String is empty
Input
| value |
|---|
Validate that value is empty
validation:stringIsEmpty
Ensure string field is empty
source:value
Output
| result |
|---|
| Pass |
| Pass |
| Pass |
| String field "value" is not empty |
| String field "value" is not empty |
| String field "value" is not empty |
Sample inputs run locally in your browser using the same operation logic as Fontana Flow.
Results are illustrative, not connected to a workflow.
Ensure string field is empty.
Parameters
This operation has no configurable parameters.
Field selection
- source — Field whose values this operation reads. Omit to apply to all fields on the row.
- target — Optional output field. When omitted, the source field is updated in place.
JSON Configuration
{ "id": "op-stringIsEmpty", "type": "validation", "action": "stringIsEmpty", "params": {}, "testInputs": [ "", " ", "\t", "hello", "x", "value" ]}