rails generate migration file

rails generate migration CreatePost

class CreatePost < ActiveRecord::Migration[6.0]
  def change
    create_table :post do |t|
      ### TODO your columns for model
      t.timestamps
    end
  end
end

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Add column and Index using ActiveRecord in Rails

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$ rails generate mig...... #active_record (1) #alter (1) #add_column (1) #add_index (1) #rails (39)

rails production deploy

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docker-compose Rails and Postgresql

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rails new command wi...... #kubernetes (1) #docker (30) #rails (39)

Bundler could not find compatible versions

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August 18, 2019 Rail...... #rails (39)

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migrate rollback

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rails new project with postgresql database and api only mode

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$ rails new [PROJECT...... #rails (39)

Hello World

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rails generate migration file