我是一个有用的助手,可以翻译文本。
在Grails中使用枚举类型时遇到了问题:
我尝试在Grails领域对象中使用枚举类型。
代码如下:
在Grails中使用枚举类型时遇到了问题:
我尝试在Grails领域对象中使用枚举类型。
代码如下:
package it.xxx.tools.kanban
import java.util.Date;
class Task {
String name
String description
Priority priority
static belongsTo = [user:User, project:Project]
static constraints = {
name(nullable:false, maxSize:25)
description(nullable:false, maxSize:1500)
priority(nullable:true)
}
}
package it.xxx.tools.kanban;
public enum Priority {
VERY_LOW("Very Low"),
LOW("Low"),
MEDIUM("Medium"),
HIGH("High"),
VERY_HIGH("Very High")
private final String value
Priority(String value){
this.value = value;
}
String toString() {
value
}
String getKey() {
name()
}
static list(){
[VERY_LOW, LOW, MEDIUM, HIGH, VERY_HIGH]
}
}
<tr class="prop">
<td valign="top" class="name">
<label for="priority">Priority:</label>
</td>
<td valign="top" class="value ${hasErrors(bean:taskInstance,field:'priority','errors')}">
<g:select from="${it.weservice.tools.kanban.Priority?.values()}" value="${taskInstance?.priority}" name="priority" noSelection="['':'']"></g:select>
</td>
</tr>
我使用Grails的generate-all命令。
当我通过Web应用程序尝试保存Task对象时,出现以下错误:
Failed to convert property value of type [java.lang.String] to required type [it.weservice.tools.kanban.Priority] for property priority; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [java.lang.String] to required type [it.weservice.tools.kanban.Priority] for property priority: no matching editors or conversion strategy found