complete first version of main proccess

installations/admin.py

@@ -0,0 +1,39 @@
+from django.contrib import admin
+from .models import InstallationAssignment, InstallationReport, InstallationPhoto, InstallationItemChange
+
+
+@admin.register(InstallationAssignment)
+class InstallationAssignmentAdmin(admin.ModelAdmin):
+    list_display = ('process_instance', 'installer', 'scheduled_date', 'created')
+    search_fields = ('process_instance__code', 'installer__username', 'installer__first_name', 'installer__last_name')
+    list_filter = ('scheduled_date',)
+
+
+class InstallationPhotoInline(admin.TabularInline):
+    model = InstallationPhoto
+    extra = 0
+
+
+class InstallationItemChangeInline(admin.TabularInline):
+    model = InstallationItemChange
+    extra = 0
+
+
+@admin.register(InstallationReport)
+class InstallationReportAdmin(admin.ModelAdmin):
+    list_display = ('assignment', 'visited_date', 'new_water_meter_serial', 'seal_number', 'is_meter_suspicious', 'approved', 'created')
+    list_filter = ('is_meter_suspicious', 'approved', 'visited_date')
+    search_fields = ('assignment__process_instance__code', 'new_water_meter_serial', 'seal_number')
+    inlines = [InstallationPhotoInline, InstallationItemChangeInline]
+
+
+@admin.register(InstallationPhoto)
+class InstallationPhotoAdmin(admin.ModelAdmin):
+    list_display = ('report', 'created')
+
+
+@admin.register(InstallationItemChange)
+class InstallationItemChangeAdmin(admin.ModelAdmin):
+    list_display = ('report', 'item', 'change_type', 'quantity', 'unit_price', 'total_price', 'created')
+    list_filter = ('change_type',)
+