Add admin pages for Participation app

apps/participation/admin.py

@@ -0,0 +1,46 @@
+from django.contrib import admin
+from django.utils.translation import gettext_lazy as _
+
+from .models import Participation, Phase, Question, Team, Video
+
+
+@admin.register(Team)
+class TeamAdmin(admin.ModelAdmin):
+    list_display = ('name', 'trigram', 'problem', 'valid',)
+    search_fields = ('name', 'trigram',)
+    list_filter = ('participation__problem', 'participation__valid',)
+
+    def problem(self, team):
+        return team.participation.get_problem_display()
+
+    problem.short_description = _('problem number')
+
+    def valid(self, team):
+        return team.participation.valid
+
+    valid.short_description = _('valid')
+
+
+@admin.register(Participation)
+class ParticipationAdmin(admin.ModelAdmin):
+    list_display = ('team', 'problem', 'valid',)
+    search_fields = ('team__name', 'team__trigram',)
+    list_filter = ('problem', 'valid',)
+
+
+@admin.register(Video)
+class VideoAdmin(admin.ModelAdmin):
+    list_display = ('participation', 'link',)
+    search_fields = ('participation__team__name', 'participation__team__trigram', 'link',)
+
+
+@admin.register(Question)
+class QuestionAdmin(admin.ModelAdmin):
+    list_display = ('participation', 'question',)
+    search_fields = ('participation__team__name', 'participation__team__trigram', 'question',)
+
+
+@admin.register(Phase)
+class PhaseAdmin(admin.ModelAdmin):
+    list_display = ('phase_number', 'start', 'end',)
+    ordering = ('phase_number', 'start',)