# Introduction
Adding view-group to core engine v2
Following https://github.com/twentyhq/twenty/pull/15010 ( same pattern )
## What's done
- Created flat-view-group
- flat view group runner
- flat view group builder
- create view group service v2 and input transpilers
- refactor the existing view group resolver to fix standard (
BREAKING_CHANGE on graphql api update especially ) REST stays the same
- refactored the front to consume the mutations autogenerated
close https://github.com/twentyhq/core-team-issues/issues/1665
Created:
- Services
- Resolvers
- Controllers
- Tests for services
- Integration tests for GraphQL and Rest
Updated the Rest API playground
Added new feature flag `IS_CORE_VIEW_ENABLED`
Updated `viewFilter` `operand` and `view` `type` to be enums rather than
strings and generated migration file.
Closes https://github.com/twentyhq/core-team-issues/issues/1259
---------
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>
Paul Rastoin