Class: Configurable

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/configurable.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.[](key) ⇒ Object 



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'app/models/configurable.rb', line 39

def self.[](key)
  return parse_value key, defaults[key][:default] unless table_exists?

  value = false
  found = false
  database_finder = lambda do
    config = find_by_name(key)
    found = !config.nil?
    value = config.try(:value)
  end

  if ConfigurableEngine::Engine.config.use_cache
    found = Rails.cache.exist?(cache_key(key))
    if found
      value = Rails.cache.fetch(cache_key(key))
    else
      database_finder.call
      Rails.cache.write cache_key(key), value if found
    end
  else
    database_finder.call
  end

  if found
    value
  else
    parse_value(key, defaults[key][:default]).tap do |val|
      Rails.cache.write cache_key(key), val if ConfigurableEngine::Engine.config.use_cache
    end
  end
end

.[]=(key, value) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
 
# File 'app/models/configurable.rb', line 23

def self.[]=(key, value)
  exisiting = find_by_name(key)
  if exisiting
    exisiting.update_attribute(:value, value)
  else
    create do |c|
      c.name = key.to_s
      c.value = Configurable.value_for_serialization key, value
    end
  end
end

.cache_key(key) ⇒ Object 



35
36
37
 
# File 'app/models/configurable.rb', line 35

def self.cache_key(key)
  "configurable_engine:#{key}"
end

.defaults ⇒ Object 



11
12
13
14
15
16
17
 
# File 'app/models/configurable.rb', line 11

def self.defaults
  @defaults ||= HashWithIndifferentAccess.new(
    YAML.load_file(
      Rails.root.join('config', 'configurable.yml')
    )
  )
end

.keys ⇒ Object 



19
20
21
 
# File 'app/models/configurable.rb', line 19

def self.keys
  defaults.collect { |k, _v| k.to_s }.sort
end

.method_missing(name, *args) ⇒ Object 



115
116
117
118
119
120
121
122
123
124
125
126
 
# File 'app/models/configurable.rb', line 115

def self.method_missing(name, *args)
  name_stripped = name.to_s.sub(/[\?=]$/, '')
  if keys.include?(name_stripped)
    if name.to_s.end_with?('=')
      self[name_stripped] = args.first
    else
      self[name_stripped]
    end
  else
    super
  end
end

.parse_value(key, value) ⇒ Object 



75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
 
# File 'app/models/configurable.rb', line 75

def self.parse_value(key, value)
  case defaults[key][:type]
  when 'boolean'
    [true, 1, '1', 't', 'true'].include?(value)
  when 'decimal'
    value ||= 0
    BigDecimal(value.to_s)
  when 'integer'
    value.to_i
  when 'list'
    value ||= []
    if value.is_a? Array
      value
    else
      value.split("\n").collect { |v| v =~ /,/ ? v.split(',') : v }
    end
  when 'date'
    if value.is_a? Date
      value
    elsif value.present?
      Date.parse(value)
    end
  else
    value
  end
end

.serialized_value(key) ⇒ Object 



102
103
104
 
# File 'app/models/configurable.rb', line 102

def self.serialized_value(key)
  value_for_serialization key, self[key]
end

.value_for_serialization(key, value) ⇒ Object 



106
107
108
109
110
111
112
113
 
# File 'app/models/configurable.rb', line 106

def self.value_for_serialization(key, value)
  if defaults[key][:type] == 'list' && value.is_a?(Array)
    value = value.collect { |entry| entry.join ',' } if value.all? { |entry| entry.is_a? Array }
    value.join("\n")
  else
    value.to_s
  end.gsub("\r\n", "\n")
end

Instance Method Details

#value ⇒ Object 



71
72
73
 
# File 'app/models/configurable.rb', line 71

def value
  self.class.parse_value name, super
end