Class: OccamsRecord::EagerLoaders::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/occams-record/eager_loaders/base.rb

Overview

Base class for eagoer loading an association.

Direct Known Subclasses

BelongsTo, Habtm, HasOne

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ref, scope = nil, use: nil, as: nil) { ... } ⇒ Base

ActiveRecord::Relation on which you may call all the normal query hethods (select, where, etc) as well as any scopes you’ve defined on the model.

Yields:

  • perform eager loading on this association (optional)



18
19
20
21
22
 
# File 'lib/occams-record/eager_loaders/base.rb', line 18

def initialize(ref, scope = nil, use: nil, as: nil, &eval_block)
  @ref, @scope, @use, @as, @eval_block = ref, scope, use, as, eval_block
  @model = ref.klass
  @name = (as || ref.name).to_s
end

Instance Attribute Details

#name ⇒ String (readonly) 



8
9
10
 
# File 'lib/occams-record/eager_loaders/base.rb', line 8

def name
  @name
end

Instance Method Details

#run(rows, query_logger: nil) ⇒ Object

Run the query and merge the results into the given rows.



30
31
32
33
34
35
 
# File 'lib/occams-record/eager_loaders/base.rb', line 30

def run(rows, query_logger: nil)
  query(rows) { |scope|
    assoc_rows = Query.new(scope, use: @use, query_logger: query_logger, &@eval_block).run
    merge! assoc_rows, rows
  }
end