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  • wsthesis
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8 replies

Passing Parameters from Visualforce Page to Controller methods

Am I allowed to pass a parameter from my visualforce page to a controller method?


I want to create a method which returns boolean TRUE or FALSE depending on if the related list contains any records. I'm trying to avoid creating 15-20 get/set methods.


 

Code:
VisualForce Page Segment:
<apex:page standardController="Account" extensions="AccountHiddenListControllerExtension">
    </apex:detail>
        <apex:relatedList list="contacts" rendered="{!doesRelatedListExist('contacts'}">>
        </apex:relatedList>
        <apex:relatedList list="ActivityHistories" rendered="{!doesRelatedListExist('ActivityHistories'}">>
        </apex:relatedList>
    </apex:detail>
</apex:page>

Controller class:
    public boolean doesRelatedListExist(String listName)
    {

        if (listName.equals('contacts'))
        {
            return ((this.getContactList().size()) > 0);
        }
        if (listName.equals('ActivityHistories'))
        {
            return ((this.getActivityHistoriesList().size()) > 0);
        }

        // default value
        return true;
    }


 

The controller saves correctly; however, i get the following error message when saving the visualforce page:
Error: Unknown function doesRelatedListExist. Check spelling. 


Thanks in advance.



Message Edited by wsthesis on 12-25-2008 06:26 PM
6 replies

"View" Filters on Home Tabs

On many of the "home" tabs (ex) leads, contacts, accounts, opportunities) underneath the initial header, there is a
View: ____drop down list_______ [Go] {Edit Link} {Create New View}

I want to programmatically (using visual force or apex code) recreate this same drop down list in a new apex controller/visualforce page.
1. Where in the schema is this view information stored? What's the SOQL object name (or field(s)) to get this list of views (for use in a SOQL query)?
2. Is there an apex tag that renders this list?
Sorry for the double post in apex code/visual force, but I'm unsure which boundary it falls into. Thanks in advance.
 
7 replies

Render Related List(s) only if a related record in the list exists

I'm trying to use visualforce to perform the following:
A. Show related lists (and all headings) only if a related record exists.
B. If a related record does not exist, the particular section is not displayed.
 
I'm trying to use the apex:relatedList tag with the rendered attribute.
 
Is it possible to check if the list is empty as a boolean expression within visualforce without having to create a custom controller method? I have a working solution, but if I want to add this functionality for all related lists, it's a lot of extra controller code to write.
 
Thanks in advance.
 
 
VisualForce View Page
<apex:page standardController="Account" extensions="AccountHiddenListController">
    <apex:detail relatedList="false">
        <apex:relatedList list="Opportunities" rendered="{!relatedOpportunitiesExist}">    
        </apex:relatedList>
    </apex:detail>
</apex:page>
 
 
Controller Code:
public class AccountHiddenListController
{
    private final Account account;
    private boolean relatedOpportunitiesExist;
   
    public AccountHiddenListController (ApexPages.StandardController accountController)
    {
        this.account = (Account) accountController.getRecord();
    }
   
    public boolean getRelatedOpportunitiesExist()
    {
        if (this.relatedOpportunitiesExist != null)
        {
            return this.relatedOpportunitiesExist;
        }
   
        List<Opportunity> opp = this.getOpportunitiesList();
        if (opp.size() > 0)
        {
            this.relatedOpportunitiesExist = true;
        }
        else
        {
            this.relatedOpportunitiesExist = false;       
        }
        return this.relatedOpportunitiesExist;
           
    }
   
    public void setRelatedOpportunitiesExist()
    {
   
    }
   
    public List<Opportunity> getOpportunitiesList()
    {
        if (this.account == null)        
            return null;       
        return [select o.id
        from Opportunity o
        where o.AccountId = :account.id];
       
    }
   
}
1 replies

Preferred/Proper Way to Import Third Party Code into force.com IDE

I'm using the Force.com IDE and trying to integrate other people's code from code share. Specifically, I'm trying to integrate Google Maps/Google Earth functionality by using Ron Hess's project (force-google-earth found at: http://code.google.com/p/force-google-earth.
 
1. Is the preferred methodology to create a new folder under /src to add these source files?
2. Is it better to create an application? (ex) App Name = GoogleEarth, then copy all source files into the application)?
 
3. I tried to add the files in systematically into the respective source folders (ex) triggers/geocode.trigger from GoogleEarth project into my project) , but seem to get compile errors. Is there a specific order for how files should be added/deployed to force.com ide to prevent compile errors?
 
If my question(s) are not clear, please let me know and I can try to provide additional details. Thanks in advance.
 
6 replies

"View" Filters on Home Tabs

On many of the "home" tabs (ex) leads, contacts, accounts, opportunities) underneath the initial header, there is a
View: ____drop down list_______ [Go] {Edit Link} {Create New View}

I want to programmatically (using visual force or apex code) recreate this same drop down list in a new apex controller/visualforce page.
1. Where in the schema is this view information stored? What's the SOQL object name (or field(s)) to get this list of views (for use in a SOQL query)?
2. Is there an apex tag that renders this list?
Sorry for the double post in apex code/visual force, but I'm unsure which boundary it falls into. Thanks in advance.