Primefaces datatable filter doesn't work

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I must do something fundamentally wrong, I stripped down the code to the bare minimum with a data table and enabling one column filter and a globe filter.

The funny

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旧时难觅i

2020-12-21 06:43

Please see lazy property this may be that your data not filter.

lazy="true" change lazy=false

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小鲜肉

2020-12-21 06:45

finally I figured out that when you use Lazy the filtered data is not stored in other variable as in non lazy implementation, everytime you call a filter the load method is executed, so I had to put the filters also in my Load, also the sorting this is the way when using Lazy.

My mistake !

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刺人心

2020-12-21 06:48
You should initialize filtredProjects with the same data that contains the ArrayList allProjects like this:
```
@PostConstruct
public void loadAllProjects(){
allProjects =  projectEJB.getAllProjects();
filtredProjects = projectEJB.getAllProjects();
}
```
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没有蜡笔的小新

2020-12-21 06:48

Do not use lazy loading when filtering and/or sorting

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慢半拍i

2020-12-21 06:59

The filters features of p:dataTable need to be wrapped in <h:form> tags for work fine. The code xhtml modified would:

<!DOCTYPE html>
<html xmlns="http://www.w3c.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:p="http://primefaces.org/ui">

<ui:composition template="layout.xhtml">

    <ui:define name="title">All Projects</ui:define>    

    <ui:define name="content">
       <h:form>
           <p:dataTable var="project" value="#{projectController.allProjects}" widgetVar="projectTable" filteredValue="#{projectController.filteredProjects}">

              <f:facet name="header">
                <p:outputPanel>  
                    <h:outputText value="Search all fields:" />  
                    <p:inputText id="globalFilter" onkeyup="PF('projectTable').filter()" style="width:150px" />  
                 </p:outputPanel>
              </f:facet>

              <p:column headerText="Name" filterBy="#{project.name}">
                 <h:outputText value="#{project.name}" />
              </p:column>

              <p:column headerText="Priority">
                 <h:outputText value="#{project.priority}" />
              </p:column>

             <p:column headerText="Exit">
                 <h:outputText value="#{project.exitCriteria}" />
             </p:column>

          </p:dataTable>      
      </h:form>
   </ui:define>
</ui:composition>

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