65 lines
1.9 KiB
PHP
65 lines
1.9 KiB
PHP
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<?php
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class Enum extends DBField {
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protected $enum, $default;
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/**
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* Create a new Enum field.
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* You should create an enum field like this:
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* "MyField" => "Enum('Val1, Val2, Val3', 'Val1')"
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* or: "MyField" => "Enum(Array('Val1', 'Val2', 'Val3'), 'Val1')"
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* but NOT: "MyField" => "Enum('Val1', 'Val2', 'Val3', 'Val1')"
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* @param enum: A string containing a comma separated list of options or an array of Vals.
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* @param default The default option, which is either NULL or one of the items in the enumeration.
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*/
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function __construct($name, $enum = NULL, $default = NULL) {
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if($enum) {
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if(!is_array($enum)){
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$enum = split(" *, *", trim($enum));
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}
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$this->enum = $enum;
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// If there's a default, then
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if($default) {
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if(in_array($default, $enum)) {
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$this->default = $default;
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} else {
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user_error("Enum::__construct() The default value does not match any item in the enumeration", E_USER_ERROR);
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}
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// By default, set the default value to the first item
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} else {
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$this->default = reset($enum);
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}
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}
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parent::__construct($name);
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}
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function requireField(){
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DB::requireField($this->tableName, $this->name, "enum('" . implode("','", $this->enum) . "') character set utf8 collate utf8_general_ci default '{$this->default}'");
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}
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/**
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* Return a dropdown field suitable for editing this field
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*/
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function formField($title = null, $name = null, $hasEmpty = false, $value = "", $form = null) {
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if(!$title) $title = $this->name;
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if(!$name) $name = $this->name;
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$field = new DropdownField($name, $title, $this->enumValues($hasEmpty), $value, $form);
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return $field;
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}
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/**
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* Return the values of this enum, suitable for insertion into a dropdown field.
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*/
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function enumValues($hasEmpty = false) {
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return ($hasEmpty) ? array_merge(array('' => ''), ArrayLib::valuekey($this->enum)) : ArrayLib::valuekey($this->enum);
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}
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}
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?>
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