Refered Link : http://blog.jeffdouglas.com/2009/01/13/apex-search-with-checkbox-results/
January 13th, 2009
This demo is a single Apex custom controller, two Visualforce
pages and a wrapper class allowing the user to search an object by keyword (via
Dynamic SOQL) and return the results in a page block table with corresponding
checkboxes. Selecting one or more checkboxes and clicking the ‘See Results’
button displays the list of the selected items.
This is a very common function as you typically want to search
for stuff and then process some selected stuff.
Custom Controller –
CategorySearchController
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public class CategorySearchController {
// the results from the search. do not init the results or a
blank rows show up initially on page load
public List<categoryWrapper> searchResults {get;set;}
// the categories that were checked/selected.
public List<categoryWrapper> selectedCategories {
get {
if
(selectedCategories ==
null)
selectedCategories = new List<categoryWrapper>();
return
selectedCategories;
}
set;
}
// the text in the search box
public string searchText {
get {
if
(searchText == null) searchText = 'Category'; // prefill the serach box for
ease of use
return
searchText;
}
set;
}
// constructor
public CategorySearchController() {}
// fired when the search button is clicked
public PageReference search()
{
if (searchResults == null) {
searchResults =
new List<categoryWrapper>(); // init the list if it is
null
} else {
searchResults.clear(); // clear out the current results if they exist
}
// Note: you could have
achieved the same results as above by just using:
// searchResults = new
List<categoryWrapper>();
// dynamic soql for fun
String qry = 'Select c.Name, c.Id From Cat3__c c Where c.Name LIKE \'%'+searchText+'%\' Order By c.Name';
// may need to modify for governor limits??
for(Cat3__c c : Database.query(qry)) {
// create a new wrapper by
passing it the category in the constructor
CategoryWrapper cw = new CategoryWrapper(c);
// add the wrapper to the
results
searchResults.add(cw);
}
return null;
}
public PageReference next()
{
// clear out the currently
selected categories
selectedCategories.clear();
// add the selected
categories to a new List
for (CategoryWrapper cw :
searchResults) {
if
(cw.checked)
selectedCategories.add(new CategoryWrapper(cw.cat));
}
// ensure they selected at
least one category or show an error message.
if (selectedCategories.size() > 0) {
return
Page.Category_Results;
} else {
ApexPages.addMessage(new ApexPages.message(ApexPages.severity.ERROR,'Please select at least one Category.'));
return
null;
}
}
// fired when the back button is clicked
public PageReference back()
{
return Page.Category_Search;
}
}
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Visualforce Search
Page – Category_Search
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<apex:page controller="CategorySearchController">
<apex:form >
<apex:pageBlock mode="edit" id="block">
<apex:pageBlockButtons >
<apex:commandButton action="{!next}"
value="See Results"
disabled="{!ISNULL(searchResults)}"/>
</apex:pageBlockButtons>
<apex:pageMessages />
<apex:pageBlockSection >
<apex:pageBlockSectionItem >
<apex:outputLabel for="searchText">Search
for Categories</apex:outputLabel>
<apex:panelGroup >
<apex:inputText id="searchText"
value="{!searchText}"/>
<!-- We could have rerendered just the resultsBlock
below but we want the -->
<!-- 'See Results' button
to update also so that it is clickable. -->
<apex:commandButton value="Search"
action="{!search}"
rerender="block"
status="status"/>
</apex:panelGroup>
</apex:pageBlockSectionItem>
</apex:pageBlockSection>
<apex:actionStatus id="status" startText="Searching... please wait..."/>
<apex:pageBlockSection title="Search Results" id="resultsBlock" columns="1">
<apex:pageBlockTable value="{!searchResults}"
var="c" rendered="{!NOT(ISNULL(searchResults))}">
<apex:column width="25px">
<apex:inputCheckbox value="{!c.checked}"/>
</apex:column>
<apex:column value="{!c.cat.Name}"
headerValue="Name"/>
</apex:pageBlockTable>
</apex:pageBlockSection>
</apex:pageBlock>
</apex:form>
</apex:page>
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Visualforce Results
Page – Category_Results
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<apex:page controller="CategorySearchController">
<apex:form >
<apex:pageBlock >
<apex:pageBlockButtons >
<apex:commandButton action="{!back}"
value="Back"/>
</apex:pageBlockButtons>
<apex:pageMessages />
<apex:pageBlockSection title="You Selected" columns="1">
<apex:pageBlockTable value="{!selectedCategories}"
var="c">
<apex:column value="{!c.cat.Name}"/>
</apex:pageBlockTable>
</apex:pageBlockSection>
</apex:pageBlock>
</apex:form>
</apex:page>
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Wrapper Class –
CategoryWrapper
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public class CategoryWrapper {
public Boolean checked{ get; set; }
public Cat3__c cat {
get; set;}
public CategoryWrapper(){
cat = new
Cat3__c();
checked = false;
}
public CategoryWrapper(Cat3__c
c){
cat = c;
checked = false;
}
public static testMethod void testMe() {
CategoryWrapper cw = new CategoryWrapper();
System.assertEquals(cw.checked,false);
CategoryWrapper cw2 =
new CategoryWrapper(new Cat3__c(name='Test1'));
System.assertEquals(cw2.cat.name,'Test1');
System.assertEquals(cw2.checked,false);
}
}
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