Jsf primefaces更新数据表行

我有

p:dataTable

并在使用

两次单击dataTable行时显示

p:dialog

。在该对话框中，我有一个按钮，用于更改选定数据表行单元格的状态。问题是我不知道如何用新值更新该单元格。我想我需要一些primefaces配置，primefaces会自动更新，但因为我对JSF和primefaces非常陌生，所以解决这个问题对我来说是个问题。下面是我的代码

数据表：

<p:dataTable styleClass="myDataGrid" id="tbl2" var="domesticTransactions" value="#{domesticTransferGridManagedBean.domesticTransactions}"
    paginator="true" rows="15" rowKey="#{domesticTransactions.id}" scrollable="true" scrollHeight="280"
    paginatorPosition="bottom"
    paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
    selection="#{domesticTransferGridManagedBean.selectedDomesticTransfer}" selectionMode="single">
    <p:ajax event="rowDblselect" immediate="true" process="@this" oncomplete="PF('tgelPrintForm').show();" update=":form:modalDialog" />

---

您的对话框应该

update

包含所选条目的表

tbl2

：

<p:commandButton actionListener="#{domesticTransferGridManagedBean.addFirstSignerSignToDomesticTransaction}" 
                 id="domesticTransferFirstSignerSign"
                 value="#{msg['label.FirstSignerSignature']}" 
                 styleClass="myButton"
                 process="@this"
                 update="status tbl2"
                 oncomplete="PF('tgelPrintForm').hide()">

---

您只需更新datatable，将datatable id传递给命令按钮中的update参数

<p:commandButton actionListener="#{domesticTransferGridManagedBean.addFirstSignerSignToDomesticTransaction}" 
                                       id="domesticTransferFirstSignerSign"
                                       value="#{msg['label.FirstSignerSignature']}" 
                                       styleClass="myButton"
                                       process="@this"
                                       update="status tbl2"
                                       oncomplete="PF('tgelPrintForm').hide()">
</p:commandButton>

根据表和对话框的位置，您可能需要传递datatable的绝对id：

<p:dataTable styleClass="myDataGrid" id="tbl2" var="domesticTransactions" value="#{domesticTransferGridManagedBean.domesticTransactions}"
    paginator="true" rows="15" rowKey="#{domesticTransactions.id}" scrollable="true" scrollHeight="280"
    paginatorPosition="bottom"
    paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
    selection="#{domesticTransferGridManagedBean.selectedDomesticTransfer}" selectionMode="single">
    <p:ajax event="rowDblselect" immediate="true" process="@this" oncomplete="PF('tgelPrintForm').show();" update=":form:modalDialog" />

update=“status:tbl2”

或

update=“status form:tbl2”

等

<p:commandButton actionListener="#{domesticTransferGridManagedBean.addFirstSignerSignToDomesticTransaction}" 
                                       id="domesticTransferFirstSignerSign"
                                       value="#{msg['label.FirstSignerSignature']}" 
                                       styleClass="myButton"
                                       process="@this"
                                       update="status tbl2"
                                       oncomplete="PF('tgelPrintForm').hide()">
</p:commandButton>