Class: Automigration::FieldsKeeper

Inherits:
Object
  • Object
show all
Defined in:
lib/automigration/fields_keeper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model) ⇒ FieldsKeeper

Returns a new instance of FieldsKeeper.



6
7
8
9
10
11
12
13
 
# File 'lib/automigration/fields_keeper.rb', line 6

def initialize(model)
  @model = model
  @fields = nil
  @migration_attrs = []
  @timestamps_added = false

  @fields_lookup = {}
end

Instance Attribute Details

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



3
4
5
 
# File 'lib/automigration/fields_keeper.rb', line 3

def fields
  @fields
end

#migration_attrs ⇒ Object (readonly)

Returns the value of attribute migration_attrs.



4
5
6
 
# File 'lib/automigration/fields_keeper.rb', line 4

def migration_attrs
  @migration_attrs
end

Instance Method Details

#add_field(type, name, options = {}) ⇒ Object 



36
37
38
39
40
 
# File 'lib/automigration/fields_keeper.rb', line 36

def add_field(type, name, options = {})
  has_fields(:timestamps => false) do |f|
    f.send type, name, options
  end
end

#auto_migrable? ⇒ Boolean

Returns:

  • (Boolean) 


46
47
48
 
# File 'lib/automigration/fields_keeper.rb', line 46

def auto_migrable?
  @fields.present?
end

#field_db_columns ⇒ Object 



54
55
56
57
58
 
# File 'lib/automigration/fields_keeper.rb', line 54

def field_db_columns
  @fields.map do |field|
    Field.to_db_columns(field)
  end.flatten
end

#field_names ⇒ Object 



50
51
52
 
# File 'lib/automigration/fields_keeper.rb', line 50

def field_names
  @field_names ||= fields.map{|f| f[:name]}
end

#has_fields(options = {}, &block) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/automigration/fields_keeper.rb', line 15

def has_fields(options = {}, &block)
  options.assert_valid_keys(:timestamps)
  options.reverse_merge!(:timestamps => true)

  dsl = Automigration::Dsl.new
  block.arity == 1 ?  block.call(dsl) : dsl.instance_exec(&block)

  dsl.fields.each do |field|
    Field.extend_model!(@model, field)
  end

  @fields ||= []
  @fields += dsl.fields

  if !@timestamps_added && options[:timestamps]
    @timestamps_added = true
    @fields << {:as => :datetime, :name => :created_at, :accessible => false}
    @fields << {:as => :datetime, :name => :updated_at, :accessible => false}
  end
end

#migration_attr(*args) ⇒ Object 



42
43
44
 
# File 'lib/automigration/fields_keeper.rb', line 42

def migration_attr(*args)
  @migration_attrs += args.flatten.map(&:to_s)
end