refactor: pydantic v2 deprecations (#1074)

Co-authored-by: sujanadh <sujanadh07@gmail.com>

src/backend/app/projects/project_schemas.py

@@ -22,7 +22,7 @@
 from typing import List, Optional
 
 from geojson_pydantic import Feature as GeojsonFeature
-from pydantic import BaseModel, validator
+from pydantic import BaseModel, field_validator
 
 from app.db import db_models
 from app.models.enums import ProjectPriority, ProjectStatus, TaskSplitType
@@ -161,12 +161,12 @@ class ProjectDashboard(BaseModel):
     created: datetime
     last_active: Optional[str] = None
 
-    @validator("created", pre=False, always=True)
+    @field_validator("created", mode="before")
     def get_created(cls, value, values):
         date = value.strftime("%d %b %Y")
         return date
 
-    @validator("last_active", pre=False, always=True)
+    @field_validator("last_active", mode="before")
     def get_last_active(cls, value, values):
         if value is None:
             return None

src/backend/app/tasks/tasks_schemas.py

@@ -24,7 +24,7 @@
 
 from geojson_pydantic import Feature
 from loguru import logger as log
-from pydantic import BaseModel, ConfigDict, Field, ValidationInfo, validator
+from pydantic import BaseModel, ConfigDict, Field, ValidationInfo
 from pydantic.functional_validators import field_validator
 
 from app.db.postgis_utils import geometry_to_geojson, get_centroid
@@ -71,7 +71,7 @@ class TaskBase(BaseModel):
     locked_by_username: Optional[str] = None
     task_history: Optional[List[TaskHistoryBase]] = None
 
-    @validator("task_status", pre=False, always=True)
+    @field_validator("task_status", mode="before")
     def get_enum_name(cls, value, values):
         if isinstance(value, int):
             try: