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  • Mike F.
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5 replies

CommandButton params are null but commandlinks are not

Hello

 

I'm having a strange issue, let me start with my code:

 

VisualForce:

 

         <apex:commandButton action="{!sendEmail}" value="Send Email" id="emailButton">
             <apex:param name="frmParam" assignTo="{!frm}" value="{!$User.Email}"></apex:param>
             <apex:param name="toParam" assignTo="{!to}" value="{!Application__c.Email__c}"></apex:param>
             <apex:param name="subjParam" assignTo="{!subject}" value="Your application for position no. {!Application__c.Job_Requisition__r.name}"></apex:param>
         </apex:commandButton>
 Controller:
 
public class emailApplicant {
	private Application__c app;
	private String jobRef = null;
	
	public string frm;
	public string to;
	public string subject;
	public string emailBody;
	
	public string getFrm(){
		return frm;
	}
	
	public string getTo(){
		return to;
	}
	
	public string getSubject(){
		return subject;
	}
	
	public string getEmailBody(){
		return emailBody;
	}
	
	public void setFrm(string value){
		frm = value;
	}
	
	public void setTo(string value){
		to = value;
	}
	
	public void setSubject(string value){
		subject= value;
	}
	
	public void setEmailBody(string value){
		emailBody=value;
	}
	
	
	public emailApplicant(ApexPages.StandardController controller){
		app = (Application__c)controller.getSubject();
		
		//Id id = System.currentPageReference().getParameters().get('id');
		jobRef = [SELECT name FROM job_req__c WHERE id = :app.job_requisition__c].name;
	}
	
	public Application__c getAppInfo(){
		return app;
	}
	
	public String getJobRef(){
		return jobRef;
	}
	
	public PageReference sendEmail(){
		
    	PageReference p = new PageReference('https://na6.salesforce.com/'+app.job_requisition__c);
    	p.setRedirect(true);    		
		
		Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

		String [] toAddresses = new String[]{to};

		mail.setToAddresses(toAddresses);
		
		mail.setReplyTo(frm);		
		mail.setSenderDisplayName(frm);
		
		mail.setSubject(subject+to+frm);
		
		mail.setPlainTextBody(emailBody);
		
		Messaging.sendEmailResult[] results = Messaging.sendEmail(new Messaging.SingleEmailMessage[]{mail});
		
		for ( Messaging.sendEmailResult result : results ) {
    		if ( !result.isSuccess () ) {
        		System.debug ( result );
        		return p;
    		}
		}
    	
    	return p;
	} 

}
 
The issue is that if I use a commandbutton in the VisualForce page I get the following error: 
 
 
System.EmailException: SendEmail failed. First exception on row 0; first error: INVALID_EMAIL_ADDRESS, Invalid to address : null 
 
This value is not null, and I can attest to this because if I simply change the commandButton into a commandLink, the result is positive. Could someone tell me if there is a bug, or if I am using the component incorrectly.
 
Thanks,
Wes