lib/manifest/controller/action/list.rb

   1 module Manifest
   2   module ControllerModule
   3     module ActionModule
   4       class ActionList < Base
   5         attr :order, :direction, :default_page_size, :max_page_size, :return_item_name
   6
   7         def set_default
   8           super
   9           @args['direction'] ||= -1
  10           @args['default_page_size'] ||= 25
  11           @args['max_page_size'] ||= 100
  12         end
  13
  14         def init
  15           super
  16           @order = @args['order'] || 'updated_at'
  17           @direction = @args['direction'].to_i
  18           @default_page_size = @args['default_page_size']
  19           @max_page_size = @args['max_page_size']
  20           @return_item_name = @args['return_item_name'] || @item_name
  21         end
  22
  23         def a_arg_names
  24           super + ['order', 'direction', 'default_page_size', 'max_page_size']
  25         end
  26
  27         def find options = {}
  28           self.finder(options).order(
  29             self.order_sql(options[:order], options[:direction])
  30           ).page(options[:page]).per(options[:page_size])
  31         end
  32
  33         def finder options = {}
  34           finder_name = options[:finder] || 'find_' + @name
  35           finder = if args = options[:param]
  36             args = [args] unless options[:param].is_a?(Array)  # param to array
  37             self.finder_model.__send__(finder_name, *args)
  38           else
  39             self.finder_model.__send__(finder_name)
  40           end
  41         end
  42
  43         def finder_model
  44           Manifest.manifest.models[@item_name].classify
  45         end
  46
  47         def return_model
  48           Manifest.manifest.models[@return_item_name].classify
  49         end
  50
  51         def order_sql order, direction
  52           order ||= self.order
  53           direction ||= (self.direction < 0 ? :desc : :asc)
  54           self.return_model.arel_table[order].__send__(direction)
  55         end
  56
  57         def page page
  58           page.to_i
  59           page = 1 if page < 1
  60           page
  61         end
  62
  63         def page_size page_size
  64           page_size ||= self.default_page_size
  65           page_size = -1 if page_size < 0
  66           page_size = self.max_page_size if page_size > self.max_page_size
  67           page_size
  68         end
  69
  70         def limited?
  71           self.max_page_size > 0
  72         end
  73
  74         def unlimited?
  75           !self.limited?
  76         end
  77
  78       end
  79
  80     end
  81   end
  82 end