Class: ROM::SQL::Migration::SchemaDiff::ForeignKeyDiff Private

Inherits:
Object
  • Object
show all
Defined in:
lib/rom/sql/migration/schema_diff.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Direct Known Subclasses

ForeignKeyAdded, ForeignKeyRemoved

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(foreign_key) ⇒ ForeignKeyDiff

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of ForeignKeyDiff.



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# File 'lib/rom/sql/migration/schema_diff.rb', line 156

def initialize(foreign_key)
  @foreign_key = foreign_key
end

Instance Attribute Details

#foreign_key ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/sql/migration/schema_diff.rb', line 154

def foreign_key
  @foreign_key
end

Instance Method Details

#child_keys ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/sql/migration/schema_diff.rb', line 168

def child_keys
  foreign_key.attributes.map(&:name)
end

#parent ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/sql/migration/schema_diff.rb', line 160

def parent
  foreign_key.parent_table
end

#parent_keys ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/sql/migration/schema_diff.rb', line 164

def parent_keys
  foreign_key.parent_keys
end