Created
May 11, 2016 18:18
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| #!/usr/bin/env ruby | |
| identifying_attrs = { | |
| updateable_type: 'Contact', | |
| updateable_id: 123, | |
| external_source_id: 123, | |
| attribute_name: 'title' | |
| } | |
| non_identifying_attrs = { | |
| attribute_value: 'Grand PooBah' | |
| } | |
| def to_bind_params(attrs, table) | |
| attrs.to_a.map do |pair| | |
| [table[pair.first], pair.last] | |
| end | |
| end | |
| entity_changes = Arel::Table.new(:entity_changes, ActiveRecord::Base) | |
| insert_manager = Arel::InsertManager.new(ActiveRecord::Base) | |
| insert_manager.insert(to_bind_params(identifying_attrs.merge(non_identifying_attrs), entity_changes)) | |
| update_manager = Arel::UpdateManager.new(ActiveRecord::Base) | |
| where_clause = identifying_attrs.to_a.map do |pair| | |
| entity_changes[pair.first.to_s].eq(pair.last) | |
| end | |
| update_manager.table(entity_changes).where(entity_changes.create_and(where_clause)) | |
| update_manager.set(to_bind_params(non_identifying_attrs, entity_changes)) | |
| sql = insert_manager.to_sql | |
| conflict_keys = identifying_attrs.keys.map { |k| k.to_s }.join(', ') | |
| sql << "\nON CONFLICT (#{conflict_keys}) DO\n" | |
| sql << update_manager.to_sql.sub(/^UPDATE "#{entity_changes.name}"/, "UPDATE") | |
| puts sql |
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