I have the following markup:
<rich:panel id="selectorPanel">
<h:inputText value="#{myBean.field1}" />
<h:inputText value="#{myBean.field2}" />
<h:inputText value="#{myBean.field3}" />
<!-- and so forth -->
<h:selectOneMenu id="selector" value="#{myBean.selected}">
<a4j:ajax event="change" listener="#{myBean.doUpdateValues()}" render="selectorPanel" />
<f:selectItem itemLabel="#{msgs['bundle.addFilter']}" itemValue="#{null}" value="#{null}"/>
<f:selectItems value="#{myBean.filters}" />
</h:selectOneMenu>
</rich:panel>
The problem: when I change the value of the selectOneMenu the selectorPanel is being rerendered, therefore the values of the inputTexts are being refreshed and set to the myBean's properties value.
But I need to set values entered by user on the web-page to the corresponding bean's properties before rerendering.
Is it possible? How?
Why to do need to execute all? the #form should be enough or even list of inputs ids.
I've found the solution just now and we can actually use execute attribute as follows:
execute="#all"
It works for me.
Related
Here is what I am trying to do:
I have a form with multiple pairs of input fields and a save button.
When the save button is pressed then for each pair of input fields should be validated if they are numbers and if the left value is smaller than the right value.
If not the validation errors will be shown and if it is the case a dialog will pop up to ask for the name under which it should be saved.
Here is what I got so far:
<h:form>
<ui:repeat value="#{myBean.someList}" var="elem">
<h:inputText id="min#{elem.id}" value="#{elem.minimum}" />
<h:inputText id="max#{elem.id}" value="#{elem.maximum}" />
<br />
<h:message for="min#{elem.id}" style="color:red" />
<h:message for="max#{elem.id}" style="color:red" />
</ui:repeat>
<h:commandButton value="save">
<f:ajax execute="#form" render="#form updateValidationFailedFlag"
onevent="
function(ajaxResult){
if(ajaxResult.status=='success' && !globalValidationFailedFlag)
showSaveDialog();
}"
/>
</h:commandButton>
<h:outputScript id="updateValidationFailedFlag">
globalValidationFailedFlag = #{facesContext.validationFailed};
</h:outputScript>
</h:form>
This works but doesn't check if the minimum is smaller then the maximum.
It will validate the input (checks if the input are integer) and shows the save dialog if no validation error occured.
To check if the minimum is smaller then the maximum I tried to follow the tutorial at http://www.mkyong.com/jsf2/multi-components-validator-in-jsf-2-0/
Variant 1 adds a listener after the validation is done and is able to add error messages that are shown in the browser. But that doesn't count as a validation failure and doen't set the facesContext.validationFailed flag.
Variant 2 writes a custom validator for one component and gives the other component as parameter to that validator. That would look something like this:
<f:validator validatorId="myValidator" />
<f:attribute name="maximum" value="#{max#{elem.id}}" />
That is not really valid EL and I don't know how to write it correctly.
What can I do to validate if each of those min-max pairs is valid
You don't need #{elem.id} here. The <ui:repeat> already takes care of that. It would be evaluated to an empty string anyway when JSF needs to set the id attribute.
<ui:repeat value="#{myBean.someList}" var="elem">
<h:inputText id="min" value="#{elem.minimum}" />
<h:inputText id="max" value="#{elem.maximum}" />
<br />
<h:message for="min" style="color:red" />
<h:message for="max" style="color:red" />
</ui:repeat>
As to the validation, just pass the value of the other component along:
<h:inputText id="min" binding="#{min}" value="#{elem.minimum}" />
<h:inputText id="max" value="#{elem.maximum}">
<f:validator validatorId="myValidator" />
<f:attribute name="min" value="#{min.value}" />
</h:inputText>
Note that I moved the validator to the second component. Otherwise it would be still invoked if the second component didn't pass conversion.
If you happen to use JSF utility library OmniFaces, then you could use its <o:validateOrder> instead.
<h:inputText id="min" value="#{elem.minimum}" />
<h:inputText id="max" value="#{elem.maximum}" />
<o:validateOrder components="min max" showMessageFor="min" />
See also:
How to use EL with <ui:repeat var> in id attribute of a JSF component
JSF doesn't support cross-field validation, is there a workaround?
I'm using an p:selectOneRadio with p:ajax and the value of another component (p:inputText), not binding its value in my bean.
If I use p:selectBooleanCheckbox instead the behavior is exactly what I need, update the bean before calling the method in ajax. Is this a bug in p:selectOneRadio or is this its default behavior?
I'm using JSF2, PrimeFaces 4
The xhtml code:
<p:selectOneRadio id="enumId" value="#{xyzController.entity.enumValor}"
disabled="#{disabled}" required="true" plain="true">
<f:selectItems value="#{xyzController.enum}" var="item"
itemLabel="#{messages[ELUtils.evaluateExpression(itemLabelEL)]}"
itemValue="#{item}" />
<p:ajax event="change" listener="#{xyzController.aoTrocar}"
update="panelDominioFields" process="#form" />
</p:selectOneRadio>
<p:outputPanel layout="inline" id="panelDominioFields">
<p:inputText id="valorId"
value="#{xyzController.entity.valorNumericoValido}"
rendered="#{xyzController.mostrarCampoDominioNumerico}"
required="true">
<f:convertNumber type="number" locale="#{localeController.locale}"
currencyCode="#{localeController.currencyCode}" />
</p:inputText>
</p:outputPanel>
Get rid of event="change", it's the wrong event. It defaults to click and is the right one already.
<p:ajax listener="#{xyzController.aoTrocar}"
update="panelDominioFields" process="#form" />
Radio button values never change. They're only selected by click. In turn, selected values are submitted, but unselected values not.
We have build a component that consists of a TextInput and Select Box. So that the selection can be made either via the drop down list or by typing in the value into the text field. When a selection is made the Input Box is automatically filled with the key and if the key is entered the correct item in the selection box is displayed.
<h:panelGroup rendered="#{cc.attrs.rendered}">
<div id="#{cc.clientId}" class="abc-select #{cc.attrs.styleClass}" >
<h:inputText id="input" disabled="#{cc.attrs.disabled}"
value="#{cc.attrs.value}">
<a4j:ajax event="change" render="select" />
</h:inputText>
<rich:select disabled="#{cc.attrs.disabled}"
id="select" value="#{cc.attrs.value}"
listWidth="#{cc.attrs.listWidth}"
converter="#{cc.attrs.converter}">
<f:selectItems value="#{cc.attrs.items}" var="item"
itemValue="#{item}" itemLabel="#{item.name}" />
<a4j:ajax event="selectitem" render="input" oncomplete="setFocusOnInputField();" />
</rich:select>
</div>
</h:panelGroup>
However when we pass in an <a4j:ajax event="change" ... /> with an onChange event to render a component external element. It only works when the selection is made via the drop down menu.
<abc:myComponent id="idMC"
value="#{bean.value}"
items="#{bean.itemList}"
converter="#{itemConverter}">
<a4j:ajax event="change" render="idA idB idC" />
</kfn:select>
So far I figured out that it must have to do with the fact that the inputText already has an a4j element listing for change <a4j:ajax event="change" render="select" />.
When I change the ajax element in the inputText element to use <f:ajax .. /> instead it works fine.
Can someone explain why this is the case and is there a better solution?
I have this code which is used to select how many rows to display in jsf table:
<!-- Set rows per page -->
<h:outputLabel for="rowsPerPage" value="Rows per page" />
<h:inputText id="rowsPerPage" value="#{AccountsController.rowsPerPage}" size="3" maxlength="3" />
<h:commandButton styleClass="bimage" value="Set" action="#{AccountsController.pageFirst}" >
<f:ajax render="#form" execute="#form"></f:ajax>
</h:commandButton>
<h:message for="rowsPerPage" errorStyle="color: red;" />
I want to edit the code this way: I want to replace the code with h:selectOneManu and option to insert custom value with AJAX support:
<h:selectOneMenu id="setrows" value="#{AccountsController.rowsPerPage}" converter="javax.faces.Integer" maxlength="3">
<f:selectItem itemValue="10" itemLabel="10" />
<f:selectItem itemValue="50" itemLabel="50" />
<f:selectItem itemValue="100" itemLabel="100" />
<f:selectItem itemValue="500" itemLabel="500" />
<f:selectItem itemValue="332" itemLabel="Custom" />
<f:ajax render="customrowperpage" />
</h:selectOneMenu>
<h:inputText id="customrowperpage" value="#{AccountsController.rowsPerPage}" rendered="#{AccountsController.rowsPerPage == '332'}" required="true" />
But for some reason the code is not working. Can you help me to find the problem. Also I want to update AJAX functionality when I select number from the h:selectOneMenu list AJAX call to update the form.
There are 2 problems.
First, as JavaScript runs in the client side, you can't ajax-update a JSF component which isn't rendered to the client side. There's then simply nothing in the HTML DOM tree which JavaScript can select, manipulate and replace. You should instead ajax-update a JSF component which is always rendered to the client side.
<h:panelGroup id="customrowperpage">
<h:inputText value="#{AccountsController.rowsPerPage}" required="true"
rendered="#{AccountsController.rowsPerPage == '332'}" />
</h:panelGroup>
See also Why do I need to nest a component with rendered="#{some}" in another component when I want to ajax-update it?
Second, an Integer never equals a String. You're in the rendered attribute testing Integer rowsPerPage against String '332'. Remove those singlequotes to make it a fullworthy number.
<h:panelGroup id="customrowperpage">
<h:inputText value="#{AccountsController.rowsPerPage}" required="true"
rendered="#{AccountsController.rowsPerPage == 332}" />
</h:panelGroup>
A has many required inputs and validations. A couple of command buttons control different inputs.
I can change required attibrute with the value of <f:param>. For instance when a button is clicked,it sets a value.This value changes if an input is required or not. Like this:
<p:commandButton>
<f:param name="button1" value="1"></f:param>
</p:commandButton>
<h:inputText required="#{param['button1'] == 1}"></h:inputText>
This actually works.However i also want to add some valitations like max length.I want to temporarily change this validation too.
I tried to disable valitadion,but i did not work:
<f:validateLength disabled="true" maximum="10"></f:validateLength>
You seem to be using JSF 2.x already. So just use <f:ajax execute> or <p:commandButton process> to specify client IDs of components which are to be executed/processed when the button is pressed. All components which are not included in this will just be ignored and not converted/validated.
E.g.
<h:inputText id="input1" ... required="true" />
<h:inputText id="input2" ... required="true" />
<h:inputText id="input3" ... required="true" />
<h:inputText id="input4" ... required="true" />
<p:commandButton value="Submit inputs 1 and 2" process="input1 input2" ... />
<p:commandButton value="Submit inputs 3 and 4" process="input3 input4" ... />
In case of <p:commandButton> it defaults to #form (i.e. the entire current form).
See also:
Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes