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# frozen_string_literal: true
require "abstract_unit"
require "action_controller/metal/strong_parameters"
class NestedParametersPermitTest < ActiveSupport::TestCase
def assert_filtered_out(params, key)
assert_not params.has_key?(key), "key #{key.inspect} has not been filtered out"
end
test "permitted nested parameters" do
params = ActionController::Parameters.new(
book: {
title: "Romeo and Juliet",
authors: [{
name: "William Shakespeare",
born: "1564-04-26"
}, {
name: "Christopher Marlowe"
}, {
name: %w(malicious injected names)
}],
details: {
pages: 200,
genre: "Tragedy"
},
id: {
isbn: "x"
}
},
magazine: "Mjallo!")
permitted = params.permit book: [ :title, { authors: [ :name ] }, { details: :pages }, :id ]
assert_predicate permitted, :permitted?
assert_equal "Romeo and Juliet", permitted[:book][:title]
assert_equal "William Shakespeare", permitted[:book][:authors][0][:name]
assert_equal "Christopher Marlowe", permitted[:book][:authors][1][:name]
assert_equal 200, permitted[:book][:details][:pages]
assert_filtered_out permitted, :magazine
assert_filtered_out permitted[:book], :id
assert_filtered_out permitted[:book][:details], :genre
assert_filtered_out permitted[:book][:authors][0], :born
assert_filtered_out permitted[:book][:authors][2], :name
end
test "permitted nested parameters with a string or a symbol as a key" do
params = ActionController::Parameters.new(
book: {
"authors" => [
{ name: "William Shakespeare", born: "1564-04-26" },
{ name: "Christopher Marlowe" }
]
})
permitted = params.permit book: [ { "authors" => [ :name ] } ]
assert_equal "William Shakespeare", permitted[:book]["authors"][0][:name]
assert_equal "William Shakespeare", permitted[:book][:authors][0][:name]
assert_equal "Christopher Marlowe", permitted[:book]["authors"][1][:name]
assert_equal "Christopher Marlowe", permitted[:book][:authors][1][:name]
permitted = params.permit book: [ { authors: [ :name ] } ]
assert_equal "William Shakespeare", permitted[:book]["authors"][0][:name]
assert_equal "William Shakespeare", permitted[:book][:authors][0][:name]
assert_equal "Christopher Marlowe", permitted[:book]["authors"][1][:name]
assert_equal "Christopher Marlowe", permitted[:book][:authors][1][:name]
end
test "nested arrays with strings" do
params = ActionController::Parameters.new(
book: {
genres: ["Tragedy"]
})
permitted = params.permit book: { genres: [] }
assert_equal ["Tragedy"], permitted[:book][:genres]
end
test "permit may specify symbols or strings" do
params = ActionController::Parameters.new(
book: {
title: "Romeo and Juliet",
author: "William Shakespeare"
},
magazine: "Shakespeare Today")
permitted = params.permit({ book: ["title", :author] }, "magazine")
assert_equal "Romeo and Juliet", permitted[:book][:title]
assert_equal "William Shakespeare", permitted[:book][:author]
assert_equal "Shakespeare Today", permitted[:magazine]
end
test "nested array with strings that should be hashes" do
params = ActionController::Parameters.new(
book: {
genres: ["Tragedy"]
})
permitted = params.permit book: { genres: :type }
assert_empty permitted[:book][:genres]
end
test "nested array with strings that should be hashes and additional values" do
params = ActionController::Parameters.new(
book: {
title: "Romeo and Juliet",
genres: ["Tragedy"]
})
permitted = params.permit book: [ :title, { genres: :type } ]
assert_equal "Romeo and Juliet", permitted[:book][:title]
assert_empty permitted[:book][:genres]
end
test "nested string that should be a hash" do
params = ActionController::Parameters.new(
book: {
genre: "Tragedy"
})
permitted = params.permit book: { genre: :type }
assert_nil permitted[:book][:genre]
end
test "fields_for-style nested params" do
params = ActionController::Parameters.new(
book: {
authors_attributes: {
'0': { name: "William Shakespeare", age_of_death: "52" },
'1': { name: "Unattributed Assistant" },
'2': { name: %w(injected names) }
}
})
permitted = params.permit book: { authors_attributes: [ :name ] }
assert_not_nil permitted[:book][:authors_attributes]["0"]
assert_not_nil permitted[:book][:authors_attributes]["1"]
assert_empty permitted[:book][:authors_attributes]["2"]
assert_equal "William Shakespeare", permitted[:book][:authors_attributes]["0"][:name]
assert_equal "Unattributed Assistant", permitted[:book][:authors_attributes]["1"][:name]
assert_equal(
{ "book" => { "authors_attributes" => { "0" => { "name" => "William Shakespeare" }, "1" => { "name" => "Unattributed Assistant" }, "2" => {} } } },
permitted.to_h
)
assert_filtered_out permitted[:book][:authors_attributes]["0"], :age_of_death
end
test "fields_for-style nested params with negative numbers" do
params = ActionController::Parameters.new(
book: {
authors_attributes: {
'-1': { name: "William Shakespeare", age_of_death: "52" },
'-2': { name: "Unattributed Assistant" }
}
})
permitted = params.permit book: { authors_attributes: [:name] }
assert_not_nil permitted[:book][:authors_attributes]["-1"]
assert_not_nil permitted[:book][:authors_attributes]["-2"]
assert_equal "William Shakespeare", permitted[:book][:authors_attributes]["-1"][:name]
assert_equal "Unattributed Assistant", permitted[:book][:authors_attributes]["-2"][:name]
assert_filtered_out permitted[:book][:authors_attributes]["-1"], :age_of_death
end
test "nested number as key" do
params = ActionController::Parameters.new(
product: {
properties: {
"0" => "prop0",
"1" => "prop1"
}
})
params = params.require(:product).permit(properties: ["0"])
assert_not_nil params[:properties]["0"]
assert_nil params[:properties]["1"]
assert_equal "prop0", params[:properties]["0"]
end
end
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