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edited Apr 26, 2016 at 8:10

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Pages with a StandardController expose a property:

{!Messages}

Without the need for a custom controller or extensions, can do things like:

<apex:pageBlock rendered="{!NOTISNULL(Messages.Empty)}">
    <!-- detailed troubleshooting instructions -->
</apex:pageBlock>

<apex:pageBlock rendered="{!NOT(ISNULL(Messages.Empty))}">
    <!-- normal page functionality -->
</apex:pageBlock>

Pages with a StandardController expose a property:

{!Messages}

Without the need for a custom controller or extensions, can do things like:

<apex:pageBlock rendered="{!NOT(Messages.Empty)}">
    <!-- detailed troubleshooting instructions -->
</apex:pageBlock>

<apex:pageBlock rendered="{!Messages.Empty}">
    <!-- normal page functionality -->
</apex:pageBlock>

Pages with a StandardController expose a property:

{!Messages}

Without the need for a custom controller or extensions, can do things like:

<apex:pageBlock rendered="{!ISNULL(Messages)}">
    <!-- detailed troubleshooting instructions -->
</apex:pageBlock>

<apex:pageBlock rendered="{!NOT(ISNULL(Messages))}">
    <!-- normal page functionality -->
</apex:pageBlock>

Source Link

created Aug 13, 2015 at 0:06

Matt and Neil

33.1k
7
107
189

Pages with a StandardController expose a property:

{!Messages}

Without the need for a custom controller or extensions, can do things like:

<apex:pageBlock rendered="{!NOT(Messages.Empty)}">
    <!-- detailed troubleshooting instructions -->
</apex:pageBlock>

<apex:pageBlock rendered="{!Messages.Empty}">
    <!-- normal page functionality -->
</apex:pageBlock>