[英]Role based authorization in flask-login
我需要在現有的 Flask 應用程序中引入基於角色的授權。 因此,例如,我不能僅將當前使用的燒瓶登錄 package 與燒瓶用戶交換。 盡管如此,我必須將對某些端點的訪問限制為“管理員”用戶,而無需重建整個代碼庫。
我想出了一個這樣的裝飾器:
def admin_required(func):
"""
Modified login_required decorator to restrict access to admin group.
"""
@wraps(func)
def decorated_view(*args, **kwargs):
if current_user.group != 0: # zero means admin, one and up are other groups
flash("You don't have permission to access this resource.", "warning")
return redirect(url_for("main.home"))
return func(*args, **kwargs)
return decorated_view
我將它與原始login_required
裝飾器一起使用,如下所示:
@app.route("/admin-restricted"):
@login_required
@admin_required
def admin_resource():
return "Hello admin"
一切都按預期工作,但我有兩個擔憂:
處理基於角色的權限的更常見方法是使用 Flask Principal。
在主應用程序中:
from flask_principal import Principal
# load the extension
principals = Principal(app)
@identity_loaded.connect_via(app)
def on_identity_loaded(sender, identity):
# Set the identity user object
identity.user = current_user
# Add the UserNeed to the identity
if hasattr(current_user, 'employee_id'):
identity.provides.add(UserNeed(current_user.employee_id))
# Assuming the User model has a list of roles, update the
# identity with the roles that the user provides
if hasattr(current_user, 'position'):
# for role in current_user.role:
identity.provides.add(RoleNeed(str(current_user.position)))
admin_permission = Permission(RoleNeed('admin'))
然后在路線中:
@app.route("/admin-restricted"):
@login_required
@admin_permission.require(http_exception=403)
def admin_resource():
return "Hello admin"
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