Class: Ductr::Postgres::BufferedLookup

Inherits:

SequelBase::BufferedLookup

Object
SequelBase::BufferedLookup
Ductr::Postgres::BufferedLookup

show all

Defined in:: lib/ductr/postgres/buffered_lookup.rb

Overview

A lookup control that execute the query for a bunch of rows, registered as :buffered. Accept the :buffer_size option, default value is 10 000. You have to implement your own row matching logic:

lookup :some_postgres_database, :buffered, buffer_size: 42 def my_lookup(db, buffer, &) ids = buffer.map {|row| row[:id]} db[:items].where(item: ids).each do |row| match = buffer.find { |r| r[:id] == row[:item] }

  next yield(row) unless match

  yield(row.merge match)
end

end