Add hasValue(), hasTitle() and hasID() methods to SelectableOptionArray class

wire/modules/Fieldtype/FieldtypeOptions/SelectableOptionArray.php

@@ -197,4 +197,56 @@ class SelectableOptionArray extends WireArray {
 		return $isIdentical;
 	}
 
+	/**
+	 * Get SelectableOption by $property matching $value, or boolean false if not found
+	 * 
+	 * @param string $property May be "title", "value" or "id"
+	 * @param string|int $value
+	 * @return bool|SelectableOption
+	 * 
+	 */
+	protected function getOptionByProperty($property, $value) {
+		$match = false;
+		foreach($this as $option) {
+			$v = $option->getProperty($property);
+			if($v !== $value) continue;
+			$match = $option;
+			break;
+		}
+		return $match;
+	}
+
+	/**
+	 * Is the given value present in these selectable options? 
+	 * 
+	 * @param string $value
+	 * @return SelectableOption|bool Returns SelectableOption if found, or boolean false if not
+	 * 
+	 */
+	public function hasValue($value) {
+		return $this->getOptionByProperty('value', $value);
+	}
+
+	/**
+	 * Is the given title present in these selectable options?
+	 * 
+	 * @param string $title
+	 * @return SelectableOption|bool Returns SelectableOption if found, or boolean false if not
+	 * 
+	 */
+	public function hasTitle($title) {
+		return $this->getOptionByProperty('title', $title); 
+	}
+
+	/**
+	 * Is the given id present in these selectable options?
+	 *
+	 * @param int $id
+	 * @return SelectableOption|bool Returns SelectableOption if found, or boolean false if not
+	 *
+	 */
+	public function hasID($id) {
+		return $this->getOptionByProperty('id', (int) $id);
+	}
+
 }