Created manager methods for getting a list of years or months

[pcdenotes.git] / notes / models.py

diff --git a/notes/models.py b/notes/models.py
index 65069db2de4b0a29373ea5b0bc9b7417243eca75..2957cb8470891280a3bb4e0053433740f1022a2c 100644 (file)
--- a/notes/models.py
+++ b/notes/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.db.models.functions import ExtractYear, ExtractMonth
 from django.contrib.auth.models import User
 from django.urls import reverse
 
@@ -7,6 +8,22 @@ from django.urls import reverse
 NOTE_STATUS = ((0, "Draft"),
                (1, "Published"))            
 
+class NoteQuerySet(models.QuerySet):
+    pass
+
+class NoteManager(models.Manager):
+    def per_year(self, year):
+        return super().get_queryset().filter(status=1, created_at__year=year)
+
+    def per_month(self, year, month):
+        return super().get_queryset().filter(status=1, created_at__year=year, created_at__month=month)
+
+    def years(self):
+        return super().get_queryset().filter(status=1).annotate(created_year=ExtractYear('created_at')).values_list('created_year', flat=True).distinct().order_by('created_year')
+
+    def months(self, year):
+        return self.per_year(year).annotate(created_month=ExtractMonth('created_at')).values_list('created_month', flat=True).distinct().order_by('created_month')
+
 class Note(models.Model):
     title = models.CharField(max_length=250)
     slug = models.SlugField(max_length=250, unique=True)
@@ -17,6 +34,8 @@ class Note(models.Model):
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 
+    objects = NoteManager()
+
     class Meta:
         ordering = ['-created_at']
 
@@ -30,4 +49,4 @@ class Note(models.Model):
         return self.status == 0
 
     def is_published(self):
-        return self.status == 1
+        return self.status == 1
\ No newline at end of file