contest and contest_problems api.

add ordering for contest and submission models

problem/serializers.py

@@ -4,6 +4,7 @@ from judge.languages import language_names, spj_language_names
 from utils.api import DateTimeTZField, UsernameSerializer, serializers
 
 from .models import Problem, ProblemRuleType, ProblemTag
+from .models import ContestProblem
 
 
 class TestCaseUploadForm(forms.Form):
@@ -85,3 +86,17 @@ class ProblemSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Problem
+
+
+class ContestProblemSerializer(serializers.ModelSerializer):
+    samples = serializers.JSONField()
+    test_case_score = serializers.JSONField()
+    languages = serializers.JSONField()
+    template = serializers.JSONField()
+    tags = serializers.SlugRelatedField(many=True, slug_field="name", read_only=True)
+    create_time = DateTimeTZField()
+    last_update_time = DateTimeTZField()
+    created_by = UsernameSerializer()
+
+    class Meta:
+        model = ContestProblem

problem/urls/oj.py

@@ -1,8 +1,9 @@
 from django.conf.urls import url
 
-from ..views.oj import ProblemTagAPI, ProblemAPI
+from ..views.oj import ProblemTagAPI, ProblemAPI, ContestProblemAPI
 
 urlpatterns = [
     url(r"^problem/tags/?$", ProblemTagAPI.as_view(), name="problem_tag_list_api"),
     url(r"^problems/?$", ProblemAPI.as_view(), name="problem_list_api"),
+    url(r"^contest_problems/?$", ContestProblemAPI.as_view(), name="contest_problem_api"),
 ]

problem/views/oj.py

@@ -1,8 +1,9 @@
 from django.db.models import Q
 from utils.api import APIView
-
-from ..models import ProblemTag, Problem
+from account.decorators import login_required, check_contest_permission
+from ..models import ProblemTag, Problem, ContestProblem
 from ..serializers import ProblemSerializer, TagSerializer
+from ..serializers import ContestProblemSerializer
 
 
 class ProblemTagAPI(APIView):
@@ -42,3 +43,10 @@ class ProblemAPI(APIView):
             problems = problems.filter(difficulty=difficulty_rank)
 
         return self.success(self.paginate_data(request, problems, ProblemSerializer))
+
+
+class ContestProblemAPI(APIView):
+    @check_contest_permission
+    def get(self, request):
+        contest_problems = ContestProblem.objects.filter(contest=self.contest, visible=True)
+        return self.success(ContestProblemSerializer(contest_problems, many=True).data)