Class: CanTango::PermissionEngine::Evaluator

Inherits:
Object
  • Object
show all
Includes:
Rules
Defined in:
lib/cantango/permission_engine/evaluator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Rules::Dsl

included, #scope

Constructor Details

#initialize(ability, rule) ⇒ Evaluator

Returns a new instance of Evaluator.



8
9
10
11
12
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 8

def initialize ability, rule
  @ability = ability
  @rule = rule
  safe_rules!
end

Instance Attribute Details

#ability ⇒ Object (readonly)

Returns the value of attribute ability.



4
5
6
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 4

def ability
  @ability
end

#rule ⇒ Object (readonly)

Returns the value of attribute rule.



4
5
6
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 4

def rule
  @rule
end

Instance Method Details

#evaluate!(user) ⇒ Object 



14
15
16
17
18
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 14

def evaluate! user
  @user = user
  instance_eval rule.can if rule.can?
  instance_eval rule.cannot if rule.cannot?
end

#rules ⇒ Object 



20
21
22
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 20

def rules
  ability.send :rules
end

#safe_rules! ⇒ Object 



28
29
30
31
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 28

def safe_rules!
  rule.can.gsub!(/(User|UserAccount)/,'::\1') if rule.can?
  rule.cannot.gsub!(/(User|UserAccount)/,'::\1') if rule.cannot?
end

#user ⇒ Object 



24
25
26
 
# File 'lib/cantango/permission_engine/evaluator.rb', line 24

def user
  @user
end