Class: ActivePermalink::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/active_permalink/generator.rb

Instance Method Summary collapse

Constructor Details

#initialize(record, field, old_value, new_value, options = {}) ⇒ Generator

Returns a new instance of Generator.



3
4
5
6
7
8
9
10
 
# File 'lib/active_permalink/generator.rb', line 3

def initialize(record, field, old_value, new_value, options = {})
  @record    = record
  @field     = field
  @old_value = old_value
  @new_value = new_value
  @options   = options
  @scope     = options.fetch :scope, :global
end

Instance Method Details



48
49
50
51
 
# File 'lib/active_permalink/generator.rb', line 48

def build_new_permalink
  parameters = { slug: scope_unique_slug, scope: @scope, active: true }
  @record.build_active_permalink(parameters)
end

#deactivate_old_permalink ⇒ Object 



31
32
33
34
35
36
37
38
 
# File 'lib/active_permalink/generator.rb', line 31

def deactivate_old_permalink
  return if @record.active_permalink.new_record?

  parameters = { slug: @old_value, active: true }
  permalink  = @record.old_permalinks.rewhere(parameters).first

  permalink.update_column(:active, false) unless permalink.nil?
end

#new_permalink ⇒ Object 



53
54
55
56
57
58
 
# File 'lib/active_permalink/generator.rb', line 53

def new_permalink
  deactivate_old_permalink
  @record.reload_active_permalink

  reassign_old_permalink || build_new_permalink
end

#reassign_old_permalink ⇒ Object 



40
41
42
43
44
45
46
 
# File 'lib/active_permalink/generator.rb', line 40

def reassign_old_permalink
  permalink = @record.old_permalinks.find_by(slug: slug_from_column)
  return if permalink.nil?

  permalink.update(active: true)
  permalink
end

#scope_unique_slug ⇒ Object 



20
21
22
23
24
25
26
27
28
29
 
# File 'lib/active_permalink/generator.rb', line 20

def scope_unique_slug
  unique = slug_from_column
  index  = 1

  while not Permalink.where(scope: @scope, slug: unique).count.zero?
    unique = "#{slug_from_column}-#{(index += 1)}"
  end

  unique
end

#slug_candidates ⇒ Object 



12
13
14
 
# File 'lib/active_permalink/generator.rb', line 12

def slug_candidates
  @new_value.present? ? @new_value : @record.send(@field)
end

#slug_from_column ⇒ Object 



16
17
18
 
# File 'lib/active_permalink/generator.rb', line 16

def slug_from_column
  @column_slug ||= slug_candidates.to_s.to_url
end