Class: CommentMigration
- Inherits:
-
Object
- Object
- CommentMigration
- Defined in:
- lib/comment_migration.rb
Instance Method Summary collapse
Instance Method Details
#comments_down ⇒ Object
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# File 'lib/comment_migration.rb', line 26 def comments_down {} end |
#comments_up ⇒ Object
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# File 'lib/comment_migration.rb', line 4 def comments_up raise "Not implemented" end |
#down ⇒ Object
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# File 'lib/comment_migration.rb', line 30 def down replace_nils(comments_up) .deep_merge(comments_down) .each do |table| table[1].each do |column| table_name = table[0] column_name = column[0] comment = column[1] if column_name == :_table DB.exec "COMMENT ON TABLE #{table_name} IS ?", comment puts " COMMENT ON TABLE #{table_name}" else DB.exec "COMMENT ON COLUMN #{table_name}.#{column_name} IS ?", comment puts " COMMENT ON COLUMN #{table_name}.#{column_name}" end end end end |
#up ⇒ Object
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# File 'lib/comment_migration.rb', line 8 def up comments_up.each do |table| table[1].each do |column| table_name = table[0] column_name = column[0] comment = column[1] if column_name == :_table DB.exec "COMMENT ON TABLE #{table_name} IS ?", comment puts " COMMENT ON TABLE #{table_name}" else DB.exec "COMMENT ON COLUMN #{table_name}.#{column_name} IS ?", comment puts " COMMENT ON COLUMN #{table_name}.#{column_name}" end end end end |