Callbacks

Call a specified method on a specific life cycle event.

Here is an example:

require "granite/adapter/pg"

class Post < Granite::Base
  connection pg

  before_save :upcase_title

  column id : Int64, primary: true
  column title : String
  column content : String
  timestamps

  def upcase_title
    if title = @title
      @title = title.upcase
    end
  end
end

You can register callbacks for the following events:

Create

  • before_save

  • before_create

  • save

  • after_create

  • after_save

Update

  • before_save

  • before_update

  • save

  • after_update

  • after_save

Destroy

  • before_destroy

  • destroy

  • after_destroy

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