Sha256: 529ccde91b7184cbecb8b3b7a94e191f78b42e1bd5f70327d646ec01111b3661
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Size: 980 Bytes
Versions: 21
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Stored size: 980 Bytes
Contents
RSpec.describe 'Eager loading' do
include_context 'users and tasks'
with_adapters do
before do
conf.relation(:users) do
def by_name(name)
where(name: name)
end
end
conf.relation(:tasks) do
def for_users(users)
where(user_id: users.map { |tuple| tuple[:id] })
end
end
conf.relation(:tags) do
def for_tasks(tasks)
inner_join(:task_tags, task_id: :id)
.where(task_id: tasks.map { |tuple| tuple[:id] })
end
end
end
it 'issues 3 queries for 3 combined relations' do
users = container.relation(:users).by_name('Piotr')
tasks = container.relation(:tasks)
tags = container.relation(:tags)
relation = users.combine(tasks.for_users.combine(tags.for_tasks))
# TODO: figure out a way to assert correct number of issued queries
expect(relation.call).to be_instance_of(ROM::Relation::Loaded)
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems