Question

当我尝试在Play 2.4中提交表单时，我收到错误＆＃34;无效值＆＃34;。这是我的代码：形式：

@helper.select(
    field = form("category"),
    options = categories.map {c =>
        c.name.toString -> c.name
    },
    '_default -> "Choose One"
)

表单提交的模型（与类别一对一）：

@OneToOne
@Constraints.Required
@Column
public Category category;

类别模型：

@Entity
public class Category extends Model {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(nullable = false)
    public Long id;

    @Constraints.Required
    @Formats.NonEmpty
    @Column(nullable = false)
    public String name;

    @Constraints.Required
    @Formats.NonEmpty
    @Column(nullable = false)
    public String description;

    public Category(String name, String description) {
        this.name = name;
        this.description = description;
    }

    public static Finder<String, Category> find = new Finder<String,   Category>(Category.class);

    public static List<Category> getCategories() {
        return find.all();
    }
}

表单会加载类别的ID和名称，就在我提交时，会发生错误。我想这可能是因为Play在搜索OneToOne关系时没有获得带有id的类别？

Play Framework - ＆＃34;无效的价值＆＃34;使用helpers.select时

0 个答案: