Class: MongoPlug

Inherits:
Object
  • Object
show all
Defined in:
lib/obvious/files/external/mongo_plug.rb

Overview

To get the mongo system to work you need to have a counters collection. The code here will increment the seq field which we use to set the id. If you are having problems, you probably need to create the collection and add entries for each other collection you want to have an id sequence.

Instance Method Summary collapse

Constructor Details

#initialize(collection) ⇒ MongoPlug

Returns a new instance of MongoPlug.



9
10
11
12
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 9

def initialize collection
  @collection = collection
  @session = MONGO_SESSION
end

Instance Method Details

#clean_up(input) ⇒ Object 



42
43
44
45
46
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 42

def clean_up input
  result = symbolize_keys input
  result.delete :_id
  result
end

#get(input) ⇒ Object 



23
24
25
26
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 23

def get input
  result = symbolize_keys @session[@collection].find(:id => input[:id]).first
  clean_up result
end

#list ⇒ Object 



14
15
16
17
18
19
20
21
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 14

def list
  result = @session[@collection].find.entries
  result.map! do |entry|
    clean_up entry 
  end

  result
end

#remove(input) ⇒ Object 



37
38
39
40
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 37

def remove input
  @session[@collection].find(:id => input[:id]).remove
  true
end

#save(input) ⇒ Object 



28
29
30
31
32
33
34
35
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 28

def save input
  if input[:id] == -1
    id = @session[:counters].find(:_id => @collection).modify({ "$inc" => { seq: 1 } }, new:true)["seq"]
    input[:id] = id
  end
  result = @session[@collection].find(:id => input[:id]).modify(input, upsert: true, new: true)
  clean_up result
end

#symbolize_keys(hash) ⇒ Object 



48
49
50
51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/obvious/files/external/mongo_plug.rb', line 48

def symbolize_keys hash
  hash.inject({}){|result, (key, value)|
    new_key = case key
              when String then key.to_sym
              else key
              end
    new_value = case value
                when Hash then symbolize_keys(value)
                else value
                end
    result[new_key] = new_value
    result
  }
end