Class: ActiveScaffold::DataStructures::ProxyColumn

Inherits:
Object
  • Object
show all
Includes:
Column::ProxyableMethods
Defined in:
lib/active_scaffold/data_structures/proxy_column.rb

Constant Summary collapse

COPY_VARS = 
%i[@list_ui @list_ui_options @show_ui @show_ui_options @search_ui @search_ui_options @search_joins].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Column::ProxyableMethods

#<=>, #associated_number?, #attributes=, #cache_count?, #calculation?, #clear_link, #convert_to_native?, #description, #form_ui=, #includes=, #inplace_edit=, #label, #link, #list_ui, #list_ui=, #list_ui_options, #number?, #number_to_native, #placeholder, #required?, #search_joins, #search_joins=, #search_sql, #search_sql=, #search_ui, #search_ui=, #search_ui_options, #searchable?, #set_link, #show_blank_record?, #show_ui, #show_ui=, #show_ui_options, #sort, #sort=, #sort_by, #sortable?, #update_columns=

Constructor Details

#initialize(column) ⇒ ProxyColumn

Returns a new instance of ProxyColumn.



6
7
8
9
10
11
12
13
14
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 6

def initialize(column)
  @column = column
  # without override_or_delegate, the methods won't use column's values if they are set
  # with override_or_delegate, if they had no value, they won't return overrided form_ui
  # the easier way is copying variables to proxy object
  (column.instance_variables & COPY_VARS).each do |var|
    instance_variable_set(var, column.instance_variable_get(var))
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name) ⇒ Object 



43
44
45
46
47
48
49
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 43

def method_missing(name, ...)
  if respond_to_missing?(name, true)
    @column.send(name, ...)
  else
    super
  end
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



58
59
60
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 58

def options
  @options
end

#params ⇒ Object

Returns the value of attribute params.



58
59
60
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 58

def params
  @params
end

Class Method Details

.attr_accessor(*names) ⇒ Object 



24
25
26
27
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 24

def self.attr_accessor(*names)
  attr_reader(*names)
  attr_writer(*names)
end

.attr_reader(*names) ⇒ Object 



16
17
18
19
20
21
22
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 16

def self.attr_reader(*names)
  names.each do |name|
    define_method name do
      instance_variable_defined?(:"@#{name}") ? instance_variable_get(:"@#{name}") : @column.send(name)
    end
  end
end

.override_or_delegate(*names) ⇒ Object 



29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 29

def self.override_or_delegate(*names)
  location = caller_locations(1, 1).first
  method_def = names.map do |name|
    "def #{name}(...)
        instance_variable_defined?(\"@#{name.to_s.gsub(/\?$/, '')}\") ? super : @column.send(\"#{name}\", ...)
      end"
  end

  module_eval method_def.join(';'), location.path, location.lineno
  names
end

Instance Method Details

#is_a?(klass) ⇒ Boolean

Returns:

  • (Boolean) 


64
65
66
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 64

def is_a?(klass)
  super || @column.is_a?(klass)
end

#respond_to_missing?(name, include_all = false) ⇒ Boolean

Returns:

  • (Boolean) 


51
52
53
 
# File 'lib/active_scaffold/data_structures/proxy_column.rb', line 51

def respond_to_missing?(name, include_all = false)
  (!name.match?(/[!=]$/) && @column.respond_to?(name, include_all)) || super
end