# `PhoenixKit.Migrations.Postgres.V11`
[🔗](https://github.com/BeamLabEU/phoenix_kit/blob/v1.7.165/lib/phoenix_kit/migrations/postgres/v11.ex#L1)

PhoenixKit V11 Migration: Per-User Timezone Settings

This migration adds individual timezone preferences for each user, separate from
the global system timezone setting. This allows personalized date/time formatting
in admin interfaces and user experiences.

## Changes

### User Timezone Column
- Adds user_timezone column to phoenix_kit_users table
- Stores timezone offset as string (e.g., "-5", "0", "+8")
- Nullable field with fallback to system timezone setting
- Validates timezone range (-12 to +12)

### New Features
- **Personal Timezone Preferences**: Each user can set their own timezone
- **Admin Dashboard Enhancement**: Dates formatted per user's timezone
- **Fallback System**: User timezone → System timezone → UTC
- **Backward Compatible**: Existing users default to system timezone
- **Settings Integration**: Seamless integration with existing settings UI

## PostgreSQL Support
- Supports PostgreSQL prefix for schema isolation
- Uses string type for timezone offset storage (consistent with global setting)
- No additional indexes needed (lightweight personal preference)
- Safe nullable field addition (no data migration required)

# `down`

Rollback the V11 migration.

# `up`

Run the V11 migration to add per-user timezone settings.

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*Consult [api-reference.md](api-reference.md) for complete listing*