Class: Ridgepole::Diff
- Inherits:
-
Object
- Object
- Ridgepole::Diff
- Defined in:
- lib/ridgepole/diff.rb
Constant Summary collapse
- PRIMARY_KEY_OPTIONS =
%i(id limit default null precision scale collation unsigned comment).freeze
Instance Method Summary collapse
- #diff(from, to, options = {}) ⇒ Object
-
#initialize(options = {}) ⇒ Diff
constructor
A new instance of Diff.
Constructor Details
Instance Method Details
#diff(from, to, options = {}) ⇒ Object
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# File 'lib/ridgepole/diff.rb', line 9 def diff(from, to, = {}) from = (from || {}).deep_dup to = (to || {}).deep_dup check_table_existence(to) delta = {} relation_info = {} scan_table_rename(from, to, delta) to.each do |table_name, to_attrs| collect_relation_info!(table_name, to_attrs, relation_info) next unless target?(table_name) if (from_attrs = from.delete(table_name)) @logger.verbose_info("# #{table_name}") unless (attrs_delta = diff_inspect(from_attrs, to_attrs)).empty? @logger.verbose_info(attrs_delta) end scan_change(table_name, from_attrs, to_attrs, delta) else delta[:add] ||= {} delta[:add][table_name] = to_attrs end end scan_relation_info(relation_info) unless @options[:merge] or @options[:skip_drop_table] from.each do |table_name, from_attrs| next unless target?(table_name) delta[:delete] ||= {} delta[:delete][table_name] = from_attrs end end delta[:execute] = [:execute] Ridgepole::Delta.new(delta, @options) end |