68 lines
3 KiB
Text
68 lines
3 KiB
Text
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ActsAsPermissible
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=================
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Source:
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http://github.com/NoamB/acts_as_permissible/tree/master
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More information at:
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http://github.com/NoamB/acts_as_permissible/wikis
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This plugin enables any activerecord model to have permissions.
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It provides a set of methods for querying the model's permissions.
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In addition, the plugin can generate roles support, which turns in into a full RBAC (Role Based Access Control) solution.
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Any model which includes the line "acts_as_permissible" can have permissions, and with roles support it can also have roles which in turn have their own permissions.
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Roles can also belong to roles, which creates a sort of inheritance hierarchy.
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When permissions are calculated, the model's permissions are merged with the model's role permissions (if any), which in turn are merged with the role's roles permissions, until a finite permissions hash is generated.
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In the case of identical keys, a false value overrides a true value, A true value overrides a nil value, and a nil value is false.
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Setup
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=====
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script/generate permissible <PermissionModelName> [RoleModelName]
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The role model name is optional. If you do not want the roles support generated, use the --skip-roles option.
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examples: script/generate permissible Permission Role
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script/generate permissible Permission Group
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script/generate permissible Allowance --skip-roles
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use --skip-migration if you don't want a migration created for the permissions model.
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use --rspec to force rspec tests installed (currenty these are the only ones available).
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Add any permissions you want to your permissions table.
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Add any roles you want to your roles table.
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Add user->role relationships in your roles_memberships table.
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Add role->role relationships in your roles_memberships table.
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Usage
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=====
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class User < Activerecord::Base
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acts_as_permissible
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end
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Now a user will have the following methods:
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@user.permissions_hash() # => {:view_something => true, :delete_something => false}
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@user.has_permission?("view_something") # => true
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@user.has_permission?("view_something", "delete_something") # => false
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@user.has_permission?("delete_something") # => false
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@user.has_permission?("create_something") # => false
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@user.permissions_hash() # => {:view_something => true, :delete_something => false}
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@user.permissions << Permission.new(:action => "new_thing", :granted => true)
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@user.permissions_hash() # => {:view_something => true, :delete_something => false}
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@user.reload_permissions!() # => {:view_something => true, :delete_something => false, :new_thing => true}
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@user.permissions_hash() # => {:view_something => true, :delete_something => false, :new_thing => true}
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# this is useful for getting the hash again into memory after the permissions table was updated.
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And with roles support:
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@user.in_role?("publisher") # => true
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@user.in_role?("publisher","advertiser") # => false
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@user.in_any_role?("publisher","advertiser") => true
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@user.full_permissions_hash() # will return a merged hash of user and roles permissions.
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Copyright (c) 2008 Noam Ben-Ari, released under the MIT license
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