# # This module provides several helper methods for rendering the CMS contents and enabling the # in-place editing. # # @api public # module ScrivitoHelper include Scrivito::ControllerHelper # # Renders a field within the given HTML tag. # # This method also renders additional attributes, which are needed for in-place editing. # These attributes are only rendered when appropriate, i.e. not for a regular visitor. # # The helper is similar to (and internally uses) # http://api.rubyonrails.org/classes/ActionView/Helpers/TagHelper.html#method-i-content_tag. # You can add additional HTML attributes by passing them in +html_options+. # # @api public # # @note If the param +field_name+ is of type +widget+, then +tag_name+ must be a block tag, # like +div+ or +h1+. An inline tag like +p+ or +span+ could result in broken HTML output, since # the widgets are rendered within block tags. # # @param tag_name [String, Symbol] Name of the HTML tag (e.g. +:h1+ or +:div+). # If the param +field_name+ is of type +widget+, then +tag_name+ must be a block tag, # like +div+ or +h1+. An inline tag like +p+ or +span+ could result in broken HTML output, since # the widgets are rendered within block tags. # @param obj_or_widget [Scrivito::BasicObj, Scrivito::BasicWidget] A {Scrivito::BasicObj} # or {Scrivito::BasicWidget} from which the +field_name+ is read. # @param field_name [String, Symbol] Which field of the Obj should be rendered. # @param html_options [Hash] HTML options to be passed to +content_tag+. # # @param editing_options [Hash] Additional editing options for widgets (e.g. +:inner_tag+) # @option editing_options [Symbol] :inner_tag Wraps widgets inside specified tag # @option editing_options [String, Symbol] :editor Name of the JavaScript editor to be used for # this field. Normally, the name of the editor to be used for a field is determined by the # +scrivito.select_editor+ JavaScript API. The option +:editor+ should only be used if setting # the editor via the JavaScript API is not feasible. Specifying +editor: false+ disables # in-place editing. # # @param block [Proc] Optional block to render inner HTML. If none given the value of attribute # will be rendered instead. +block+ is not allowed for fields of type +widget+. # # @raise ArgumentError if the field behind +field_name+ is of type +widget+ and a +block+ is given. # # @return [String] The rendered HTML tag. # # @example Renders an

tag containing the text of the +headline+ attribute of +@obj+ and assigns the tag a css class called +very_important+ # scrivito_tag(:h2, @obj, :headline, class: "very_important") # # @example Renders an

tag containing a truncated +headline+ of the +widget+ # scrivito_tag(:h2, widget, :headline) do # truncate(widget.headline) # end # # @example Render a download link for a PDF document # scrivito_tag(:div, @obj, :pdf) do # if @obj.pdf # "Download: #{link_to(@obj.pdf.filename, @obj.pdf.url)}" # elsif scrivito_user # "Drop PDF here to upload" # end # end # # @example Render widgetlist inside an +ul+ tag with the individual widgets inside of +li+ tags. # scrivito_tag(:ul, @obj, :body, {}, inner_tag: :li) # def scrivito_tag(tag_name, obj_or_widget, field_name, html_options = {}, editing_options = {}, &block) Scrivito::CmsFieldTag.new(self, tag_name, obj_or_widget, editing_options.merge( widget_render_context: @scrivito_widget_render_context, field_name: field_name.to_s )).render(html_options, &block) end # # Renders a navigation ready for in-place editing. # # @api public # # If a navigation is rendered using this helper method, a special menu is attached to it that lets # you change the order of the child pages or insert a new child. # # For making the child pages sortable, the parent {Scrivito::BasicObj Obj} requires a # +referencelist+ attribute named +child_order+. When creating a page model using the page # generator, such an attribute is automatically added to the model. # # @param tag_name [String, Symbol] Name of the outer HTML tag (e.g. +:ul+ or +:div+). # @param obj [Scrivito::BasicObj] The parent {Scrivito::BasicObj Obj}, on which +method_name+ will # be called in order to fetch the children. # @param method_name [String, Symbol] Name of the method to be called on the parent # {Scrivito::BasicObj Obj} in order to fetch the children. Currently, only +toclist+ is # supported. # @param options [Hash] Options to be passed to +content_tag+. Use them to add HTML attributes to # the tag. # # @yieldparam [Scrivito::ChildListTag::ObjTag] list An object on which the # {Scrivito::ChildListTag::ObjTag#tag tag} method should be called once per child to enable # in-place editing. # @yieldparam [Scrivito::BasicObj] child Each child of +toclist+. # # @return [String] The rendered HTML string. # # @see Scrivito::ChildListTag::ObjTag#tag # # @example Renders a navigation for an +@obj+ with two children in its +toclist+, whose titles are +"Toys"+ and +"Electronics"+ respectively: # scrivito_tag_list(:ul, @obj, :toclist, class: "my_list") do |list, child| # list.tag(:li, class: "my_list_element") do # link_to(scrivito_path(child)) do # scrivito_tag(:span, child, :title) # end # end # end # # # # # Basically, the rendered HTML will look like this: # # # # # # # def scrivito_tag_list(tag_name, obj, method_name, options = {}, &block) Scrivito::ChildListTag.new(tag_name, obj, method_name.to_s, self).render(options, &block) end # # Calculates an HTML image tag of an image stored in the CMS for inplace editing. # # @api public # # @note If you do not specify an HTML +alt+ attribute, the helper method will use # {Scrivito::BasicObj#alt_description Obj#alt_description} of the target object. # # @param [Obj] obj Obj with a +link_list+, +reference+, +link+ or +binary+ attribute # @param [String, Symbol, Hash] field_name_or_tag_options Name of +link_list+, +reference+, +link+, or +binary+ # attribute, which contains the image or additional HTML attributes for the tag. # The +field_name+ can be omitted for binary Objs and +blob+ will be used as default. # @param [Hash] tag_or_editing_options Additional HTML attributes for the tag or # the editing options if no +field_name+ was given # @param [Hash] editing_options Additional options for inplace editing # # @option editing_options [String] :placeholder ('scrivito/image_placeholder.gif') URL # or path to image to be displayed if target is missing # # @option editing_options [Hash] :transform if set, the displayed image will be transformed using # the definition in the given hash, see {Scrivito::Binary#transform}. # # @example # scrivito_image_tag(@obj, :my_linklist) # scrivito_image_tag(@obj, :my_linklist, alt: 'Interesting picture', class: 'my_image') # scrivito_image_tag(@obj, :my_linklist, {}, placeholder: image_path('my_placeholder.png')) # scrivito_image_tag(@obj, :my_linklist, {class: 'my_image'}, placeholder: 'http://placehold.it/350x150') # # @example Render an image tag for a reference attribute. # scrivito_image_tag(@obj, :my_reference) # # @example Render an image tag for a link attribute. # scrivito_image_tag(@obj, :my_link) # # @example Render an image tag for a binary attribute # scrivito_image_tag(@obj, :my_binary) # # @example Render an image tag for a binary Obj # scrivito_image_tag(@image) # # @example Render an image tag with an on-the-fly calculated thumbnail # scrivito_image_tag @obj, :my_binary, {}, transform: {width: 50, height: 50} # # @return [String] HTML image tag # # @raise [ScrivitoError] if +field_name+ is not set and Obj is not binary # def scrivito_image_tag(obj, field_name_or_tag_options=nil, tag_or_editing_options = {}, editing_options = {}) field_name, tag_options, editing_options = if field_name_or_tag_options.is_a?(Hash) [nil, field_name_or_tag_options, tag_or_editing_options] else [field_name_or_tag_options, tag_or_editing_options, editing_options] end if field_name.blank? if obj.binary? field_name = :blob else raise Scrivito::ScrivitoError, "when omitting `field_name' you have to pass a binary obj" end end options = Scrivito::ImageTag.new(self).options(obj, field_name, tag_options.with_indifferent_access, editing_options.with_indifferent_access) scrivito_tag('img', obj, field_name, options) end # # Renders an attribute value of a CMS model, taking its type into account. # # @api public # # Links inside +html+ attributes are rendered using the routing of the application. Values from # +string+ attributes are escaped. For other attribute types, a simple default representation is # rendered. # # @example # scrivito_value(@obj.title) # # @note Content rendered using this method will not be editable in the Scrivito UI. If you want # in-place editing, use {ScrivitoHelper#scrivito_tag} instead. # def scrivito_value(value) renderer = Scrivito::AttributeValueRenderer.new(self) case value when Scrivito::BasicWidget then render(template: value.show_view_path, locals: {widget: value}) when Scrivito::HtmlString then renderer.render_as_html(value) when String then renderer.render_as_string(value) when Time then renderer.render_as_date(value) else value end end # # Renders a field from the CMS. # # @api public # # @note Content rendered using this method will not be editable in the Scrivito UI. # If you want in-place editing, then please use {ScrivitoHelper#scrivito_tag} instead. # # @param obj [Scrivito::BasicObj] an +Obj+, whose field should be rendered. # @param field_name [String, Symbol] the field of +obj+ to be rendered. # # @example # scrivito_field(@obj, :title) # scrivito_field(@obj, 'headline') # def scrivito_field(obj, field_name) scrivito_value(obj[field_name]) end # # Thumbnail helper generates HTML for the page class selection dialog and the widget class selection dialog. # The generated HTML has appropriate DOM structure and CSS classes, which are compatible with the CSS of the SDK. # By using this helper you ensure, that the look of your thumbnails fits into the SDK's design. # # @api public # # @param title [String] title of the thumbnail, e.g. "Content Page" or "Image Widget". # @param icon [Symbol, String] icon of the thumbnail. # You can use one of the built-in icons or specify your own HTML. # There are following built-in icons: +:content+, +:headline+, +:image+, +:scrivito+ and +:text+. # If the name of the specyfied icon is unknown, then the default icon (+:scrivito+) will be displayed. # If you are speifying your own HTML string, then make sure it is HTML safe. # @param block [Proc] the description of the thumbnail. # # @example A simple thumbnail # scrivito_thumbnail('Content Page') do # 'A content page.' # end # # @example A thumbnail with a built-in icon # scrivito_thumbnail('Image Widget', :image) do # 'An image widget.' # end # # @example A thumbnail with custom icon HTML # scrivito_thumbnail('Blog', content_tag(:i, '', class: 'thumbnail-blog')) do # 'A blog post.' # end # def scrivito_thumbnail(title, icon = :scrivito, &block) if icon.is_a?(Symbol) icon_code = { content: '', headline: '', image: '', scrivito: '', text: '', }.fetch(icon, '') icon = content_tag(:i, icon_code.html_safe, class: 'scrivito_icon') end content_tag(:div, class: 'scrivito_editing_widget_preview') do capture do concat content_tag(:div, icon, class: 'scrivito_editing_widget_visualization') concat content_tag(:div, title, class: 'scrivito_editing_widget_title') concat content_tag(:div, class: 'scrivito_editing_widget_description', &block) end end end # # Attribute group helper generates HTML for page details dialog and widget details dialog. # The generated HTML has appropriate DOM structure and CSS classes, which are compatible with the CSS of the SDK. # By using this helper you ensure, that the look of your attribute groups fits into the SDK's design. # # @api public # # @param title [String] title of the attribute group. # @param block [Proc] content of the attribute group. # # @example # scrivito_details_for('Title and Category') do # concat scrivito_tag(:div, @obj, :title) # concat scrivito_tag(:div, @obj, :category) # end # # scrivito_details_for do # scrivito_tag(:div, @obj, :abstract) # end # def scrivito_details_for(title = nil, &block) content_tag(:div, class: 'scrivito_content_group') do capture do if title concat content_tag(:h3, title) end concat capture(&block) end end end # @!group Details Dialog Size # Set the size of the page and widget details dialog to +large+. # @example # scrivito_large_dialog do # scrivito_details_for('Title and Category') do # concat scrivito_tag(:div, @obj, :title) # concat scrivito_tag(:div, @obj, :category) # end # end # @param block [Proc] Block to render inner HTML. # @return [String] # @api public def scrivito_large_dialog(&block) Scrivito::DialogSizeHelper.render_dialog_with_size(self, 'large', &block) end # Set the size of the page and widget details dialog to +medium+ (default). # @example # scrivito_medium_dialog do # # see scrivito_large_dialog example # end # @param block [Proc] Block to render inner HTML. # @return [String] # @api public def scrivito_medium_dialog(&block) Scrivito::DialogSizeHelper.render_dialog_with_size(self, 'medium', &block) end # Set the size of the page and widget details dialog to +small+. # @example # scrivito_small_dialog do # # see scrivito_large_dialog example # end # @param block [Proc] Block to render inner HTML. # @return [String] # @api public def scrivito_small_dialog(&block) Scrivito::DialogSizeHelper.render_dialog_with_size(self, 'small', &block) end # @!endgroup # # Renders all tags needed in the HTML head. # @api public # def scrivito_head_tags layout_tags = Scrivito::LayoutTags.new(self) capture do concat layout_tags.editing_auth_warning concat layout_tags.generator_meta_tag end end # # Renders all tags needed in the HTML body. # @api public # def scrivito_body_tags Scrivito::LayoutTags.new(self).page_config(@obj) end { 'cms_image_tag' => 'scrivito_image_tag', 'cms_path' => 'scrivito_path', 'cms_tag' => 'scrivito_tag', 'cms_tag_list' => 'scrivito_tag_list', 'cms_url' => 'scrivito_url', 'display_field' => 'scrivito_field', 'display_value' => 'scrivito_value', 'render_widget' => 'scrivito_value', 'scrivito_after_content_tags' => 'scrivito_body_tags', 'scrivito_header_tags' => 'scrivito_head_tags', }.each_pair do |old_method_name, new_method_name| define_method(old_method_name) do |*args| raise %{ The helper method `#{old_method_name}' has been removed. Please use `#{new_method_name}' instead. } end end def inplace_editing_allowed? raise %{ The helper method `inplace_editing_allowed?' has been removed. Please use helper method `scrivito_user` instead. } end # @api public # # This method wraps Rails' built-in fragment caching to work with content delivered by Scrivito. # Fragment caching applies to computed parts of views and helps to improve performance. The # Rails guides provide an excellent introduction to caching if you haven't used it yet. # # The +scrivito_cache+ method extends built-in fragment caching so that cached # parts of a view are automatically recomputed when Scrivito content changes. The # fragments are only cached for the published content. In editable working copies # no caching takes place, and the fragments are computed for every request. # # @param key [String] a name describing the data to be cached. # @param options [Hash] a hash that enables further configuration of the fragment # cache. The options are passed to the +cache+ helper of Rails. See the Rails # {http://api.rubyonrails.org/classes/ActionView/Helpers/CacheHelper.html#method-i-cache documentation} # for details. def scrivito_cache(key, options=nil, &block) workspace = Scrivito::Workspace.current cache_if(workspace.published? && !scrivito_user, [workspace.cache_key, key], options, &block) end # # @api public # # This helper can be used in the +show.html.*+ template of widgets. It allows you to specify # attributes (including CSS classes) for the tag enclosing the widget. # # @param [Hash] html_options attributes for this tag. # # @example It should be wrapped around the entire template like this: # <%= scrivito_widget_tag class: 'my_class', data-very-funky: true do %> # <%= scrivito_image_tag widget, :image %> # <% end %> # def scrivito_widget_tag(html_options, &block) capture(&block).tap do @scrivito_widget_tag_html_options = html_options end end end