fix: Add task log constraint (#713)

* Revert "fix: add unique constraint in task_logs for expense_group, add interval for next run (#690)"

This reverts commit d1d12fd.

* fix: add unique constraint in task_log

apps/tasks/migrations/0013_alter_tasklog_expense_group.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.14 on 2025-01-03 08:29
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fyle', '0040_expense_masked_corporate_card_number'),
+        ('tasks', '0012_auto_20241127_0730'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tasklog',
+            name='expense_group',
+            field=models.ForeignKey(help_text='Reference to Expense group', null=True, on_delete=django.db.models.deletion.PROTECT, to='fyle.expensegroup', unique=True),
+        ),
+    ]

apps/tasks/models.py

@@ -20,7 +20,7 @@ class TaskLog(models.Model):
     workspace = models.ForeignKey(Workspace, on_delete=models.PROTECT, help_text='Reference to Workspace model')
     type = models.CharField(max_length=50, help_text='Task type (FETCH_EXPENSES / CREATE_BILL / CREATE_CHECK)')
     task_id = models.CharField(max_length=255, null=True, help_text='Django Q task reference')
-    expense_group = models.ForeignKey(ExpenseGroup, on_delete=models.PROTECT, null=True, help_text='Reference to Expense group')
+    expense_group = models.ForeignKey(ExpenseGroup, on_delete=models.PROTECT, null=True, help_text='Reference to Expense group', unique=True)
     bill = models.ForeignKey(Bill, on_delete=models.PROTECT, help_text='Reference to Bill', null=True)
     cheque = models.ForeignKey(Cheque, on_delete=models.PROTECT, help_text='Reference to Cheque', null=True)
     journal_entry = models.ForeignKey(JournalEntry, on_delete=models.PROTECT, help_text='Reference to journal_entry', null=True)