Policy Storage

Casbin implements policy storage through adapters.

Cargando política desde un archivo .CSV

Loading from a CSV file is the standard approach. This method is straightforward for beginners and convenient when seeking help from the Casbin team.

Here's an example CSV file examples/rbac_policy.csv:

p, alice, data1, read
p, bob, data2, write
p, data2_admin, data2, read
p, data2_admin, data2, write
g, alice, data2_admin

nota

When CSV fields contain commas, wrap them in double quotes:

p, alice, "data1,data2", read    --correct
p, alice, data1,data2, read        --incorrect (the whole phrase "data1,data2" should be wrapped in double quotes)

When fields contain both commas and double quotes, wrap the field in double quotes and escape embedded quotes by doubling them:

p, alice, data, "r.act in (""get"", ""post"")"        --correct
p, alice, data, "r.act in ("get", "post")"            --incorrect (you should use "" to escape "")

Problema relacionado: casbin#886

API de Adaptador

Método	Tipo	Descripción
LoadPolicy()	básico	Cargar todas las reglas de política desde el almacenamiento
SavePolicy()	básico	Guardar todas las reglas de política en el almacenamiento
AddPolicy()	opcional	Añadir una regla de política al almacenamiento
RemovePolicy()	opcional	Eliminar una regla de política del almacenamiento
RemoveFilteredPolicy()	opcional	Eliminar reglas de política que coincidan con el filtro del almacenamiento

Formato de Almacenamiento de Base de Datos

Tu archivo de política

p, data2_admin, data2, read
p, data2_admin, data2, write
g, alice, admin

Estructura de base de datos correspondiente (como MySQL)

id	ptype	v0	v1	v2	v3	v4	v5
1	p	data2_admin	data2	read
2	p	data2_admin	data2	write
3	g	alice	admin

Significado de cada columna

• id: Database primary key, not part of the Casbin policy. Generation method depends on the adapter implementation.

• ptype: Corresponds to p, g, g2, etc.

• v0-v5: Generic column names that map to policy CSV values from left to right. The number of columns depends on your policy definition. Most adapters implement 6 columns, though theoretically unlimited columns are possible. Submit an issue to the adapter repository if you need more columns.

Detalles del Adaptador

For more information about the adapter API and database structure design, see /docs/adapters.