RSpec.describe 'exposures' do
let(:context) { Struct.new(:title, :assets).new('dry-view rocks!', -> input { "#{input}.jpg" }) }
it 'uses exposures to build view locals' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users'
config.default_format = :html
end
expose :users do |input|
input.fetch(:users).map { |user|
user.merge(name: user[:name].upcase)
}
end
end.new
users = [
{ name: 'Jane', email: 'jane@doe.org' },
{ name: 'Joe', email: 'joe@doe.org' }
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!| JANE | jane@doe.org |
| JOE | joe@doe.org |
'
)
end
it 'supports both blocks and instance methods as exposures' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users'
config.default_format = :html
end
expose :users
private
def users(input)
input.fetch(:users).map { |user|
user.merge(name: user[:name].upcase)
}
end
end.new
users = [
{ name: 'Jane', email: 'jane@doe.org' },
{ name: 'Joe', email: 'joe@doe.org' }
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!| JANE | jane@doe.org |
| JOE | joe@doe.org |
| Jane | jane@doe.org |
| Joe | joe@doe.org |
- Jane (jane@doe.org)
- Joe (joe@doe.org)
2 users
'
)
end
it 'supports defining multiple exposures at once' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count'
config.default_format = :html
end
expose :users, :users_count
private
def users(input)
input.fetch(:users)
end
def users_count(users)
"#{users.length} users"
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
2 users
'
)
end
it 'allows exposures to be hidden from the view' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count'
config.default_format = :html
end
private_expose :prefix do
"COUNT: "
end
expose :users do |input|
input.fetch(:users)
end
expose :users_count do |prefix, users|
"#{prefix}#{users.length} users"
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
input = {users: users, context: context}
expect(vc.(input)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
COUNT: 2 users
'
)
expect(vc.locals(input)).to include(:users, :users_count)
expect(vc.locals(input)).not_to include(:prefix)
end
end