Question

我正在制作Play 2.2表单应用程序。我使用这个函数创建一个表单

public static Result editIndicator() {
        Indicators addIndObj = new Indicators();
        addIndObj.aDt = (new Date()).toString();
        addIndObj.aUid = Long.parseLong(play.mvc.Controller.session("userid"));
        addIndObj.dTag = "N";

        // List of all Countries
        ALLCommon table_listobj = Indicators.ddl1();

        Form<Indicators> newIndicatorForm = form(Indicators.class).fill(
                addIndObj);

        return (ok(addindicator.render(newIndicatorForm, table_listobj)));

    }

指标模型的参数约束为@Required，参数如下

@Constraints.Required
@Column(name = "A_DT")
    public String aDt;
@Constraints.Required
    @Column(name = "A_UID")
    public Long aUid;
@Constraints.Required
    @Column(name = "D_TAG")
    public String dTag;
@Column(name = "TIME")
    @Required
    @Formats.DateTime(pattern = "HH:mm:ss")
    public Date time;
@Constraints.Required
    @Column(name = "INDFREQUENCY")
    public String indFrequency;

因此，我先设置值，然后将其绑定到表单。我不会在我的表单中使用所有这些@Required值（只是频率部分），当我尝试获取填充表单时，我会遇到表单错误

Form(of=class models.Indicators, 
data={}, value=None,
errors={time=[ValidationError(time,error.required,[])], 
aDt=[ValidationError(aDt,error.required,[])], 
dTag=[ValidationError(dTag,error.required,[])], 
aUid=[ValidationError(aUid,error.required,[])], 
indFrequency=[ValidationError(indFrequency,error.required,[])]})

即使我不使用它，我是否需要在表单中设置这些值？或者我错过了什么.. 任何帮助都是适当的..提前感谢.. :)）

Answer 1

找到答案..

1）您必须使用模型所需的所有参数，例如@Required，如果您不必在表单中使用它。只需将其放在<div display:none>标记中即可。

2）在提交按钮上，我们调用@forms(routes.Application.index)但是，括号应该封装您的完整代码，而不仅仅是submit按钮。因此，最佳做法是@forms(routes.Application.index){ your complete code here}。

Answer 2

如果您不需要一直验证所有字段，则可以使用组。

例如：

// interfaces to create groups
public interface Step1 {}
public interface Step2 {}

因此您需要将这些组添加到您的字段中：

@Required(groups = {Step1.class})
@Column(name = "A_DT")
public String aDt;

@Required(groups = {Step1.class})
@Column(name = "A_UID")
public Long aUid;

@Required(groups = {Step1.class})
@Column(name = "D_TAG")
public String dTag;

@Column(name = "TIME")
@Required(groups = {Step2.class})
@Formats.DateTime(pattern = "HH:mm:ss")
public Date time;

@Required(groups = {Step2.class})
@Column(name = "INDFREQUENCY")
public String indFrequency;

然后：

// this only validates the fields that have Step1 group (aDt, aUid, dTag in this example)
Form<Indicators> newIndicatorForm = form(Indicators.class, Step1.class)
        .fill(addIndObj);

// this only validates the fields that have Step2 group (time, indFrequency in this example)
Form<Indicators> newIndicatorForm = form(Indicators.class, Step2.class)
        .fill(addIndObj);

// this validates the fields of both groups (all the fields in this example)
Form<Indicators> newIndicatorForm = form(Indicators.class, Step1.class, Step2.class)
        .fill(addIndObj);

Playframework：处理表单提交

2 个答案: