I have an input text and a button on the form. I process event onchange for input text and onclick for button. If the user changes the text and then click the button 2 events fired and sometimes they are processed simultaneously.I would like onclick to be processed after onchange completed. For this I use <a4j:queue name="myQueue"/> and mark events with <a4j:queue name="myQueue"/> like this:
<a4j:queue name="myQueue"/>
...
<h:inputText id="dateFromText" value="#{flowScope.fileSearchCriteria.fromDateStr}">
<a4j:support event="onchange" eventsQueue="myQueue" reRender="datePanel1"
actionListener="#{fileSearchCriteria.changeTextFromDate}"/>
</h:inputText>
....
<h:commandButton id="fileInSearch" action="fileInSearch"
value="#{resourceBundle.searchIn}" type="submit">
<a4j:support eventsQueue="myQueue" event="onclick"/>
</h:commandButton>
...
And as a result, onclick is processed not every time after onchange.
You should have two events each time, onchange and onclick. But, I'd recommend to switch to a4j:commadnButton instead of using h:commandButton with a4j:support inside.
Related
Using JSF and PrimeFaces 6.1 I have an inputText field as such:
<p:inputText value="#{backingBean.stringField}">
<p:ajax event="valueChange" update="#form" />
</p:inputText>
and within the same form is a commandButton:
<p:commandButton id="btnDoThatThing"
ajax="true"
immediate="true"
update="#form"
process="#this"
action="#{backingBean.doThatThing}"/>
When I
make a change to the inputText field,
then click somewhere OTHER THAN the command button
click the command button
everything works exactly as expected. BUT if I:
make a change to the inputText field,
immediately the command button
The button is NOT fired since the first click of the commandButton is triggering the valueChange event to happen in the inputText field.
If I click it a second time the button action finally happens.
Now, if i change the p:ajax event="valueChange" to p:ajax event="keyup" the first click of the commandButton work as expected, but unfortunately the keyup event on a inputField is pretty hacky and you lose functionality within the field (copy/paste text, text selection, 'fast' typing' etc)
Any thoughts on how to initiate the change event in the inputText field, AND fire the commandButton action when the user clicks the button immediately from typing in the inputText field?
First your valueChange is triggered. This updates the form including the button. Not 100% sure if this is browser dependent, but in Chromium (Linux), the click on the previously rendered button (before it has been updated) is not executed.
I could get it working when I changed the update expression into a selector. My expression updates the elements I needed to be updated excluding the button(s). In my case:
<p:ajax update="#(form :input:not(button))" />
Note that the change event is default for inputs, so I've removed event="valueChange".
Of course you do not need to use a selector. You can also just update a component (like a panel) which does not contain the button:
<p:ajax update="yourPanel" />
Also, ajax="true" is default for a p:commandButton, so you can remove that.
In my case, I solved the same problem removing the following statement from my page (Primefaces 11.0):
<p:ajaxStatus onstart="PF('statusDialog').show()" onsuccess="PF('statusDialog').hide()"/>
Somehow the onstart event overrides the click event and only one event is processed: change.
I have a PF's input text with ajax blur event and a command button that executes some action. If I enter some text in inputText and click on a commandButton, an ajax blur listener is executed, not a commandButton action, which is pretty much expected.
Example code:
<p:inputText id="inTest" value="#{bean.input}" >
<p:ajax event="blur" listener="#{bean.doOnBlur}" />
</p:inputText>
<p:commandButton id="btnTest" action="#{bean.doBtnClick}" />
Is there any way to execute both methods sequentially (first doOnBlur and then doBtnClick) and how do I achieve that?
Using PF 5.3 (also tried with 6.0), MyFaces 2.0.17, runnino on WebSphere Portal 7 (it's a portlet).
I've created a textField with JSF and want it to update a table myTable when the user inserts a String.
I've tried this
<h:inputText id="searchHeader" value="#{myBean.searchStringFirstname}"
valueChangeListener="#{myBean.searchByFirstnameValueChanged}" >
<f:ajax render="myTable"/>
</h:inputText>
and this
<h:inputText id="searchHeader" value="#{myBean.searchStringFirstname}">
<f:ajax listener="#{myList.searchByFirstname}" event="valueChange"
execute="myTableForm" render="myTable" />
</h:inputText>
I want the event to fire every time the value of the InputField gets changed, but in both cases the eventListener method specified by valueChangeListener only gets called when the user hits the enter key.
Why is that?
I've tried this solution JSF2 search box but I could not make it work.
I try to get experiment with ajax. I want that string from inputText typing to outpuLabel.
<h:form>
<h:inputText id="str" value="#{f.str}">
<f:ajax render="num"/>
</h:inputText>
<h:outputLabel id="num" value="#{f.str}">
</h:outputLabel>
</h:form>
But the value of num update only when i'm typed and clicked the mouse, not during typing to str. How do that the num will be updating during the typing?
The <f:ajax event> defaults in case of UIInput components to valueChange which renders in case of <h:inputText> the ajax call in the onchange attribute of the generated <input type="text"> element (you can see it yourself by opening the JSF page in webbrowser and do rightclick and View Source).
So, the ajax request is only fired when the HTML DOM change event is fired. That is, when you change the value of the input element and then the input element loses focus (blurs).
As per your functional requirement, you actually want the ajax request to be fired when the HTML DOM keyup event is fired. In that case, you'd need to explicitly specify that.
<f:ajax event="keyup" ... />
See also:
What values can I pass to the event attribute of the f:ajax tag?
I have a problem with a JSF 2 form that contains an ajax field. When I use the mouse to press the submit button of the form while the cursor is still in the ajaxified input field the input value of the field does not get submitted before the action is triggered in the backing bean. Also the attached validator and converter are not triggered.
<h:form id="invoice">
...
<h:inputText value="#{invoiceBean.amount}" required="true" validator="#{invoiceBean.validateAmount}">
<f:converter converterId="CurrencyConverter" />
<f:ajax event="blur" render="#this"/>
</h:inputText>
<h:commandButton action="#{invoiceBean.processInvoice()}" />
</h:form>
I also tried to enhance the command button with <f:ajax /> but the result stayed the same. Other (non-ajax) fields on the same form (not shown in the code snippet above) are submitted correctly. The ajax field is also submitted, converted and validated if I click somwhere else on the page before submitting but not when using the button directly.
Is there anything I am missing to have the field also be submitted on/before form submit?
Regarding the <h:inputText> ajax behaviour: use <f:ajax> with the default event valueChange, which is the default event for all input components. This is indeed equivalent to omitting the event attribute:
<f:ajax render="#this" />
Regarding the <h:commmandButton> component, don't forget to specify the execute attribute of <f:ajax>:
<f:ajax execute="#form" />
otherwise it will default to #this, therefore rendering vane your effort.