feat: add ticket domain models
This commit is contained in:
hailin
1
backend/apps/tickets/__init__.py
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1
backend/apps/tickets/__init__.py
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6
backend/apps/tickets/apps.py
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6
backend/apps/tickets/apps.py
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from django.apps import AppConfig
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class TicketsConfig(AppConfig):
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default_auto_field = "django.db.models.BigAutoField"
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name = "apps.tickets"
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255
backend/apps/tickets/migrations/0001_initial.py
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255
backend/apps/tickets/migrations/0001_initial.py
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# Generated by Django 5.2.15 on 2026-06-30 10:31
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import django.db.models.deletion
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from django.conf import settings
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from django.db import migrations, models
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class Migration(migrations.Migration):
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initial = True
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dependencies = [
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migrations.swappable_dependency(settings.AUTH_USER_MODEL),
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]
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operations = [
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migrations.CreateModel(
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name="Ticket",
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fields=[
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(
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"id",
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models.BigAutoField(
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auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
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),
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),
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("ticket_no", models.CharField(max_length=32, unique=True)),
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("title", models.CharField(max_length=200)),
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("description", models.TextField()),
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(
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"status",
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models.CharField(
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choices=[
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("pending_info", "Pending info"),
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("pending", "Pending"),
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("in_progress", "In progress"),
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("pending_confirm", "Pending confirm"),
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("resolved", "Resolved"),
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("closed", "Closed"),
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],
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default="pending",
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max_length=32,
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),
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),
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(
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"priority",
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models.CharField(
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choices=[
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("low", "Low"),
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("medium", "Medium"),
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("high", "High"),
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("urgent", "Urgent"),
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],
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default="medium",
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max_length=20,
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),
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),
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("impact_scope", models.CharField(blank=True, max_length=80)),
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("environment", models.CharField(blank=True, max_length=80)),
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("related_system", models.CharField(blank=True, max_length=120)),
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("created_at", models.DateTimeField(auto_now_add=True)),
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("updated_at", models.DateTimeField(auto_now=True)),
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("resolved_at", models.DateTimeField(blank=True, null=True)),
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("closed_at", models.DateTimeField(blank=True, null=True)),
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(
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"assignee",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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related_name="assigned_tickets",
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to=settings.AUTH_USER_MODEL,
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),
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),
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(
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"created_by",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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related_name="created_tickets",
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to=settings.AUTH_USER_MODEL,
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),
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),
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(
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"requester",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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related_name="requested_tickets",
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to=settings.AUTH_USER_MODEL,
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),
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),
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],
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options={
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"ordering": ["-created_at"],
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},
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),
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migrations.CreateModel(
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name="TicketAttachment",
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fields=[
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(
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"id",
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models.BigAutoField(
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auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
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),
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),
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("file_name", models.CharField(max_length=255)),
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("file_type", models.CharField(blank=True, max_length=80)),
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("mime_type", models.CharField(blank=True, max_length=120)),
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("file_size", models.PositiveBigIntegerField(default=0)),
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("storage_path", models.CharField(max_length=500)),
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("ocr_text", models.TextField(blank=True)),
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("parsed_text", models.TextField(blank=True)),
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("created_at", models.DateTimeField(auto_now_add=True)),
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(
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"created_by",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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to=settings.AUTH_USER_MODEL,
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),
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),
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(
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"ticket",
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models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="attachments",
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to="tickets.ticket",
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),
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),
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],
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),
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migrations.CreateModel(
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name="TicketCategory",
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fields=[
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(
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"id",
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models.BigAutoField(
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auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
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),
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),
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("name", models.CharField(max_length=120)),
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("code", models.CharField(max_length=80, unique=True)),
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("description", models.TextField(blank=True)),
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("enabled", models.BooleanField(default=True)),
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("sort_order", models.PositiveIntegerField(default=0)),
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(
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"parent",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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to="tickets.ticketcategory",
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),
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),
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],
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options={
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"ordering": ["sort_order", "name"],
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},
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),
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migrations.AddField(
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model_name="ticket",
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name="category",
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field=models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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to="tickets.ticketcategory",
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),
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),
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migrations.CreateModel(
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name="TicketComment",
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fields=[
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(
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"id",
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models.BigAutoField(
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auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
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),
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),
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("content", models.TextField()),
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("comment_type", models.CharField(default="user", max_length=40)),
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("visibility", models.CharField(default="internal", max_length=40)),
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("created_at", models.DateTimeField(auto_now_add=True)),
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(
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"created_by",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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to=settings.AUTH_USER_MODEL,
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),
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),
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(
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"ticket",
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models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="comments",
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to="tickets.ticket",
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),
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),
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],
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options={
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"ordering": ["created_at"],
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},
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),
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migrations.CreateModel(
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name="TicketEvent",
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fields=[
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(
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"id",
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models.BigAutoField(
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auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
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),
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),
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("event_type", models.CharField(max_length=80)),
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("from_value", models.JSONField(blank=True, default=dict)),
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("to_value", models.JSONField(blank=True, default=dict)),
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("remark", models.TextField(blank=True)),
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("created_at", models.DateTimeField(auto_now_add=True)),
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(
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"operator",
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models.ForeignKey(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.SET_NULL,
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to=settings.AUTH_USER_MODEL,
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),
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),
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(
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"ticket",
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models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="events",
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to="tickets.ticket",
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),
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),
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],
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options={
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"ordering": ["created_at"],
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},
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),
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migrations.AddIndex(
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model_name="ticket",
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index=models.Index(fields=["ticket_no"], name="tickets_tic_ticket__c7390a_idx"),
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),
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migrations.AddIndex(
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model_name="ticket",
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index=models.Index(fields=["status", "priority"], name="tickets_tic_status_b256f6_idx"),
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),
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migrations.AddIndex(
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model_name="ticket",
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index=models.Index(fields=["created_at"], name="tickets_tic_created_5dd600_idx"),
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),
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]
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1
backend/apps/tickets/migrations/__init__.py
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1
backend/apps/tickets/migrations/__init__.py
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@@ -0,0 +1 @@
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142
backend/apps/tickets/models.py
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142
backend/apps/tickets/models.py
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@@ -0,0 +1,142 @@
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from django.conf import settings
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from django.db import models
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class TicketStatus(models.TextChoices):
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PENDING_INFO = "pending_info", "Pending info"
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PENDING = "pending", "Pending"
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IN_PROGRESS = "in_progress", "In progress"
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PENDING_CONFIRM = "pending_confirm", "Pending confirm"
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RESOLVED = "resolved", "Resolved"
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CLOSED = "closed", "Closed"
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class TicketPriority(models.TextChoices):
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LOW = "low", "Low"
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MEDIUM = "medium", "Medium"
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HIGH = "high", "High"
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URGENT = "urgent", "Urgent"
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class TicketCategory(models.Model):
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parent = models.ForeignKey("self", null=True, blank=True, on_delete=models.SET_NULL)
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name = models.CharField(max_length=120)
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code = models.CharField(max_length=80, unique=True)
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description = models.TextField(blank=True)
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enabled = models.BooleanField(default=True)
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sort_order = models.PositiveIntegerField(default=0)
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class Meta:
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ordering = ["sort_order", "name"]
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def __str__(self) -> str:
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return self.name
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class Ticket(models.Model):
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ticket_no = models.CharField(max_length=32, unique=True)
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title = models.CharField(max_length=200)
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description = models.TextField()
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category = models.ForeignKey(TicketCategory, null=True, blank=True, on_delete=models.SET_NULL)
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status = models.CharField(
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max_length=32,
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choices=TicketStatus.choices,
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default=TicketStatus.PENDING,
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)
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priority = models.CharField(
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max_length=20,
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choices=TicketPriority.choices,
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default=TicketPriority.MEDIUM,
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)
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impact_scope = models.CharField(max_length=80, blank=True)
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environment = models.CharField(max_length=80, blank=True)
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related_system = models.CharField(max_length=120, blank=True)
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requester = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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related_name="requested_tickets",
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)
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assignee = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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related_name="assigned_tickets",
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)
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created_by = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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related_name="created_tickets",
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)
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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resolved_at = models.DateTimeField(null=True, blank=True)
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closed_at = models.DateTimeField(null=True, blank=True)
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class Meta:
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ordering = ["-created_at"]
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indexes = [
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models.Index(fields=["ticket_no"]),
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models.Index(fields=["status", "priority"]),
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models.Index(fields=["created_at"]),
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]
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def __str__(self) -> str:
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return f"{self.ticket_no} {self.title}"
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class TicketComment(models.Model):
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ticket = models.ForeignKey(Ticket, on_delete=models.CASCADE, related_name="comments")
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content = models.TextField()
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comment_type = models.CharField(max_length=40, default="user")
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visibility = models.CharField(max_length=40, default="internal")
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created_by = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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)
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created_at = models.DateTimeField(auto_now_add=True)
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class Meta:
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ordering = ["created_at"]
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class TicketAttachment(models.Model):
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ticket = models.ForeignKey(Ticket, on_delete=models.CASCADE, related_name="attachments")
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file_name = models.CharField(max_length=255)
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file_type = models.CharField(max_length=80, blank=True)
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mime_type = models.CharField(max_length=120, blank=True)
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file_size = models.PositiveBigIntegerField(default=0)
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storage_path = models.CharField(max_length=500)
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ocr_text = models.TextField(blank=True)
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parsed_text = models.TextField(blank=True)
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created_by = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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)
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created_at = models.DateTimeField(auto_now_add=True)
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class TicketEvent(models.Model):
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ticket = models.ForeignKey(Ticket, on_delete=models.CASCADE, related_name="events")
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event_type = models.CharField(max_length=80)
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from_value = models.JSONField(default=dict, blank=True)
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to_value = models.JSONField(default=dict, blank=True)
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operator = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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null=True,
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blank=True,
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on_delete=models.SET_NULL,
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)
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remark = models.TextField(blank=True)
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created_at = models.DateTimeField(auto_now_add=True)
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class Meta:
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ordering = ["created_at"]
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52
backend/apps/tickets/services.py
Normal file
52
backend/apps/tickets/services.py
Normal file
@@ -0,0 +1,52 @@
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from django.utils import timezone
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from apps.audit.models import OperationAuditLog
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from apps.tickets.models import Ticket, TicketEvent
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class TicketStatusError(ValueError):
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pass
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ALLOWED_TRANSITIONS: dict[str, set[str]] = {
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"pending_info": {"pending", "closed"},
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"pending": {"in_progress", "closed"},
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"in_progress": {"pending_confirm", "resolved", "closed"},
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"pending_confirm": {"resolved", "in_progress", "closed"},
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"resolved": {"closed"},
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"closed": set(),
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}
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def validate_status_transition(from_status: str, to_status: str) -> None:
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if to_status not in ALLOWED_TRANSITIONS.get(from_status, set()):
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raise TicketStatusError(f"Invalid ticket status transition: {from_status} -> {to_status}")
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def transition_ticket(ticket: Ticket, to_status: str, remark: str = "", operator=None) -> Ticket:
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from_status = ticket.status
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validate_status_transition(from_status, to_status)
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ticket.status = to_status
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if to_status == "resolved":
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ticket.resolved_at = timezone.now()
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if to_status == "closed":
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ticket.closed_at = timezone.now()
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ticket.save(update_fields=["status", "resolved_at", "closed_at", "updated_at"])
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TicketEvent.objects.create(
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ticket=ticket,
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event_type="status_change",
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from_value={"status": from_status},
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to_value={"status": to_status},
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operator=operator,
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remark=remark,
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)
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OperationAuditLog.objects.create(
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user=operator,
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module="tickets",
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action="status_transition",
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target_type="ticket",
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target_id=str(ticket.id),
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result="success",
|
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request_snapshot={"from": from_status, "to": to_status, "remark": remark},
|
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)
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return ticket
|
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1
backend/apps/tickets/tests/__init__.py
Normal file
1
backend/apps/tickets/tests/__init__.py
Normal file
@@ -0,0 +1 @@
|
||||
|
||||
12
backend/apps/tickets/tests/test_ticket_status.py
Normal file
12
backend/apps/tickets/tests/test_ticket_status.py
Normal file
@@ -0,0 +1,12 @@
|
||||
import pytest
|
||||
|
||||
from apps.tickets.services import TicketStatusError, validate_status_transition
|
||||
|
||||
|
||||
def test_pending_ticket_can_move_to_in_progress():
|
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validate_status_transition("pending", "in_progress")
|
||||
|
||||
|
||||
def test_resolved_ticket_cannot_move_back_to_in_progress():
|
||||
with pytest.raises(TicketStatusError, match="resolved -> in_progress"):
|
||||
validate_status_transition("resolved", "in_progress")
|
||||
Reference in New Issue
Block a user