Question

我的课程主要由String和一些Double组成，我有一个BeanEditor。

但是，我希望在此类中添加另一个字段，该字段的类型是我的自定义类，我们称之为Bar。

public class Foo {
    private String myString;
    private Double myDouble;
    private Bar bar;

    // getters and setters
    ...
}

该字段的允许值从数据库中提取，并应显示为选择控件。

但是，当我尝试在我的页面中执行此操作时，就像myBar类中不存在Foo一样。

<beaneditor>
    <p:bar>
        <div class="t-beaneditor-row">
            <label>Bar</label>
            <t:select t:id="barSelecter" t:model="barModel" t:value="foo.bar" t:encoder="barEncoder"/>
        </div>
    </p:bar>
</beaneditor>

如何达到预期效果？

Answer 1

您必须将bar属性添加到模型中。

例如<beaneditor add="bar"... >

Answer 2

您可以为类型class A{ static void greet(String name){ println "hello $name!" } } //code without class declaration will be executed as part of script.run() method A.greet("world")编写自己的'BeanEditor'块。

就像我为TourOperator所做的那样： NamedDTOSelectTourOperatorBlocks.tml：

Bar

NamedDTOSelectTourOperatorBlocks.java：

<t:container xmlns:t="http://tapestry.apache.org/schema/tapestry_5_4.xsd" xmlns:p="tapestry:parameter">
     <t:block id="editSelectBar">

            <t:label for="tourOperatorEdit" />
              <t:select 
              value="prop:NamedDTOSelectTourOperatorEditContext.id" 
              t:model="tourOperatorIdsModel" t:validate="required" 
              t:id="tourOperatorEdit" t:blankOption="ALWAYS" 
              t:blankLabel="message:select.blank.label" 
              validate="required" />
        </t:block>
</t:container>

不要忘记在public class NamedDTOSelectTourOperatorBlocks { @Property @Environmental private PropertyOutputContext outputContext; @Property @Environmental private PropertyEditContext editContext; @Inject private ComponentResources resources; @Inject private TourOperatorManager tourOperatorManager; @Inject private SelectIdModelFactoryNamedDTO selectIdModelFactoryNamedDTO; private SelectModel tourOperatorIdsModel; void onPrepareForRender() { tourOperatorIdsModel = selectIdModelFactoryNamedDTO.create(tourOperatorManager.getAllNamedDTO());// Read the values from my DB } public SelectModel getTourOperatorIdsModel() { if (null == tourOperatorIdsModel) { // REMARK: I have no idea why but loading it in setupRender or onPrepareForRender seams to be too late. tourOperatorIdsModel = selectIdModelFactoryNamedDTO.create(tourOperatorManager.getAllNamedDTO()); } return tourOperatorIdsModel; } public NamedDTOSelectTourOperator getNamedDTOSelectTourOperatorEditContext() { return (NamedDTOSelectTourOperator) editContext.getPropertyValue(); } public NamedDTOSelectTourOperator getNamedDTOSelectTourOperatorOutputContext() { return (NamedDTOSelectTourOperator) outputContext.getPropertyValue(); } }注册新定义的块：

AdminModule.java

在Tapestry的BeanEditor中使用自定义类

2 个答案: