bradpauly

class Configuration
  def method_missing(name)
    self.class.instance_variable_get("@#{name}")
  end

  def self.set(name, value)
    instance_variable_set("@#{name}", value)
  end

  def self.default(name, value)

bradpauly

require "minitest/autorun"
require "minitest/spec"

class Pager
  def initialize(total_rows:, rows_per_page:)
    @total_rows = total_rows
    @rows_per_page = rows_per_page
  end

  def total_pages

bradpauly

> rows_per_page = 10
=> 10

> total_rows = 33
=> 33

> total_rows/rows_per_page
=> 3

> total_rows/rows_per_page.to_f

bradpauly

require "minitest/autorun"
require "minitest/spec"

class Pager
  def initialize(rows:, rows_per_page:)
    @rows = rows
    @rows_per_page = rows_per_page
  end

  def total_pages

bradpauly

require "minitest/autorun"
require "minitest/spec"
require "ostruct"

class Pager
  def initialize(rows:, rows_per_page:)
    @rows = rows
    @rows_per_page = rows_per_page
  end

bradpauly

# Assuming we have 33 rows.
pager = Pager.new(rows: rows, rows_per_page: 10)
pager.rows(1) # The first 10 rows
pager.rows(2) # The next 10 rows
pager.rows(3) # The next 10 rows
pager.rows(4) # The last 3 rows

bradpauly

# Controller
recipes = Recipe.all
@pager = Pager.new(results: recipes, rows_per_page: 10, page: 1)

# ERB template
<% @pager.rows.each do |row| %>
  <%= row.name %>
<% end %>

bradpauly

require "minitest/autorun"
require "minitest/spec"

class Pager
  def initialize(results:, rows_per_page:)
    @results = results
    @rows_per_page = rows_per_page
  end

  def total_pages