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           if has_alias_action
  29             return self.alias_action.find options
  30           end
  31           self.finder(options).order(
  32             self.order_sql(options[:order], options[:direction])
  33           ).page(options[:page]).per(options[:page_size])
  34         end
  35
  36         def finder options = {}
  37           finder_name = options[:finder] || 'find_' + @name
  38           finder = if args = options[:param]
  39             args = [args] unless options[:param].is_a?(Array)  # param to array
  40             self.finder_model.__send__(finder_name, *args)
  41           else
  42             self.finder_model.__send__(finder_name)
  43           end
  44         end
  45
  46         def finder_model
  47           Manifest.manifest.models[@item_name].classify
  48         end
  49
  50         def return_model
  51           Manifest.manifest.models[@return_item_name].classify
  52         end
  53
  54         def order_sql order, direction
  55           order ||= self.order
  56           direction ||= (self.direction < 0 ? :desc : :asc)
  57           self.return_model.arel_table[order].__send__(direction)
  58         end
  59
  60         def page page
  61           page.to_i
  62           page = 1 if page < 1
  63           page
  64         end
  65
  66         def page_size page_size
  67           page_size ||= self.default_page_size
  68           page_size = -1 if page_size < 0
  69           page_size = self.max_page_size if page_size > self.max_page_size
  70           page_size
  71         end
  72
  73         def limited?
  74           self.max_page_size > 0
  75         end
  76
  77         def unlimited?
  78           !self.limited?
  79         end
  80
  81       end
  82
  83     end
  84   end
  85 end