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Activity › Forums › Salesforce® Discussions › How to create trigger using apex class to count the no of contacts?

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  • Nauman

    Member
    December 5, 2017 at 11:35 AM

    This example shows Apex to create an ApexPage, but from python it will be a matter of sending the request to the correct endpoint.

    You'll need to send a JSON payload to the correct enpoint with the correct details, for ApexTrigger see here: http://www.salesforce.com/developer/docs/api/Content/sforce_api_objects_apextrigger.htm

    private void setRestPostUrl(){
    String sfdcUrl = (String)URL.getSalesforceBaseUrl().toExternalForm();
    String apiPath = '/services/data/v30.0/sobjects/ApexPage';
    restPostUrl = sfdcUrl+apiPath;

    }

    sfdcURL would be: "naXX.Salesforce.com", where XX is the instance (na1, na2, na3...)
    apiPath: the last part 'ApexPage' is what you'll need to modify. For Triggers: ApexTrigger, for classes: ApexClass.

    So you'll need your OAuth token, and send your payload to: https://na10.salesforce.com/services/data/v30.0/sobjects/ApexTrigger
    (You'll set a Header as 'Authorization' with the OAuth token.)

  • Rajan

    Member
    December 29, 2017 at 9:54 AM

    Using Apex classes------------------

    public class mytriggercount{
    public static void counttrigger(contact [] cts){
    set<id> accidlist = new set<id>();
    for(contact con:cts){
    accidlist.add(con.Accountid);
    }
    list<account> acc = new list<account>();
    for(Account a:[select id,my_contacts__c,(select id from contacts)from Account where id IN:accidlist]){
    a.my_contacts__c = a.contacts.size();
    acc.add(a);
    }
    update acc;
    }
    }

    trigger-------------------------------

    trigger countcontacts1 on Contact (after insert,after update,after delete,after undelete) {
    if(trigger.isafter){
    if(trigger.isinsert){
    mytriggercount.counttrigger(trigger.new);
    }
    }
    if(trigger.isafter){
    if(trigger.isundelete){
    mytriggercount.counttrigger(trigger.new);
    }

    }
    if(trigger.isafter){
    if(trigger.isupdate){
    mytriggercount.counttrigger(trigger.new);
    }
    }
    if(trigger.isafter){
    if(trigger.isupdate){
    mytriggercount.counttrigger(trigger.old);
    }
    }
    if(trigger.isafter){
    if(trigger.isdelete){
    mytriggercount.counttrigger(trigger.old);
    }
    }
    }

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