Angular passes undefined when a field is blank

Question

I have a form with mandatory and non mandatory fields. If I do not enter any data into the non mandatory fields, undefined is passed by default instead of a null string/ empty object/ empty Array. As a result, this variable is not stored in the DB at all

Is there any Generic way to pass an empty string/object/array instead of undefined when the field is left blank?

Answer 1

You can initialize the model with a space using ngInit directive. Like

<input type="text" ng-model="testModel" ng-init="testModel=' '" /> 

This way the model is always initialized to space character and will be sent in the query parameter therefore it will stored in the database. If the user types any text the value will be updated in model.