schedule & diffusions check/update + cleanup Schedule methods

aircox/admin/episode.py

@@ -1,7 +1,7 @@
 from copy import copy
 
-from django import forms
 from django.contrib import admin
+from django.forms import ModelForm
 from django.utils.translation import gettext as _
 
 from ..models import Episode, Diffusion
@@ -11,7 +11,8 @@ from .sound import SoundInline, TrackInline
 
 
 class DiffusionBaseAdmin:
-    fields = ['type', 'start', 'end']
+    fields = ('type', 'start', 'end', 'schedule')
+    readonly_fields = ('schedule',)
 
     def get_readonly_fields(self, request, obj=None):
         fields = super().get_readonly_fields(request, obj)
@@ -35,7 +36,8 @@ class DiffusionAdmin(DiffusionBaseAdmin, admin.ModelAdmin):
     list_editable = ('type',)
     ordering = ('-start', 'id')
 
-    fields = ['type', 'start', 'end', 'initial', 'program']
+    fields = ('type', 'start', 'end', 'initial', 'program', 'schedule')
+    readonly_fields = ('schedule',)
 
 
 class DiffusionInline(DiffusionBaseAdmin, admin.TabularInline):
@@ -47,7 +49,7 @@ class DiffusionInline(DiffusionBaseAdmin, admin.TabularInline):
         return request.user.has_perm('aircox_program.scheduling')
 
 
-class EpisodeAdminForm(forms.ModelForm):
+class EpisodeAdminForm(ModelForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields['parent'].required = True

aircox/admin/program.py

@@ -1,20 +1,33 @@
 from copy import copy
 
 from django.contrib import admin
+from django.forms import ModelForm
 from django.utils.translation import gettext_lazy as _
 
 from ..models import Program, Schedule, Stream
 from .page import PageAdmin
 
 
+# In order to simplify schedule_post_save algorithm, an existing schedule can't
+# update the following fields: "frequency", "date"
+class ScheduleInlineForm(ModelForm):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        if self.initial:
+            self.fields['date'].disabled = True
+            self.fields['frequency'].disabled = True
+
+
 class ScheduleInline(admin.TabularInline):
     model = Schedule
+    form = ScheduleInlineForm
+    readonly_fields = ('timezone',)
     extra = 1
 
 
 class StreamInline(admin.TabularInline):
-    fields = ['delay', 'begin', 'end']
     model = Stream
+    fields = ['delay', 'begin', 'end']
     extra = 1
 
 
@@ -71,4 +84,3 @@ class StreamAdmin(admin.ModelAdmin):
     list_display = ('id', 'program', 'delay', 'begin', 'end')
 
 
-