ExtJs: Form isValid() is false. But how to know why the form is invalid?

Question

I am using an ExtJs form having a file upload field in it. On selecting a file I am calling the submit() method of the form. But before submitting I am checking if the form is

Answer 1

You can try adding the following function to your Form Panel definition:

getInvalidFields: function() {
    var invalidFields = [];
    Ext.suspendLayouts();
    this.form.getFields().filterBy(function(field) {
        if (field.validate()) return;
        invalidFields.push(field);
    });
    Ext.resumeLayouts(true);
    return invalidFields;
}

It will return an array containing only those fields that were evaluated as invalid, here is a working example.