alex-lairan

abstract class UserFetcher
  abstract def call : User?

  class FromEmail < UserFetcher
    @email : String?

    def initialize(@email : String?, @query = UserQuery.new)
    end

    def call : User?

alex-lairan

class Some
  def initialize(value)
    @value = value
  end

  def value
    @value
  end
end

alex-lairan

macro generic_crud(*names)
  {% for name, index in names %}
    generic_create {{name}}
    generic_read   {{name}}
    generic_update {{name}}
    generic_delete {{name}}
  {% end %}
end

alex-lairan

require "kemal"

config do |env|
  env.response.content_type = "application/json" # OR "text/html" OR other
  env.set_default_header "Header", "value"
  
  public_folder "path/to/your/folder"
  
  env.custom_attributes["key1"] = value1
  env.custom_attributes["key2"] = value2

alex-lairan

require "kemal"

macro generic_create(name)
  post "/{{name}}" do |env|
    puts "create {{name}}"
  end
end

macro generic_read(name)
  get "/{{name}}" do |env|