Models & ORM
Snippets for Django Models and ORM, covering field definitions, relationships, queries, and optimizations. Learn to build efficient database-driven applications using Django's ORM layer.
Define a Simple Django Model
Create a basic Django model with common field types.
Add Choices to a Model Field
Use choices to restrict valid values for a model field.
Set Default Value in Model Field
Provide default values for Django model fields.
ForeignKey Relationship Example
Define a one-to-many relationship using ForeignKey.
ManyToMany Relationship Example
Define many-to-many relationships between models.
OneToOne Relationship Example
Link models with a one-to-one relationship.
Auto Timestamp Fields
Use auto_now and auto_now_add for timestamps.
Custom Model Manager
Create a custom model manager to add extra queryset methods.
Using QuerySet filter()
Filter database records using QuerySet filter().
Using QuerySet exclude()
Exclude records from queries with exclude().
Using QuerySet order_by()
Sort database records using order_by().
Using QuerySet values()
Return dictionaries of field values using values().
Using QuerySet annotate()
Add calculated fields to queries with annotate().
Using QuerySet aggregate()
Summarize data using aggregate() in Django.
Using select_related for Optimization
Optimize queries with select_related to reduce database hits.
Using prefetch_related for Optimization
Fetch related objects efficiently with prefetch_related.
Bulk Create with bulk_create()
Insert multiple objects at once using bulk_create().
Bulk Update with bulk_update()
Update multiple records in one query using bulk_update().
Model Meta Options
Customize model behavior using Meta options.