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PHP field::cast_data方法代码示例

本文整理汇总了PHP中field::cast_data方法的典型用法代码示例。如果您正苦于以下问题:PHP field::cast_data方法的具体用法?PHP field::cast_data怎么用?PHP field::cast_data使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在field的用法示例。


在下文中一共展示了field::cast_data方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: set_for_context_and_field

 /**
  * Sets the custom field data for a specified context and field.
  *
  * @param object $context the context to set the data for
  * @param field $field the field object to set the data for
  * @param mixed $data a single value or an array depending on whether
  *        $field is multivalued or not
  * @param string $plugin
  * @return boolean whether or not the data was modified
  */
 public static function set_for_context_and_field($context, field $field, $data)
 {
     global $DB;
     $data = $field->cast_data($data);
     // ELIS-3829
     if ($context) {
         $contextid = $context->id;
     } else {
         $contextid = null;
     }
     $data_table = $field->data_table();
     // FIXME: check exclude, unique, etc
     if ($field->multivalued) {
         if (!is_array($data)) {
             $data = array($data);
         }
         // find what data already exists (excluding default value if we have a context, including if we don't)
         $include_default = is_null($contextid) ? true : false;
         $records = self::get_for_context_and_field($context, $field, $include_default);
         $records = $records ? $records : array();
         $todelete = array();
         $existing = array();
         foreach ($records as $rec) {
             $val = $field->cast_to_type($rec->data);
             if (in_array($val, $data)) {
                 $existing[] = $val;
             } else {
                 $todelete[] = $rec;
             }
         }
         // delete obsolete data
         foreach ($todelete as $rec) {
             $rec->delete();
         }
         // add new data
         $toadd = array_diff($data, $existing);
         foreach ($toadd as $value) {
             $fielddatatype = "field_data_{$field->data_type()}";
             $rec = new $fielddatatype();
             $rec->contextid = $contextid;
             $rec->fieldid = $field->id;
             $rec->data = $value;
             $rec->save();
         }
         return !empty($toadd) || !empty($todelete);
     } else {
         if ($rec = $DB->get_record($data_table, array('contextid' => $contextid, 'fieldid' => $field->id))) {
             //                $fielddata = new field_data($rec, $field->data_type());
             $fielddatatype = "field_data_{$field->data_type()}";
             $fielddata = new $fielddatatype($rec);
             if ($data === null) {
                 $fielddata->delete();
                 return true;
             }
             if ($fielddata->data == $data) {
                 return false;
             }
             $fielddata->contextid = $contextid;
             // needed, or else NULL becomes 0
             $fielddata->data = $data;
             $fielddata->save();
             return true;
         } else {
             if ($data !== null) {
                 $fielddatatype = "field_data_{$field->data_type()}";
                 $rec = new $fielddatatype();
                 $rec->contextid = $contextid;
                 $rec->fieldid = $field->id;
                 $rec->data = $data;
                 $rec->save();
                 return true;
             }
         }
     }
 }
开发者ID:jamesmcq,项目名称:elis,代码行数:85,代码来源:customfield.class.php


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