diff options
Diffstat (limited to 'actionview/lib/action_view/helpers')
5 files changed, 40 insertions, 13 deletions
diff --git a/actionview/lib/action_view/helpers/cache_helper.rb b/actionview/lib/action_view/helpers/cache_helper.rb index 251764a8de..72e2aa1807 100644 --- a/actionview/lib/action_view/helpers/cache_helper.rb +++ b/actionview/lib/action_view/helpers/cache_helper.rb @@ -39,7 +39,7 @@ module ActionView # This will include both records as part of the cache key and updating either of them will # expire the cache. # - # ==== Template digest + # ==== \Template digest # # The template digest that's added to the cache key is computed by taking an md5 of the # contents of the entire template file. This ensures that your caches will automatically @@ -75,7 +75,7 @@ module ActionView # render(topics) => render("topics/topic") # render(message.topics) => render("topics/topic") # - # It's not possible to derive all render calls like that, though. + # It's not possible to derive all render calls like that, though. # Here are a few examples of things that can't be derived: # # render group_of_attachments @@ -98,14 +98,14 @@ module ActionView # <%# Template Dependency: todolists/todolist %> # <%= render_sortable_todolists @project.todolists %> # - # The pattern used to match these is /# Template Dependency: ([^ ]+)/, + # The pattern used to match these is <tt>/# Template Dependency: (\S+)/</tt>, # so it's important that you type it out just so. # You can only declare one template dependency per line. # # === External dependencies # - # If you use a helper method, for example, inside a cached block and - # you then update that helper, you'll have to bump the cache as well. + # If you use a helper method, for example, inside a cached block and + # you then update that helper, you'll have to bump the cache as well. # It doesn't really matter how you do it, but the md5 of the template file # must change. One recommendation is to simply be explicit in a comment, like: # @@ -130,8 +130,8 @@ module ActionView # The collection can then automatically use any cached renders for that # template by reading them at once instead of one by one. # - # See ActionView::Template::Handlers::ERB.resource_cache_call_pattern for - # more information on what cache calls make a template eligible for this + # See ActionView::Template::Handlers::ERB.resource_cache_call_pattern for + # more information on what cache calls make a template eligible for this # collection caching. # # The automatic cache multi read can be turned off like so: diff --git a/actionview/lib/action_view/helpers/date_helper.rb b/actionview/lib/action_view/helpers/date_helper.rb index 46ce7cf0be..394e20ff2b 100644 --- a/actionview/lib/action_view/helpers/date_helper.rb +++ b/actionview/lib/action_view/helpers/date_helper.rb @@ -488,7 +488,7 @@ module ActionView # selected. The <tt>datetime</tt> can be either a +Time+ or +DateTime+ object or an integer. # Override the field name using the <tt>:field_name</tt> option, 'minute' by default. # - # my_time = Time.now + 6.hours + # my_time = Time.now + 10.minutes # # # Generates a select field for minutes that defaults to the minutes for the time in my_time. # select_minute(my_time) diff --git a/actionview/lib/action_view/helpers/form_options_helper.rb b/actionview/lib/action_view/helpers/form_options_helper.rb index 38fee3b314..1b7b188d65 100644 --- a/actionview/lib/action_view/helpers/form_options_helper.rb +++ b/actionview/lib/action_view/helpers/form_options_helper.rb @@ -410,7 +410,7 @@ module ActionView # * +collection+ - An array of objects representing the <tt><optgroup></tt> tags. # * +group_method+ - The name of a method which, when called on a member of +collection+, returns an # array of child objects representing the <tt><option></tt> tags. - # * group_label_method+ - The name of a method which, when called on a member of +collection+, returns a + # * +group_label_method+ - The name of a method which, when called on a member of +collection+, returns a # string to be used as the +label+ attribute for its <tt><optgroup></tt> tag. # * +option_key_method+ - The name of a method which, when called on a child object of a member of # +collection+, returns a value to be used as the +value+ attribute for its <tt><option></tt> tag. @@ -707,6 +707,27 @@ module ActionView # collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) do |b| # b.label(:"data-value" => b.value) { b.check_box + b.text } # end + # + # ==== Gotcha + # + # When no selection is made for a collection of checkboxes most + # web browsers will not send any value. + # + # For example, if we have a +User+ model with +category_ids+ field and we + # have the following code in our update action: + # + # @user.update(params[:user]) + # + # If no +category_ids+ are selected then we can safely assume this field + # will not be updated. + # + # This is possible thanks to a hidden field generated by the helper method + # for every collection of checkboxes. + # This hidden field is given the same field name as the checkboxes with a + # blank value. + # + # In the rare case you don't want this hidden field, you can pass the + # <tt>include_hidden: false</tt> option to the helper method. def collection_check_boxes(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block) Tags::CollectionCheckBoxes.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block) end diff --git a/actionview/lib/action_view/helpers/number_helper.rb b/actionview/lib/action_view/helpers/number_helper.rb index ca8d30e4ef..13effa592d 100644 --- a/actionview/lib/action_view/helpers/number_helper.rb +++ b/actionview/lib/action_view/helpers/number_helper.rb @@ -279,7 +279,7 @@ module ActionView # See <tt>number_to_human_size</tt> if you want to print a file # size. # - # You can also define you own unit-quantifier names if you want + # You can also define your own unit-quantifier names if you want # to use other decimal units (eg.: 1500 becomes "1.5 # kilometers", 0.150 becomes "150 milliliters", etc). You may # define a wide range of unit quantifiers, even fractional ones diff --git a/actionview/lib/action_view/helpers/tags/base.rb b/actionview/lib/action_view/helpers/tags/base.rb index acc6443a96..d57f26ba4f 100644 --- a/actionview/lib/action_view/helpers/tags/base.rb +++ b/actionview/lib/action_view/helpers/tags/base.rb @@ -120,7 +120,12 @@ module ActionView def select_content_tag(option_tags, options, html_options) html_options = html_options.stringify_keys add_default_name_and_id(html_options) - options[:include_blank] ||= true unless options[:prompt] || select_not_required?(html_options) + + if placeholder_required?(html_options) + raise ArgumentError, "include_blank cannot be false for a required field." if options[:include_blank] == false + options[:include_blank] ||= true unless options[:prompt] + end + value = options.fetch(:selected) { value(object) } select = content_tag("select", add_options(option_tags, options, value), html_options) @@ -131,8 +136,9 @@ module ActionView end end - def select_not_required?(html_options) - !html_options["required"] || html_options["multiple"] || html_options["size"].to_i > 1 + def placeholder_required?(html_options) + # See https://html.spec.whatwg.org/multipage/forms.html#attr-select-required + html_options["required"] && !html_options["multiple"] && html_options.fetch("size", 1).to_i == 1 end def add_options(option_tags, options, value = nil) |