dynamic mixin search for all apis

apps/core/mixins/search_mixin.py

@@ -0,0 +1,29 @@
+from apps.core.services.filter.search import DynamicSearchService
+
+
+class DynamicSearchMixin:
+    """ search query sets with introduced fields in view set """
+
+    def get_search_fields(self):
+        return getattr(self, "search_fields", [])
+
+    def get_date_field(self):
+        return getattr(self, "date_field", "create_date")
+
+    def filter_queryset(self, queryset):
+        queryset = super().filter_queryset(queryset)  # noqa
+
+        q = self.request.query_params.get("search")  # noqa
+        start = self.request.query_params.get("start")  # noqa
+        end = self.request.query_params.get("end")  # noqa
+        search_fields = self.get_search_fields()
+        date_field = self.get_date_field()
+
+        return DynamicSearchService(
+            queryset=queryset,
+            query_string=q,
+            search_fields=search_fields,
+            start=start,
+            end=end,
+            date_field=date_field
+        ).apply()

apps/core/services/filter/search.py

@@ -0,0 +1,40 @@
+from django.db.models import Q
+from django.db.models.functions import TruncDate
+
+
+class DynamicSearchService:
+    def __init__(self, queryset, query_string: str = "", search_fields: list[str] = None,
+                 start: str = None, end: str = None, date_field: str = "create_date"):
+        self.queryset = queryset
+        self.query = (query_string or "").strip()
+        self.fields = search_fields or []
+        self.start = start
+        self.end = end
+        self.date_field = date_field
+
+    def apply(self):
+        qs = self.queryset
+
+        if self.query and self.fields:
+            keywords = [k.strip() for k in self.query.split(",") if k.strip()]
+            q_obj = Q()
+            for kw in keywords:
+                for field in self.fields:
+                    q_obj |= Q(**{f"{field}__icontains": kw})  # noqa
+            qs = qs.filter(q_obj).distinct()
+
+        if self.start or self.end:
+            qs = qs.annotate(date_only=TruncDate(self.date_field))
+            if self.start:
+                try:
+                    qs = qs.filter(date_only__gte=self.start)
+                except ValueError:
+                    pass  # or log
+
+            if self.end:
+                try:
+                    qs = qs.filter(date_only__lte=self.end)
+                except ValueError:
+                    pass  # or log
+
+        return qs