java - JSF a4j:commandButton not working when 'disabled' is set -


When I include an 'disabled' attribute on the a4j: commandButton, the action of the button is not taken. Removing the 'inefficient' feature causes it to work properly. I'm not doing any special verification (which I know) and I do not see a verification error message.

Here's a part of my page: 

  & lt; T: DataTable id = "myTable" var = "region" value = "# {MyPageBackingBean.regions}" width = "100%" & gt; ... & lt; A4j: Command button value = "update" action = "# {region.doUpdate}" incomplete = "alert ('done');" Disabled = "# {empty area and area. Message alight}" instant = "true" /> ... & lt; / T: Datatable & gt;

Any ideas? Thanks!

Edit:

I tried to preserve Data Metal = "True" on T: Data not usable.

I did not have any test with an A4J: command button and text box with no data table, but the action of backing bean is still not being removed:

< Pre> & lt; H: form & gt; & Lt; A4j: area & gt; & Lt; A4j: OutputPanel ID = "TerrapRian" & gt; & Lt; H: message id = "message" /> & Lt; A4j: Status & gt; & Lt; F: Aspect Name = "Start" & gt; & Lt; H: graphic image value = "/ images / progress_indicator.gif" /> & Lt; / Ch: Aspect & gt; & Lt; / A4j: Status & gt; & Lt; H: InputTextesta rows = "5" value = "# {MyPaybackBackingBeanMalew}" style = "width: 100%; limit: 1px solid # 99ccff;" & Gt; & Lt; A4j: support event = "onkip" render = "tester" events quinn = "message editing qi" ignoredipspace = "true" request delay = "500" /> & Lt; / H: inputTextarea> & Lt; A4j: Command button object = "doDelete" value = "Delete" action = "# {MyPageBackingBean.dummy}" render = "terrestrihan" disabled = "# {MyPageBackingBean.myValue}" /> & Lt; H: output text value = "# {MyPageBackingBean.myValue}" /> & Lt; / A4j: outputPanel & gt; & Lt; / A4j: area & gt; & Lt; / H: form & gt;

The new backing bean code used for testing is: 

  private string m_myValue = null; Public string millwell val () {return m_myValue; } Public Zero Set Value (string value) {m_myValue = value; } Private string mystr2 = Faucet; Public string dummy () {mystr2 = "hello"; Return tap; }

Thanks!

In the HTML world, any HTML input element due to the disabled attribute Adds name - value attribute ( input , select , textarea and Button ) is not being sent to the server side

In the world of JSF, the name Attribute is used. However, JSF also checks that the component's disabled (and rendered ) attribtue true attribute Evaluates before # {MyPageBackingBean.regions} whose isMessageEmpty ()

# {region} Here is a running table row object code> Better Default Returns by true . Submit the # {MyPageBackingBean.regions} to the new request of the form, which is apparently empty which makes the button disabled . JSF will not then call related operations.

At this point, you need to make sure that # {MyPageBackingBean.regions} comes back to the exact same data module in the subsequent request. In order to make the easiest to set, the MyPageBackingBean bean is in the area of ​​the session so that it can not be resumed in the subsequent request, but there may be more negative side effects along with it. The second fix is ​​to reorganize the modell loading so that it is in Bean Constructor. As you already have from Tomahawk's & lt; T: dataTable & gt; , you have to preserve the true in the true for more signals about the use of the datatables, Can also find useful.


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