Class: Reactor::MigrationProxy

Inherits:
Object
  • Object
show all
Defined in:
lib/reactor/tools/migrator.rb

Overview

Class responsible for running a single migration, a helper for Migrator

Instance Method Summary collapse

Constructor Details

#initialize(versioner, name, version, direction, filename) ⇒ MigrationProxy

Returns a new instance of MigrationProxy.



7
8
9
10
11
12
13
 
# File 'lib/reactor/tools/migrator.rb', line 7

def initialize(versioner, name, version, direction, filename)
  @versioner = versioner
  @name = name
  @version = version
  @filename = filename
  @direction = direction
end

Instance Method Details

#class_name ⇒ Object 



47
48
49
 
# File 'lib/reactor/tools/migrator.rb', line 47

def class_name
  return Kernel.const_get(@name)
end

#down ⇒ Object 



38
39
40
41
42
43
44
45
 
# File 'lib/reactor/tools/migrator.rb', line 38

def down
  result = class_name.send(:down) and @versioner.remove(@version)
  class_name.contained.each do |version|
    puts "#{class_name.to_s} contains migration #{version}"
    @versioner.remove(version)
  end if result
  result
end

#filename ⇒ Object 



59
60
61
 
# File 'lib/reactor/tools/migrator.rb', line 59

def filename
  @filename
end

#load_migration ⇒ Object 



15
16
17
 
# File 'lib/reactor/tools/migrator.rb', line 15

def load_migration
  load @filename
end

#name ⇒ Object 



51
52
53
 
# File 'lib/reactor/tools/migrator.rb', line 51

def name
  @name
end

#run ⇒ Object 



19
20
21
22
 
# File 'lib/reactor/tools/migrator.rb', line 19

def run
  return down if @direction.to_sym == :down
  return up
end

#up ⇒ Object 



24
25
26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/reactor/tools/migrator.rb', line 24

def up
  if @versioner.applied?(@version) then
    puts "Migrating up: #{@name} (#{@filename}) already applied, skipping"
    return true
  else
    result = class_name.send(:up) and @versioner.add(@version)
    class_name.contained.each do |version|
      puts "#{class_name.to_s} contains migration #{version}"
      #@versioner.add(version) # not neccesary!
    end if result
    result
  end
end

#version ⇒ Object 



55
56
57
 
# File 'lib/reactor/tools/migrator.rb', line 55

def version
  @version
end