> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Conditional Filtering

> Learn two conditional filtering methods—in-component filtering and Filter-based filtering—and how to require an empty field when using in-component filtering.

Conditional filtering comes in two types:

**In-component filtering**: fixed Filter conditions applied to the data of a specific component.

**Filter-based filtering**: links a component to a Filter so that component data can be filtered based on the Filter's value.

<Warning>
  For in-component filtering, to require that a field be empty, follow the steps shown below. No formula needs to be configured for the field.
</Warning>