# Introduction
### Summary
Implements side effect handling for `ViewGroup` and `ViewFilters` when
field metadata is updated in the v2 architecture. This ensures that
view-related records are properly maintained when enum field options are
modified, deleted, or created.
### Side effects
- **Side Effect System**: Added side effect handling for field metadata
updates that manages related view groups and view filters
- **Enum Field Updates**: When enum field options are modified, the
system now:
- **View Groups**: Creates new groups for added options, updates
existing groups for modified options, and deletes groups for removed
options
- **View Filters**: Updates filter values to reflect option changes and
removes filters that reference deleted options
### Enum runner fix
Update now works for both atomic enum and array enum ( multi select for
instance )
### Compute flat entity maps from to
Standardized this method usage across v2 services
Next step is to require dependencies dynamically
## Conclusion
closes https://github.com/twentyhq/core-team-issues/issues/1649
# Introduction
Preparing view-filter and view-group introduction in v2 core engine
Moving view from `core-modules` to `metadata-modules`
## What happened
### Created dedicated modules for each view entity:
- ViewFieldModule
- ViewFilterModule
- ViewFilterGroupModule
- ViewGroupModule
- ViewSortModule
### Each module is now completely independent with its own:
- Controller
- Resolver
- Service
- Entity
### Created dedicated abstraction metadata module folder for:
- flat-view-field
- flat-view
### Dependencies
- Eleminated circular dep on ViewModule to all others ones
- Granular import not importing the whole viewModule anymore everywhere
close https://github.com/twentyhq/core-team-issues/issues/1703
## Context
View tables were missing some FK, we are also introducing delete cascade
on those tables when needed to leverage pg cascade deletion instead of
having to implement it.
Also renaming those classes with Entity suffix to follow repo
guidelines.
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>
