How can i create a custom button, when pressed will create and insert a new Quote?

Question

I need to create a custom button on my Opportunity Page Layout and when it is pressed this button needs to create automatically a Quote. Basically, the point of this is to avoid clicking so much. I wrote some code but I don't know if it's good or bad and I don't know how to continue to this.

public class MyController {
public String currentRecordId {get;set;}
public String parameterValue {get;set;}
public Opportunity opp {get;set;}

public MyController(ApexPages.StandardController controller){
    currentRecordId = ApexPages.currentPage().getparameters().get('id');
    opp = [Select id From Opportunity where id =: currentRecordId];
    parameterValue =ApexPages.currentPage().getparameters().get('nameParam');

    Quote qo = new Quote();
    insert qo;
  }
}

Answer 1

All you need is:-

Create a Controller with a method createrecord with return type pagerefernce. Here I am creating a quote related to that Opportunity and redirect to newly created quote:-

public class quoteController {

    public String currentRecordId {get;set;}
    public Opportunity opp {get;set;}

    public quoteController(ApexPages.StandardController controller){
        currentRecordId = ApexPages.currentPage().getparameters().get('id');
        opp = [Select id, Accountid From Opportunity where id =: currentRecordId];
    }
    public PageReference createquote(){
         Quote qo = new Quote();
        qo.Opportunityid=opp.id;
        qo.Name='Test';
        insert qo;
        PageReference pr = new PageReference('/' +qo.id);
                 pr.setRedirect(true);
        return pr;
    }
}

Now, create a visualforce page and call that method in this page as follows:-

<apex:page extensions="quoteController" standardController="Opportunity" action="{!createquote}">
</apex:page>

Now, go to setup--> opportunity-->button links and action--> create a new button---> content source-- visualforce page-->fill other details-->save it-->add it to opportunity layout Remember to add your button display behaviour as Display in existing window without sidebar or header

Your custom quote button is ready. Hope it helps You.