/*
*
*
* More malformed forbids
*/
if ( empty( $field['data']['conditional_display']['custom'] ) ) {
return false;
}
/*
*
*
* Filter meta values (switch them with $_POST values)
* Used by Views, Types do not need it.
*/
if ( $o->context == 'relationship' ) {
add_filter( 'get_post_metadata',
array('WPCF_Evaluate', 'relationship_custom_statement_meta_ajax_validation_filter'),
10, 4 );
} else {
add_filter( 'get_post_metadata',
array('WPCF_Evaluate', 'meta_ajax_validation_filter'),
10, 4 );
}
do_action( 'types_custom_conditional_statement', $o );
/*
*
* Set statement
*/
$evaluate = trim( stripslashes( $field['data']['conditional_display']['custom'] ) );
// Check dates
$evaluate = wpv_filter_parse_date( $evaluate );
// Add quotes = > < >= <= === <> !==
$strings_count = preg_match_all( '/[=|==|===|<=|<==|<===|>=|>==|>===|\!===|\!==|\!=|<>]\s(?!\$)(\w*)[\)|\$|\W]/',
$evaluate, $matches );
if ( !empty( $matches[1] ) ) {
foreach ( $matches[1] as $temp_match ) {
$temp_replace = is_numeric( $temp_match ) ? $temp_match : '\'' . $temp_match . '\'';
$evaluate = str_replace( ' ' . $temp_match . ')',
' ' . $temp_replace . ')', $evaluate );
}
}
preg_match_all( '/\$([^\s]*)/',
$field['data']['conditional_display']['custom'], $matches );
if ( empty( $matches ) ) {
/*
*
* If statement false
*/
$passed = false;
} else {
/*
*
*
* If statement right, check condition
*/
$fields = array();
foreach ( $matches[1] as $field_name ) {
/*
*
*
* This field value is checked
*/
$f = wpcf_admin_fields_get_field( trim( strval( $field_name ) ) );
if ( empty( $f ) ) {
return false;
}
$c = new WPCF_Field();
$c->set( $post, $f );
// Set field
$fields[$field_name] = $c->slug;
}
$fields['evaluate'] = $evaluate;
$check = wpv_condition( $fields, $post );
/*
*
*
* Views return string malformed,
* boolean if call completed.
*/
if ( !is_bool( $check ) ) {
$passed = false;
} else {
$passed = $check;
}
}
/*
*
*
* Remove filter meta values
*/
if ( $o->context == 'relationship' ) {
remove_filter( 'get_post_metadata',
array('WPCF_Evaluate', 'relationship_custom_statement_meta_ajax_validation_filter'),
10, 4 );
} else {
remove_filter( 'get_post_metadata',
array('WPCF_Evaluate', 'meta_ajax_validation_filter'),
10, 4 );
}
} else {
/*
*
*
*
*
*
*
*
*
* TYPES
*
* If not custom code, use Types built-in check.
* wpcf_cd_admin_compare()
*/
$passed_all = true;
$passed_one = false;
// Basic check
if ( empty( $field['data']['conditional_display']['conditions'] ) ) {
return false;
}
// Keep count to see if OR/AND relation needed
$count = count( $field['data']['conditional_display']['conditions'] );
foreach ( $field['data']['conditional_display']['conditions'] as $condition ) {
/*
*
*
* Malformed condition and should be treated as forbidden
*/
if ( !isset( $condition['field'] ) || !isset( $condition['operation'] )
|| !isset( $condition['value'] ) ) {
$passed_one = false;
continue;
}
/*
*
*
* This field value is checked
*/
$f = wpcf_admin_fields_get_field( trim( strval( $condition['field'] ) ) );
if ( empty( $f ) ) {
return false;
}
$c = new WPCF_Field();
$c->set( $post, $f );
/*
*
* Since Types 1.2
* meta is property of WPCF_Field::$__meta
*
* BREAKPOINT
* This is where values for evaluation are set.
* Please do not allow other places - use hooks.
*
* TODO Monitor this
* 1.3 Change use of $c->_get_meta( 'POST' )
* to $c->get_submitted_data()
*/
// $value = defined( 'DOING_AJAX' ) ? $c->_get_meta( 'POST' ) : $c->__meta;
$value = defined( 'DOING_AJAX' ) ? $c->get_submitted_data() : $c->__meta;
/*
*
* Apply filters
*/
$value = apply_filters( 'wpcf_conditional_display_compare_meta_value',
$value, $c->cf['id'], $condition['operation'], $c->slug,
$post );
$condition['value'] = apply_filters( 'wpcf_conditional_display_compare_condition_value',
$condition['value'], $c->cf['id'],
$condition['operation'], $c->slug, $post );
/*
*
*
* Call built-in Types compare func
*/
WPCF_Loader::loadInclude( 'conditional-display' );
$passed = wpcf_cd_admin_compare( $condition['operation'],
$value, $condition['value'] );
if ( !$passed ) {
$passed_all = false;
} else {
$passed_one = true;
}
}
/*
*
*
* Check OR/AND relation
*/
if ( $count > 1 ) {
if ( $field['data']['conditional_display']['relation'] == 'AND' ) {
$passed = $passed_all;
} else if ( $field['data']['conditional_display']['relation'] == 'OR' ) {
$passed = $passed_one;
}
}
}
return (bool) $passed;
}
/**
* Filters $_POST for relationship.
*
* @global type $wpcf
* @param type $null
* @param type $object_id
* @param type $meta_key
* @param type $single
* @return type
*/
public static function relationship_custom_statement_meta_ajax_validation_filter( $null,
$object_id, $meta_key, $single ){
global $wpcf;
$value = $wpcf->relationship->get_submitted_data(
$wpcf->relationship->parent->ID, $wpcf->relationship->child->ID,
$meta_key );
$null = is_null( $value ) ? $null : $value;
// Date
if ( !empty( $null ) && !empty( $field ) && $field['type'] == 'date' ) {
$time = strtotime( $null );
if ( $time ) {
$null = $time;
}
/**
* be sure do not return string if array is expected!
*/
if ( !$single && !is_array($null) ) {
return array($null);
}
}
return $null;
}
/**
* Filters $_POST values for AJAX call.
*
* @param type $null
* @param type $object_id
* @param type $meta_key
* @param type $single
* @return type
*/
public static function meta_ajax_validation_filter( $null, $object_id,
$meta_key, $single ) {
$meta_key = str_replace( 'wpcf-', '', $meta_key );
$field = wpcf_admin_fields_get_field( $meta_key );
$value = !empty( $field ) && isset( $_POST['wpcf'][$meta_key] ) ? $_POST['wpcf'][$meta_key] : '';
/**
* be sure do not return string if array is expected!
*/
if ( !$single && !is_array($value) ) {
return array($value);
}
return $value;
}
}