Class: MongoGrid

Inherits:
Object
  • Object
show all
Defined in:
lib/models/mongo_grid.rb

Instance Method Summary collapse

Constructor Details

#initialize(grid, meta_data_collection) ⇒ MongoGrid

Returns a new instance of MongoGrid.



2
3
4
5
 
# File 'lib/models/mongo_grid.rb', line 2

def initialize grid, meta_data_collection
  @grid = grid
  @meta_data_collection = meta_data_collection
end

Instance Method Details

#delete_media(key) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/models/mongo_grid.rb', line 23

def delete_media key
  existing_id = get_id key

  if (existing_id)
    @grid.delete(existing_id)  
    
    delete_map = media_map
        
    delete_map['media'].delete(key)
    save_media_map delete_map
  end
end

#get_id(key) ⇒ Object 



42
43
44
 
# File 'lib/models/mongo_grid.rb', line 42

def get_id key
  media_map['media'][key]
end

#get_media(key) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/models/mongo_grid.rb', line 46

def get_media key
  id = get_id key
  
  begin
  file = @grid.get id
  rescue
  end
  
  if (file != nil)
          
    media = MongoMedia.new
    media.body = file.read
    media.content_type= file.content_type
    
    if(file.metadata)
      media.last_updated= file.metadata['_koda_last_modified']
      media
    else
      media
    end
  end
end

#media_links ⇒ Object 



36
37
38
39
40
 
# File 'lib/models/mongo_grid.rb', line 36

def media_links
  media_map.raw_document['media'].keys.map do |name|
    {'href' => '/content/media/' + name.to_s, 'rel' => 'full', 'title' => name.to_s}      
  end    
end

#save_media(media, file_name = nil) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/models/mongo_grid.rb', line 7

def save_media media, file_name=nil
  map = media_map

  delete_media file_name
  id = @grid.put(media.body, {:content_type => media.content_type, :metadata => {'_koda_last_modified' => media.last_updated}.to_s })
  
  if (!file_name)
    file_name = id.to_s
  end
  
  map['media'][file_name] = id
  
  save_media_map map
  file_name
end