Class: Saviour::File

Inherits:
Object
  • Object
show all
Defined in:
lib/saviour/file.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uploader_klass, model, attached_as) ⇒ File 



7
8
9
10
 
# File 'lib/saviour/file.rb', line 7

def initialize(uploader_klass, model, attached_as)
  @uploader_klass, @model, @attached_as = uploader_klass, model, attached_as
  @source_was = @source = nil
end

Instance Attribute Details

#persisted_path ⇒ Object (readonly)

Returns the value of attribute persisted_path.



5
6
7
 
# File 'lib/saviour/file.rb', line 5

def persisted_path
  @persisted_path
end

Instance Method Details

#assign(object) ⇒ Object

Raises:

  • (RuntimeError) 


34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/saviour/file.rb', line 34

def assign(object)
  raise(RuntimeError, "must respond to `read`") if object && !object.respond_to?(:read)

  followers = @model.class.attached_followers_per_leader[@attached_as]
  followers.each { |x| @model.send(x).assign(object) unless @model.send(x).changed? } if followers

  @source_data = nil
  @source = object
  @persisted_path = nil if object

  object
end

#blank? ⇒ Boolean 



97
98
99
 
# File 'lib/saviour/file.rb', line 97

def blank?
  !@source && !persisted?
end

#changed? ⇒ Boolean 



51
52
53
 
# File 'lib/saviour/file.rb', line 51

def changed?
  @source_was != @source
end

#delete ⇒ Object 



24
25
26
 
# File 'lib/saviour/file.rb', line 24

def delete
  persisted? && exists? && Config.storage.delete(@persisted_path)
end

#exists? ⇒ Boolean 



16
17
18
 
# File 'lib/saviour/file.rb', line 16

def exists?
  persisted? && Config.storage.exists?(@persisted_path)
end

#filename ⇒ Object 



55
56
57
 
# File 'lib/saviour/file.rb', line 55

def filename
  ::File.basename(@persisted_path) if persisted?
end

#filename_to_be_assigned ⇒ Object 



77
78
79
 
# File 'lib/saviour/file.rb', line 77

def filename_to_be_assigned
  changed? ? (SourceFilenameExtractor.new(@source).detected_filename || SecureRandom.hex) : nil
end

#persisted? ⇒ Boolean 



47
48
49
 
# File 'lib/saviour/file.rb', line 47

def persisted?
  !!@persisted_path
end

#public_url ⇒ Object Also known as: url 



28
29
30
 
# File 'lib/saviour/file.rb', line 28

def public_url
  persisted? && Config.storage.public_url(@persisted_path)
end

#read ⇒ Object 



20
21
22
 
# File 'lib/saviour/file.rb', line 20

def read
  persisted? && exists? && Config.storage.read(@persisted_path)
end

#set_path!(path) ⇒ Object 



12
13
14
 
# File 'lib/saviour/file.rb', line 12

def set_path!(path)
  @persisted_path = path
end

#source_data ⇒ Object 



90
91
92
93
94
95
 
# File 'lib/saviour/file.rb', line 90

def source_data
  @source_data ||= begin
    @source.rewind
    @source.read
  end
end

#with_copy ⇒ Object 



59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/saviour/file.rb', line 59

def with_copy
  raise "must be persisted" unless persisted?

  Tempfile.open([::File.basename(filename, ".*"), ::File.extname(filename)]) do |file|
    begin
      file.binmode
      file.write(read)
      file.flush
      file.rewind

      yield(file)
    ensure
      file.close
      file.delete
    end
  end
end

#write ⇒ Object

Raises:

  • (RuntimeError) 


81
82
83
84
85
86
87
88
 
# File 'lib/saviour/file.rb', line 81

def write
  raise(RuntimeError, "You must provide a source to read from first") unless @source

  path = uploader.write(source_data, filename_to_be_assigned)
  @source_was = @source
  @persisted_path = path
  path
end