Module: Moar::Controller

Extended by:
ActiveSupport::Concern
Defined in:
lib/moar/controller.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#moar(relation) ⇒ ActiveRecord::Relation

Paginates relation, returning an ActiveRecord::Relation with an offset and limit applied. The offset and limit are calculated based on pagination increments (as specified by either Moar::Controller::ClassMethods#moar_increments or Moar::Config#increments), and the current page number (parsed from the request query param specified by Moar::Config#page_param).

If the current page number is less than or equal to the number of pagination increments, the limit will be the pagination increment corresponding to the current page number. Otherwise, the limit will be the sum of all increments. For example, if the pagination increments are [15,20,25], the offsets and limits are:

  • page 1: offset 0, limit 15

  • page 2: offset 15, limit 20

  • page 3: offset 35, limit 25

  • page 4: offset 60, limit 60

  • page 5: offset 120, limit 60

  • page 6: offset 180, limit 60

  • …

Parameters:

  • relation (ActiveRecord::Relation)

Returns:

  • (ActiveRecord::Relation)
[View source]

29
30
31
32
33
34
35
36
37
 
# File 'lib/moar/controller.rb', line 29

def moar(relation)
  @moar = Moar::Context.new(
    _moar_increments || Moar.config.increments,
    params[Moar.config.page_param].to_i,
    params[Moar.config.accumulation_param].present?
  )

  relation.offset(@moar.offset).limit(@moar.limit)
end