diff options
Diffstat (limited to 'actionview/lib/action_view/helpers')
15 files changed, 148 insertions, 246 deletions
diff --git a/actionview/lib/action_view/helpers/asset_tag_helper.rb b/actionview/lib/action_view/helpers/asset_tag_helper.rb index b7fdc16a9d..5c28043f8a 100644 --- a/actionview/lib/action_view/helpers/asset_tag_helper.rb +++ b/actionview/lib/action_view/helpers/asset_tag_helper.rb @@ -318,6 +318,7 @@ module ActionView end def extract_dimensions(size) + size = size.to_s if size =~ %r{\A\d+x\d+\z} size.split('x') elsif size =~ %r{\A\d+\z} diff --git a/actionview/lib/action_view/helpers/cache_helper.rb b/actionview/lib/action_view/helpers/cache_helper.rb index 4db8930a26..9dadfb5ce1 100644 --- a/actionview/lib/action_view/helpers/cache_helper.rb +++ b/actionview/lib/action_view/helpers/cache_helper.rb @@ -122,7 +122,7 @@ module ActionView # Cache fragments of a view if +condition+ is true # - # <%= cache_if admin?, project do %> + # <% cache_if admin?, project do %> # <b>All the topics on this project</b> # <%= render project.topics %> # <% end %> @@ -138,7 +138,7 @@ module ActionView # Cache fragments of a view unless +condition+ is true # - # <%= cache_unless admin?, project do %> + # <% cache_unless admin?, project do %> # <b>All the topics on this project</b> # <%= render project.topics %> # <% end %> diff --git a/actionview/lib/action_view/helpers/date_helper.rb b/actionview/lib/action_view/helpers/date_helper.rb index 4b4f0ae577..46ce7cf0be 100644 --- a/actionview/lib/action_view/helpers/date_helper.rb +++ b/actionview/lib/action_view/helpers/date_helper.rb @@ -177,6 +177,8 @@ module ActionView # and +:name+ (string). A format string would be something like "%{name} (%<number>02d)" for example. # See <tt>Kernel.sprintf</tt> for documentation on format sequences. # * <tt>:date_separator</tt> - Specifies a string to separate the date fields. Default is "" (i.e. nothing). + # * <tt>:time_separator</tt> - Specifies a string to separate the time fields. Default is "" (i.e. nothing). + # * <tt>:datetime_separator</tt>- Specifies a string to separate the date and time fields. Default is "" (i.e. nothing). # * <tt>:start_year</tt> - Set the start year for the year select. Default is <tt>Date.today.year - 5</tt> if # you are creating new record. While editing existing record, <tt>:start_year</tt> defaults to # the current selected year minus 5. diff --git a/actionview/lib/action_view/helpers/form_helper.rb b/actionview/lib/action_view/helpers/form_helper.rb index 8d78ba13d5..b76b35bf3c 100644 --- a/actionview/lib/action_view/helpers/form_helper.rb +++ b/actionview/lib/action_view/helpers/form_helper.rb @@ -4,6 +4,7 @@ require 'action_view/helpers/tag_helper' require 'action_view/helpers/form_tag_helper' require 'action_view/helpers/active_model_helper' require 'action_view/model_naming' +require 'action_view/record_identifier' require 'active_support/core_ext/module/attribute_accessors' require 'active_support/core_ext/hash/slice' require 'active_support/core_ext/string/output_safety' @@ -110,6 +111,7 @@ module ActionView include FormTagHelper include UrlHelper include ModelNaming + include RecordIdentifier # Creates a form that allows the user to create or update the attributes # of a specific model object. @@ -1224,11 +1226,11 @@ module ActionView object_name = model_name_from_record_or_class(object).param_key end - builder = options[:builder] || default_form_builder + builder = options[:builder] || default_form_builder_class builder.new(object_name, object, self, options) end - def default_form_builder + def default_form_builder_class builder = ActionView::Base.default_form_builder builder.respond_to?(:constantize) ? builder.constantize : builder end diff --git a/actionview/lib/action_view/helpers/form_tag_helper.rb b/actionview/lib/action_view/helpers/form_tag_helper.rb index 8bb243b8b7..65a0548ffb 100644 --- a/actionview/lib/action_view/helpers/form_tag_helper.rb +++ b/actionview/lib/action_view/helpers/form_tag_helper.rb @@ -84,14 +84,13 @@ module ActionView # * <tt>:disabled</tt> - If set to true, the user will not be able to use this input. # * <tt>:include_blank</tt> - If set to true, an empty option will be created. If set to a string, the string will be used as the option's content and the value will be empty. # * <tt>:prompt</tt> - Create a prompt option with blank value and the text asking user to select something. - # * <tt>:selected</tt> - Provide a default selected value. It should be of the exact type as the provided options. # * Any other key creates standard HTML attributes for the tag. # # ==== Examples # select_tag "people", options_from_collection_for_select(@people, "id", "name") # # <select id="people" name="people"><option value="1">David</option></select> # - # select_tag "people", options_from_collection_for_select(@people, "id", "name"), selected: ["1", "David"] + # select_tag "people", options_from_collection_for_select(@people, "id", "name", "1") # # <select id="people" name="people"><option value="1" selected="selected">David</option></select> # # select_tag "people", "<option>David</option>".html_safe diff --git a/actionview/lib/action_view/helpers/number_helper.rb b/actionview/lib/action_view/helpers/number_helper.rb index f66dbfe7d3..cfd617cedc 100644 --- a/actionview/lib/action_view/helpers/number_helper.rb +++ b/actionview/lib/action_view/helpers/number_helper.rb @@ -1,4 +1,3 @@ -# encoding: utf-8 require 'active_support/core_ext/hash/keys' require 'active_support/core_ext/string/output_safety' diff --git a/actionview/lib/action_view/helpers/record_tag_helper.rb b/actionview/lib/action_view/helpers/record_tag_helper.rb index 77c3e6d394..f7ee573035 100644 --- a/actionview/lib/action_view/helpers/record_tag_helper.rb +++ b/actionview/lib/action_view/helpers/record_tag_helper.rb @@ -1,108 +1,21 @@ -require 'action_view/record_identifier' - module ActionView - # = Action View Record Tag Helpers module Helpers module RecordTagHelper - include ActionView::RecordIdentifier - - # Produces a wrapper DIV element with id and class parameters that - # relate to the specified Active Record object. Usage example: - # - # <%= div_for(@person, class: "foo") do %> - # <%= @person.name %> - # <% end %> - # - # produces: - # - # <div id="person_123" class="person foo"> Joe Bloggs </div> - # - # You can also pass an array of Active Record objects, which will then - # get iterated over and yield each record as an argument for the block. - # For example: - # - # <%= div_for(@people, class: "foo") do |person| %> - # <%= person.name %> - # <% end %> - # - # produces: - # - # <div id="person_123" class="person foo"> Joe Bloggs </div> - # <div id="person_124" class="person foo"> Jane Bloggs </div> - # - def div_for(record, *args, &block) - content_tag_for(:div, record, *args, &block) + def div_for(*) + raise NoMethodError, "The `div_for` method has been removed from " \ + "Rails. To continue using it, add the `record_tag_helper` gem to " \ + "your Gemfile:\n" \ + " gem 'record_tag_helper', '~> 1.0'\n" \ + "Consult the Rails upgrade guide for details." end - # content_tag_for creates an HTML element with id and class parameters - # that relate to the specified Active Record object. For example: - # - # <%= content_tag_for(:tr, @person) do %> - # <td><%= @person.first_name %></td> - # <td><%= @person.last_name %></td> - # <% end %> - # - # would produce the following HTML (assuming @person is an instance of - # a Person object, with an id value of 123): - # - # <tr id="person_123" class="person">....</tr> - # - # If you require the HTML id attribute to have a prefix, you can specify it: - # - # <%= content_tag_for(:tr, @person, :foo) do %> ... - # - # produces: - # - # <tr id="foo_person_123" class="person">... - # - # You can also pass an array of objects which this method will loop through - # and yield the current object to the supplied block, reducing the need for - # having to iterate through the object (using <tt>each</tt>) beforehand. - # For example (assuming @people is an array of Person objects): - # - # <%= content_tag_for(:tr, @people) do |person| %> - # <td><%= person.first_name %></td> - # <td><%= person.last_name %></td> - # <% end %> - # - # produces: - # - # <tr id="person_123" class="person">...</tr> - # <tr id="person_124" class="person">...</tr> - # - # content_tag_for also accepts a hash of options, which will be converted to - # additional HTML attributes. If you specify a <tt>:class</tt> value, it will be combined - # with the default class name for your object. For example: - # - # <%= content_tag_for(:li, @person, class: "bar") %>... - # - # produces: - # - # <li id="person_123" class="person bar">... - # - def content_tag_for(tag_name, single_or_multiple_records, prefix = nil, options = nil, &block) - options, prefix = prefix, nil if prefix.is_a?(Hash) - - Array(single_or_multiple_records).map do |single_record| - content_tag_for_single_record(tag_name, single_record, prefix, options, &block) - end.join("\n").html_safe + def content_tag_for(*) + raise NoMethodError, "The `content_tag_for` method has been removed from " \ + "Rails. To continue using it, add the `record_tag_helper` gem to " \ + "your Gemfile:\n" \ + " gem 'record_tag_helper', '~> 1.0'\n" \ + "Consult the Rails upgrade guide for details." end - - private - - # Called by <tt>content_tag_for</tt> internally to render a content tag - # for each record. - def content_tag_for_single_record(tag_name, record, prefix, options, &block) - options = options ? options.dup : {} - options[:class] = [ dom_class(record, prefix), options[:class] ].compact - options[:id] = dom_id(record, prefix) - - if block_given? - content_tag(tag_name, capture(record, &block), options) - else - content_tag(tag_name, "", options) - end - end end end end diff --git a/actionview/lib/action_view/helpers/sanitize_helper.rb b/actionview/lib/action_view/helpers/sanitize_helper.rb index e72e85ee5f..463a4e9f60 100644 --- a/actionview/lib/action_view/helpers/sanitize_helper.rb +++ b/actionview/lib/action_view/helpers/sanitize_helper.rb @@ -8,76 +8,77 @@ module ActionView # These helper methods extend Action View making them callable within your template files. module SanitizeHelper extend ActiveSupport::Concern - # This +sanitize+ helper will HTML encode all tags and strip all attributes that - # aren't specifically allowed. + # Sanitizes HTML input, stripping all tags and attributes that aren't whitelisted. # - # It also strips href/src tags with invalid protocols, like javascript: especially. - # It does its best to counter any tricks that hackers may use, like throwing in - # unicode/ascii/hex values to get past the javascript: filters. Check out - # the extensive test suite. + # It also strips href/src attributes with unsafe protocols like + # <tt>javascript:</tt>, while also protecting against attempts to use Unicode, + # ASCII, and hex character references to work around these protocol filters. # - # <%= sanitize @article.body %> + # The default sanitizer is Rails::Html::WhiteListSanitizer. See {Rails HTML + # Sanitizers}[https://github.com/rails/rails-html-sanitizer] for more information. # - # You can add or remove tags/attributes if you want to customize it a bit. - # See ActionView::Base for full docs on the available options. You can add - # tags/attributes for single uses of +sanitize+ by passing either the - # <tt>:attributes</tt> or <tt>:tags</tt> options: + # Custom sanitization rules can also be provided. # - # Normal Use - # - # <%= sanitize @article.body %> + # Please note that sanitizing user-provided text does not guarantee that the + # resulting markup is valid or even well-formed. For example, the output may still + # contain unescaped characters like <tt><</tt>, <tt>></tt>, or <tt>&</tt>. # - # Custom Use - Custom Scrubber - # (supply a Loofah::Scrubber that does the sanitization) + # ==== Options # - # scrubber can either wrap a block: - # scrubber = Loofah::Scrubber.new do |node| - # node.text = "dawn of cats" - # end + # * <tt>:tags</tt> - An array of allowed tags. + # * <tt>:attributes</tt> - An array of allowed attributes. + # * <tt>:scrubber</tt> - A {Rails::Html scrubber}[https://github.com/rails/rails-html-sanitizer] + # or {Loofah::Scrubber}[https://github.com/flavorjones/loofah] object that + # defines custom sanitization rules. A custom scrubber takes precedence over + # custom tags and attributes. # - # or be a subclass of Loofah::Scrubber which responds to scrub: - # class KittyApocalypse < Loofah::Scrubber - # def scrub(node) - # node.text = "dawn of cats" - # end - # end - # scrubber = KittyApocalypse.new + # ==== Examples # - # <%= sanitize @article.body, scrubber: scrubber %> + # Normal use: # - # A custom scrubber takes precedence over custom tags and attributes - # Learn more about scrubbers here: https://github.com/flavorjones/loofah + # <%= sanitize @comment.body %> # - # Custom Use - tags and attributes - # (only the mentioned tags and attributes are allowed, nothing else) + # Providing custom whitelisted tags and attributes: # - # <%= sanitize @article.body, tags: %w(table tr td), attributes: %w(id class style) %> + # <%= sanitize @comment.body, tags: %w(strong em a), attributes: %w(href) %> # - # Add table tags to the default allowed tags + # Providing a custom Rails::Html scrubber: # - # class Application < Rails::Application - # config.action_view.sanitized_allowed_tags = ['table', 'tr', 'td'] - # end + # class CommentScrubber < Rails::Html::PermitScrubber + # def allowed_node?(node) + # !%w(form script comment blockquote).include?(node.name) + # end # - # Remove tags to the default allowed tags + # def skip_node?(node) + # node.text? + # end # - # class Application < Rails::Application - # config.after_initialize do - # ActionView::Base.sanitized_allowed_tags.delete 'div' + # def scrub_attribute?(name) + # name == 'style' # end # end # - # Change allowed default attributes + # <%= sanitize @comment.body, scrubber: CommentScrubber.new %> + # + # See {Rails HTML Sanitizer}[https://github.com/rails/rails-html-sanitizer] for + # documentation about Rails::Html scrubbers. # - # class Application < Rails::Application - # config.action_view.sanitized_allowed_attributes = ['id', 'class', 'style'] + # Providing a custom Loofah::Scrubber: + # + # scrubber = Loofah::Scrubber.new do |node| + # node.remove if node.name == 'script' # end # - # Please note that sanitizing user-provided text does not guarantee that the - # resulting markup is valid (conforming to a document type) or even well-formed. - # The output may still contain e.g. unescaped '<', '>', '&' characters and - # confuse browsers. + # <%= sanitize @comment.body, scrubber: scrubber %> + # + # See {Loofah's documentation}[https://github.com/flavorjones/loofah] for more + # information about defining custom Loofah::Scrubber objects. # + # To set the default allowed tags or attributes across your application: + # + # # In config/application.rb + # config.action_view.sanitized_allowed_tags = ['strong', 'em', 'a'] + # config.action_view.sanitized_allowed_attributes = ['href', 'title'] def sanitize(html, options = {}) self.class.white_list_sanitizer.sanitize(html, options).try(:html_safe) end @@ -87,9 +88,7 @@ module ActionView self.class.white_list_sanitizer.sanitize_css(style) end - # Strips all HTML tags from the +html+, including comments. This uses - # Nokogiri for tokenization (via Loofah) and so its HTML parsing ability - # is limited by that of Nokogiri. + # Strips all HTML tags from +html+, including comments. # # strip_tags("Strip <i>these</i> tags!") # # => Strip these tags! @@ -103,7 +102,7 @@ module ActionView self.class.full_sanitizer.sanitize(html) end - # Strips all link tags from +text+ leaving just the link text. + # Strips all link tags from +html+ leaving just the link text. # # strip_links('<a href="http://www.rubyonrails.org">Ruby on Rails</a>') # # => Ruby on Rails @@ -166,30 +165,6 @@ module ActionView def white_list_sanitizer @white_list_sanitizer ||= sanitizer_vendor.white_list_sanitizer.new end - - ## - # :method: sanitized_allowed_tags= - # - # :call-seq: sanitized_allowed_tags=(tags) - # - # Replaces the allowed tags for the +sanitize+ helper. - # - # class Application < Rails::Application - # config.action_view.sanitized_allowed_tags = ['table', 'tr', 'td'] - # end - # - - ## - # :method: sanitized_allowed_attributes= - # - # :call-seq: sanitized_allowed_attributes=(attributes) - # - # Replaces the allowed HTML attributes for the +sanitize+ helper. - # - # class Application < Rails::Application - # config.action_view.sanitized_allowed_attributes = ['onclick', 'longdesc'] - # end - # end end end diff --git a/actionview/lib/action_view/helpers/tags.rb b/actionview/lib/action_view/helpers/tags.rb index 45c75d10c0..a4f6eb0150 100644 --- a/actionview/lib/action_view/helpers/tags.rb +++ b/actionview/lib/action_view/helpers/tags.rb @@ -5,6 +5,7 @@ module ActionView eager_autoload do autoload :Base + autoload :Translator autoload :CheckBox autoload :CollectionCheckBoxes autoload :CollectionRadioButtons diff --git a/actionview/lib/action_view/helpers/tags/base.rb b/actionview/lib/action_view/helpers/tags/base.rb index 7740c60eac..acc6443a96 100644 --- a/actionview/lib/action_view/helpers/tags/base.rb +++ b/actionview/lib/action_view/helpers/tags/base.rb @@ -14,7 +14,7 @@ module ActionView @object_name.sub!(/\[\]$/,"") || @object_name.sub!(/\[\]\]$/,"]") @object = retrieve_object(options.delete(:object)) @options = options - @auto_index = retrieve_autoindex(Regexp.last_match.pre_match) if Regexp.last_match + @auto_index = Regexp.last_match ? retrieve_autoindex(Regexp.last_match.pre_match) : nil end # This is what child classes implement. @@ -79,35 +79,30 @@ module ActionView end def add_default_name_and_id(options) - if options.has_key?("index") - options["name"] ||= options.fetch("name"){ tag_name_with_index(options["index"], options["multiple"]) } - options["id"] = options.fetch("id"){ tag_id_with_index(options["index"]) } - options.delete("index") - elsif defined?(@auto_index) - options["name"] ||= options.fetch("name"){ tag_name_with_index(@auto_index, options["multiple"]) } - options["id"] = options.fetch("id"){ tag_id_with_index(@auto_index) } - else - options["name"] ||= options.fetch("name"){ tag_name(options["multiple"]) } - options["id"] = options.fetch("id"){ tag_id } + index = name_and_id_index(options) + options["name"] = options.fetch("name"){ tag_name(options["multiple"], index) } + options["id"] = options.fetch("id"){ tag_id(index) } + if namespace = options.delete("namespace") + options['id'] = options['id'] ? "#{namespace}_#{options['id']}" : namespace end - - options["id"] = [options.delete('namespace'), options["id"]].compact.join("_").presence - end - - def tag_name(multiple = false) - "#{@object_name}[#{sanitized_method_name}]#{"[]" if multiple}" - end - - def tag_name_with_index(index, multiple = false) - "#{@object_name}[#{index}][#{sanitized_method_name}]#{"[]" if multiple}" end - def tag_id - "#{sanitized_object_name}_#{sanitized_method_name}" + def tag_name(multiple = false, index = nil) + # a little duplication to construct less strings + if index + "#{@object_name}[#{index}][#{sanitized_method_name}]#{"[]" if multiple}" + else + "#{@object_name}[#{sanitized_method_name}]#{"[]" if multiple}" + end end - def tag_id_with_index(index) - "#{sanitized_object_name}_#{index}_#{sanitized_method_name}" + def tag_id(index = nil) + # a little duplication to construct less strings + if index + "#{sanitized_object_name}_#{index}_#{sanitized_method_name}" + else + "#{sanitized_object_name}_#{sanitized_method_name}" + end end def sanitized_object_name @@ -149,6 +144,10 @@ module ActionView end option_tags end + + def name_and_id_index(options) + options.key?("index") ? options.delete("index") || "" : @auto_index + end end end end diff --git a/actionview/lib/action_view/helpers/tags/collection_check_boxes.rb b/actionview/lib/action_view/helpers/tags/collection_check_boxes.rb index 6242a2a085..1765fa6558 100644 --- a/actionview/lib/action_view/helpers/tags/collection_check_boxes.rb +++ b/actionview/lib/action_view/helpers/tags/collection_check_boxes.rb @@ -41,14 +41,7 @@ module ActionView end def hidden_field - hidden_name = @html_options[:name] - - hidden_name ||= if @options.has_key?(:index) - "#{tag_name_with_index(@options[:index])}[]" - else - "#{tag_name}[]" - end - + hidden_name = @html_options[:name] || "#{tag_name(false, @options[:index])}[]" @template_object.hidden_field_tag(hidden_name, "", id: nil) end end diff --git a/actionview/lib/action_view/helpers/tags/label.rb b/actionview/lib/action_view/helpers/tags/label.rb index 08a23e497e..b31d5fda66 100644 --- a/actionview/lib/action_view/helpers/tags/label.rb +++ b/actionview/lib/action_view/helpers/tags/label.rb @@ -15,20 +15,10 @@ module ActionView def translation method_and_value = @tag_value.present? ? "#{@method_name}.#{@tag_value}" : @method_name - @object_name.gsub!(/\[(.*)_attributes\]\[\d+\]/, '.\1') - - if object.respond_to?(:to_model) - key = object.model_name.i18n_key - i18n_default = ["#{key}.#{method_and_value}".to_sym, ""] - end - - i18n_default ||= "" - content = I18n.t("#{@object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.label").presence - - content ||= if object && object.class.respond_to?(:human_attribute_name) - object.class.human_attribute_name(method_and_value) - end + content ||= Translator + .new(object, @object_name, method_and_value, scope: "helpers.label") + .translate content ||= @method_name.humanize content diff --git a/actionview/lib/action_view/helpers/tags/placeholderable.rb b/actionview/lib/action_view/helpers/tags/placeholderable.rb index ae67bc13af..cf7b117614 100644 --- a/actionview/lib/action_view/helpers/tags/placeholderable.rb +++ b/actionview/lib/action_view/helpers/tags/placeholderable.rb @@ -7,24 +7,12 @@ module ActionView if tag_value = @options[:placeholder] placeholder = tag_value if tag_value.is_a?(String) - - object_name = @object_name.gsub(/\[(.*)_attributes\]\[\d+\]/, '.\1') method_and_value = tag_value.is_a?(TrueClass) ? @method_name : "#{@method_name}.#{tag_value}" - if object.respond_to?(:to_model) - key = object.class.model_name.i18n_key - i18n_default = ["#{key}.#{method_and_value}".to_sym, ""] - end - - i18n_default ||= "" - placeholder ||= I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.placeholder").presence - - placeholder ||= if object && object.class.respond_to?(:human_attribute_name) - object.class.human_attribute_name(method_and_value) - end - + placeholder ||= Tags::Translator + .new(object, @object_name, method_and_value, scope: "helpers.placeholder") + .translate placeholder ||= @method_name.humanize - @options[:placeholder] = placeholder end end diff --git a/actionview/lib/action_view/helpers/tags/translator.rb b/actionview/lib/action_view/helpers/tags/translator.rb new file mode 100644 index 0000000000..8b6655481d --- /dev/null +++ b/actionview/lib/action_view/helpers/tags/translator.rb @@ -0,0 +1,40 @@ +module ActionView + module Helpers + module Tags # :nodoc: + class Translator # :nodoc: + def initialize(object, object_name, method_and_value, scope:) + @object_name = object_name.gsub(/\[(.*)_attributes\]\[\d+\]/, '.\1') + @method_and_value = method_and_value + @scope = scope + @model = object.respond_to?(:to_model) ? object.to_model : nil + end + + def translate + translated_attribute = I18n.t("#{object_name}.#{method_and_value}", default: i18n_default, scope: scope).presence + translated_attribute || human_attribute_name + end + + protected + + attr_reader :object_name, :method_and_value, :scope, :model + + private + + def i18n_default + if model + key = model.model_name.i18n_key + ["#{key}.#{method_and_value}".to_sym, ""] + else + "" + end + end + + def human_attribute_name + if model && model.class.respond_to?(:human_attribute_name) + model.class.human_attribute_name(method_and_value) + end + end + end + end + end +end diff --git a/actionview/lib/action_view/helpers/url_helper.rb b/actionview/lib/action_view/helpers/url_helper.rb index 8c2d5705f1..3dbce0738e 100644 --- a/actionview/lib/action_view/helpers/url_helper.rb +++ b/actionview/lib/action_view/helpers/url_helper.rb @@ -46,9 +46,9 @@ module ActionView end protected :_back_url - # Creates a link tag of the given +name+ using a URL created by the set of +options+. + # Creates an anchor element of the given +name+ using a URL created by the set of +options+. # See the valid options in the documentation for +url_for+. It's also possible to - # pass a String instead of an options hash, which generates a link tag that uses the + # pass a String instead of an options hash, which generates an anchor element that uses the # value of the String as the href for the link. Using a <tt>:back</tt> Symbol instead # of an options hash will generate a link to the referrer (a JavaScript back link # will be used in place of a referrer if none exists). If +nil+ is passed as the name @@ -459,7 +459,7 @@ module ActionView html_options = (html_options || {}).stringify_keys extras = %w{ cc bcc body subject reply_to }.map! { |item| - option = html_options.delete(item) || next + option = html_options.delete(item).presence || next "#{item.dasherize}=#{Rack::Utils.escape_path(option)}" }.compact extras = extras.empty? ? '' : '?' + extras.join('&') |