> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt # Method name: data.items.filter() # Method Link: https://dev.wix.com/docs/sdk/business-solutions/data/items/filter.md # Method Description: Creates a filter for queries and aggregations. The `filter()` method builds a filter to be applied to a query or an aggregation. It returns a `WixDataFilter` object, which can be used with other filter methods such as `and()`, `or()` and `not()`, to create complex filter definitions. When working with [Wix app collections](https://dev.wix.com/docs/develop-websites/articles/databases/wix-data/collections/working-with-wix-app-collections-and-code.md), check which fields can be used in a filter. # Method Permissions: # Method Permissions Scopes IDs: undefined