[SalesForce] Passing multiple methods into Apex ‘rendered’ attribute

Can I pass a second method into the rendered attribute of the following apex element?

    <apex:outputText rendered="{!(firstMethod == true)}">           
        <img class="refresh_btn" src="{!URLFOR($Resource.Images, 'images/icon_refresh.png')}" alt=""/>
    </apex:outputText>

Would this work?

    <apex:outputText rendered="{!(firstMethod == true)} && {!(secondMethod == true)}">          
        <img class="refresh_btn" src="{!URLFOR($Resource.Images, 'images/icon_refresh.png')}" alt=""/>
    </apex:outputText>

So both firstMethod and secondMethod must return true for the element to render.

Best Answer

Yes you can, although your syntax is a little off. The following should work:

<apex:outputText rendered="{!(firstMethod == true) && (secondMethod == true)}">

Which you should be able to reduce to:

<apex:outputText rendered="{!firstMethod && secondMethod}">

Related Solutions

[SalesForce] Render columns in page block table based on method

When you initialise your wrapper items, add the following code after that in order to identify which of your items should be selected or not.

Set <Id> savedMatchIds = new Set <Id> ();
Set <Id> engagementIds = new Set <Id> ();

for (EngagementWrapper engwrapper : engListWrap)
{
    engagementIds.add(engwrapper.eng.Id);
}

for (Match__c match : [SELECT Id, Engagement__c FROM Match__c WHERE Engagement__c IN :engagementIds AND Status__c = 'Saved'])
{
    savedMatchIds.add(match.Engagement__c);
}

for (EngagementWrapper engwrapper : engListWrap)
{
    if (savedMatchIds.contains(engwrapper.eng.Id))
    {
        engwrapper.selected = true;
    }
    else
    {
        engwrapper.selected = false;
    }
}

Then in your page simply render the column based on the "selected" variable:

<apex:column rendered="{!item.selected}">

I don't know what else is happening in your code, but based on what you've provided so far in your question, this should work.

[SalesForce] rendered= expressions and use of the ! operator

{!} is merge syntax

Adding parentheses may help visualize what is happening in your evaluations.

true and not true == false

<apex:outputLink rendered="{! (isTrue && !isTrue) }">

true and not not true (true to false and then back to true) == true

<apex:outputLink rendered="{! (isTrue && !!isTrue) }">

Best Answer

Related Solutions

[SalesForce] Render columns in page block table based on method

[SalesForce] rendered= expressions and use of the ! operator

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