RE: How to do a validation that requires an API call

Jeroen Somhorst — Tue, 25 Feb 2020 14:19:08 GMT

consider the following example. In this example we add a validation task that checks a certain account number field. In the success/error callbacks we execute the callback that we initialy received from the validation method.

// initialize method of the create/record.js

this.model.addValidationTask('check_accountnumber',_.bind(this._doValidateAccountNumber,this));

// the actual validation method: 
_doValidateAccountNumber: function(fields, errors, callback){
console.log('validate account number');
        let acnumber = this.model.get('accountnumber_c');
        if(!_.isEmpty(acnumber) && !_.isUndefined(acnumber)){
            let options = {async: false};
            let url = app.api.buildURL('accounts','number/'+acnumber);
            app.api.call('read',url,options,{
                success: _.bind(this.onValidAccountNumber,this,fields,errors,callback),
                error: _.bind(this.onInvalidAccountNumber,this,fields,errors,callback)
            });
        }else{
            callback(null, fields, errors);
        }
    },


onValidAccountNumber: function(fields,errors,callback){
        callback(null, fields, errors);
},

onInvalidAccountNumber: function(fields,errors,callback){
  errors['accountnumber_c'] = errors['accountnumber_c'] || {};
  errors['accountnumber_c'].account_number_duplicate_msg = true;
  callback(null, fields, errors);
},

RE: How to do a validation that requires an API call

Hatim Alam — Mon, 24 Feb 2020 02:28:19 GMT

Hi Kenneth Brill,

Why don't you use this.model.addValidationTask and write your validation script under that?

This way, you can wait for your API to come back with response and then return the callback.

this.model.addValidationTask('validate_email', _.bind(this._doValidateEmailAddress, this));

Let us know if this helps.