[SalesForce] Showing String value in apex:outputText for visualforce

I have a method which is supposed to return a string. I now want to pass that method as a value to apex:outputText in order to see what the returned string is. However, I keep getting an error on the Visualforce Page which says that the method is an unknown property. What exactly is the problem? When I test a method which returns an integer, it seems to work perfectly.

Heres a basic breakdown in terms of code of what I'm trying to do:

public String showSAstring(){ 

String x= '';

        if(accwrapper.selected == true)
        {
            System.debug('TESTING');
            utility.selectedAssets.add(accwrapper.acc);
            x+='    ' +  accwrapper.acc.Name;
        }    

String showString = 'The substrings are'+x;
return showString;

}

and here is what my apex statement looks like:

<apex:pageBlockSection Title="Actions" >
                <apex:commandButton action="{showSAstring}" value="Submit"/>
                <apex:outputText value="{!showSAstring}"/>

            </apex:pageBlockSection>

so basically when I press submit using the command button, it should go through my method. I'm only using outputText value right now to make sure I'm getting the right results and this will not be included in the final version of the method.

However, when i compile on developer console, it tells me that showSAstring is an unknown property.

Best Answer

This line of your code:

<apex:outputText value="{!showSAstring}"/>

is actually looking for a method named: getshowSAstring()

If you would like the string to display on initial load (without a button click), you could change your Apex to:

public String getshowSAstring() { 

String x= '';

        if(accwrapper.selected == true)
        {
            System.debug('TESTING');
            utility.selectedAssets.add(accwrapper.acc);
            x+='    ' +  accwrapper.acc.Name;
        }    

String showString = 'The substrings are'+x;
return showString;
}

And Visualforce:

<apex:pageBlockSection Title="Actions" >
    <apex:outputText value="{!showSAstring}"/>
</apex:pageBlockSection>

Related Solutions

[SalesForce] Rendering a Conditional Format for VisualForce Table Cell

Visualforce's expression language doesn't support the calling of controller methods with arbitrary parameters. (In occasional circumstances you may be able to use the available map syntax to approximate this.)

The binding between Visualforce pages and controllers is primarily based on controller properties that at most can have setter and getter methods. Multiple levels of reference are supported though e.g. "Child.Parent.ParentField".

So unfortunately you have to bend your thinking to these limitations, and as @dphil suggests that generally means refactoring so that instead of your controller supplying a list of SObjects, it supplies a list of "wrapper" objects:

public class MyWrapper {
    public MySObject__c sob {get; private set;}
    public MyWrapper(MySObject__c sob) {
        this.sob = sob;
    }
    public String getStyle() {
        Decimal val = getDefendNTAPNum();
        if (val >= 0 && val < 25) {
            return 'background-color:#FF0000;';
        } else if ...
    }
    public Decimal getDefendNTAPNum() {
        return ...;
    }
}

Then your page can reference a "computed" value or just the underlying SObject field as required:

<apex:column headervalue="SitNum" style="{!w.style}" value="{!w.sob.MyField__c}">

Note that there is also a set of built in functions (including a CASE function) that sometimes can be used to implement basic conditional logic within the Visualforce expression.

[SalesForce] Visualforce: apex:repeat and Map

In the line:

<apex:inputCheckbox label="{!xmlCatalogsMap[i]}" value="{!i}" html-name="CatalogId" />

value attribute should be Boolean. So that checkbox can be marked as check or uncheck.

Currently it's Integer. That's why it is showing error.

To fix this problem, set up a map of Integer to Boolean, then bind the checkbox to that instead.

public Map<Integer, Boolean> xmlCatalogsChecked { get; set; }

public void getXMLCatalogs() {
    // Query omitted
    xmlCatalogsChecked = new Map<Integer, Boolean>();
    for (ZXMLCatalogs__c c : result) {
        xmlCatalogsMap.put(Integer.valueOf(c.BOID__c), c.Name);
        // Assign default state
        xmlCatalogsChecked.put(Integer.valueOf(c.BOID__c), false);
    }
}

<apex:inputCheckbox label="{!xmlCatalogsMap[i]}" value="{!xmlCatalogsChecked[i]}" 
    html-name="CatalogId" />

Update based on Comments

Main issue in your code is this line at getXMLCatalogs() method which is initializes the map and makes that empty.

Map<Integer, String> xmlCatalogsMap = new Map<Integer, String>();

I have create apex class and pages just like you and it is working correctly.

Apex class

public class DealerController
{
    public Map<Integer, String> xmlCatalogsMap {get;set;}
    public Map<Integer, Boolean> xmlCatalogsChecked { get; set; }

    public Set<Integer> xmlCatalogsKeys {get;set;}

    public DealerController()
    {
        getXMLCatalogs();
    }

    public void getXMLCatalogs() {
        xmlCatalogsKeys = new Set<Integer>();

        String sql = 'SELECT Dealer_Number__c, Name FROM Dealer__c ORDER BY Name';
        List<Dealer__c> result = Database.query(sql);

        xmlCatalogsMap = new Map<Integer, String>();
        xmlCatalogsChecked = new Map<Integer, Boolean>();

        for (Dealer__c c : result) {
            xmlCatalogsMap.put(Integer.valueOf(c.Dealer_Number__c), c.Name);
            // Assign default state
            xmlCatalogsChecked.put(Integer.valueOf(c.Dealer_Number__c), false);
        }
         xmlCatalogsKeys = new Set<Integer>(xmlCatalogsMap.keySet());


    }

}

Visualforce

<apex:page id="dealerPage" controller="DealerController" action="{!getXMLCatalogs}">
    <apex:form >
    <apex:pageBlock >
    <apex:pageBlockSection >
    <apex:repeat value="{!xmlCatalogsKeys}" var="i">


            <apex:inputCheckbox label="{!xmlCatalogsMap[i]}" value="{!xmlCatalogsChecked[i]}" 
            html-name="CatalogId" />


    </apex:repeat>
    </apex:pageBlockSection>
    </apex:pageBlock>
    </apex:form>
</apex:page>

Result

Best Answer

Related Solutions

[SalesForce] Rendering a Conditional Format for VisualForce Table Cell

[SalesForce] Visualforce: apex:repeat and Map

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