Remove empty fields from list items

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atst/forms/application.py

@@ -1,11 +1,11 @@
-from flask_wtf import FlaskForm
+from .forms import BaseForm
 from wtforms.fields import StringField, TextAreaField, FieldList
 from wtforms.validators import Required
 from atst.forms.validators import ListItemRequired, ListItemsUnique
 from atst.utils.localization import translate
 
 
-class ApplicationForm(FlaskForm):
+class ApplicationForm(BaseForm):
     name = StringField(
         label=translate("forms.application.name_label"), validators=[Required()]
     )

atst/forms/forms.py

@@ -3,9 +3,12 @@ from flask import current_app, request as http_request
 
 from atst.utils.flash import formatted_flash as flash
 
+EMPTY_LIST_FIELD = ["", None]
+
 
 class BaseForm(FlaskForm):
     def __init__(self, formdata=None, **kwargs):
+        # initialize the form with data from the cache
         formdata = formdata or {}
         cached_data = current_app.form_cache.from_request(http_request)
         cached_data.update(formdata)
@@ -13,8 +16,13 @@ class BaseForm(FlaskForm):
 
     @property
     def data(self):
+        # remove 'csrf_token' key/value pair
+        # remove empty strings and None from list fields
         _data = super().data
         _data.pop("csrf_token", None)
+        for field in _data:
+            if _data[field].__class__.__name__ == "list":
+                _data[field] = [el for el in _data[field] if el not in EMPTY_LIST_FIELD]
         return _data
 
     def validate(self, *args, **kwargs):