Rails 5 supports adding comments in migrations
Database schemas change rapidly as project progresses. And it can be difficult to track purpose of each table and each column in a large project with multiple team members. The solution for this problem is to document data models right from Rails migrations. Solution in Rails 4 You can add comments in Rails 4.x migrations using gems like migration_comments and pg_comment. Solution in Rails 5 Rails
Rails 5 provides fragment caching in Action Mailer views
Fragment cache helps in caching parts of the view instead of caching the entire view. Fragment caching is used when different parts of the view need to be cached and expired separately. Before Rails 5, fragment caching was supported only in Action View templates. Rails 5 provides fragment caching in Action Mailer views . To use this feature, we need to configure our application as follows. This co
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