# 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
# Introduction
Initial motivation here was to migrate the object related records logic
from v1 to v2, please note that now in v2 views aren't records anymore
but core engine entities
## What's done
- Added specific label identifier targeting view field logic
- Handled side effects on viewField creation with lowest position on
object label identifier mutation
- Added viewField relations in field metadate entity + handled
optimistic in builder v2
- Added view relations in object metadata entity + handled optimistic in
builder v2
- Added integration tests covering the side effects and new validation
exceptions
- Sandardized cache computation
- Coverage on object metadata creation side effect on views and view
fields
## Coverage
```ts
PASS test/integration/graphql/suites/view/view-field/object-identifier-update-side-effect-on-view-field.integration-spec.ts
View Field Resolver - Successful object metadata identifier update side effect on view field
✓ should create a view field on label identifier object metadata update if it does not exist on view (7 ms)
✓ Should not allow deleting a label identifier view field (17 ms)
✓ Should not allow destroying a label identifier view field (6 ms)
✓ Should not allow updating a label identifier view field visibility to false (8 ms)
✓ Should not allow creating a view field with a position lower than the label idenfitier view field (180 ms)
✓ Should not allow updated labelIdentifier view field with a position higher than existing other view field (346 ms)
✓ Should allow updated labelIdentifier view field with a position higher than existing other view field (434 ms)
Test Suites: 1 passed, 1 total
Tests: 7 passed, 7 total
Snapshots: 5 passed, 5 total
Time: 4.571 s, estimated 5 s
```
close https://github.com/twentyhq/core-team-issues/issues/1664
# Introduction
Initially this PR was about introducing integration coverage for view
field v2 tests
But feature itself wasn't finished, so ended up in a TDD style
devlopment
## The new orchestrator
Orchestrator will organize each flat entity diffing inferring either
validation errors or actions sequentially.
A new builder has been introduced when extended requires to define flat
entity validation utils and action generation for `delete` `update`
`create` operations. It's highly typed using generics
## View field integration testing
Introduce coverage on failing basic tests cases for view field
operations, successfull create is also covered. We could still add more
coverage, will be done later in following PRs
## Remaining tasks for upcoming PRs:
- [ ] rename builder methods names to add generate action in their names
- [x] refactor view validation to handle field and view uniqueness index
combination
- [ ] implem strict update validator on view and view field
- [ ] dynamic cache invalidation post run
- [ ] Add coverage to successful and failing view field operations
- [ ] error formatting summary computation
- [ ] extract types out of the workspace entity builder
## Some vision
Currently flat field metadata maps is nested in the flat object metadata
maps, making its build nested too. ( not extending the new generic
builder )
We will refactor this part for both to be stored extra flat such as the
other existing flat entities.
It will require a small refactor to the generic builder that will not
only have impact on the currently built flat entity optimistic cache but
to an other one ( for example when building a create object action it
will also have an impact flat field maps )
Paul Rastoin