Feauture/add project filters

src/backend/api/v1/projects/filters.py

 level = filters.MultipleChoiceFilter(choices=LEVEL_CHOICES) 
 skill = filters.ModelMultipleChoiceFilter(queryset=Skill.objects.all()) 
 level = filters.MultipleChoiceFilter(choices=LEVEL_CHOICES) 
@@ -0,0 +1,42 @@
+from django_filters.rest_framework import FilterSet
+from django_filters import filters
+
+from apps.general.constants import LEVEL_CHOICES
+from apps.general.models import Skill
+from apps.project.constants import (
+    BUSYNESS_CHOICES,
+    STATUS_CHOICES,
+    DIRECTION_CHOICES,
+)
+from apps.project.models import Project
+
+
+class ProjectFilter(FilterSet):
+    """
+    Класс для фильтрации проектов по имени, дате начала, дате конца, занятости в часах в неделю, статусу набора
+    участников, статусу проекта, направлению разработки, навыкам и уровню
+    """
+
+    name = filters.CharFilter(lookup_expr="icontains")
+    started = filters.DateFromToRangeFilter()
+    ended = filters.DateFromToRangeFilter()
+    busyness = filters.MultipleChoiceFilter(choices=BUSYNESS_CHOICES)
+    recruitment_status = filters.BooleanFilter()
+    status = filters.MultipleChoiceFilter(choices=STATUS_CHOICES)
+    direction = filters.MultipleChoiceFilter(choices=DIRECTION_CHOICES)
+    skill = filters.ModelMultipleChoiceFilter(queryset=Skill.objects.all())
+    level = filters.MultipleChoiceFilter(choices=LEVEL_CHOICES)
+
+    class Meta:
+        model = Project
+        fields = (
+            "name",
+            "started",
+            "ended",
+            "busyness",
+            "recruitment_status",
+            "status",
+            "direction",
+            "skill",
+            "level",
+        )

src/backend/api/v1/projects/views.py

@@ -1,11 +1,12 @@
 from django.db.models import Prefetch
+from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework import mixins
 from rest_framework.permissions import AllowAny, IsAuthenticatedOrReadOnly
 from rest_framework.viewsets import GenericViewSet, ModelViewSet
 
-from apps.general.models import Skill
 from apps.project.models import Project, ProjectSpecialist
 
+from .filters import ProjectFilter
 from .constants import PROJECT_PREVIEW_MAIN_FIELDS
 from .paginations import ProjectPagination, ProjectPreviewMainPagination
 from .serializers import ProjectPreviewMainSerializer, ProjectSerializer
@@ -29,6 +30,8 @@ class ProjectViewSet(ModelViewSet):
     permission_classes = (IsAuthenticatedOrReadOnly,)
     serializer_class = ProjectSerializer
     pagination_class = ProjectPagination
+    filter_backends = (DjangoFilterBackend,)
+    filterset_class = ProjectFilter
 
 
 class ProjectPreviewMainViewSet(mixins.ListModelMixin, GenericViewSet):

src/backend/apps/project/models.py

 ) 
 skills = models.ManyToManyField( 
     Skill, related_name="projects", verbose_name="Проекты" 
 ) 
 level = models.PositiveSmallIntegerField( 
     verbose_name="Уровень", choices=LEVEL_CHOICES, null=True, blank=True 
 ) 
@@ -99,6 +99,12 @@ class Project(CreatedModifiedFields):
         related_name="projects_participated",
         blank=True,
     )
+    skills = models.ManyToManyField(
+        Skill, related_name="projects", verbose_name="Проекты"
+    )
+    level = models.PositiveSmallIntegerField(
+        verbose_name="Уровень", choices=LEVEL_CHOICES, null=True, blank=True
+    )
 
     class Meta:
         verbose_name = "Проект"