Class: TemplateBinding
- Inherits:
-
BaseBinding
- Object
- BaseBinding
- TemplateBinding
- Defined in:
- lib/volt/page/bindings/template_binding.rb
Direct Known Subclasses
Instance Attribute Summary
Attributes inherited from BaseBinding
#binding_name, #context, #target
Instance Method Summary collapse
- #call_ready ⇒ Object
-
#check_for_template?(path) ⇒ Boolean
Returns true if there is a template at the path.
-
#initialize(page, target, context, binding_name, binding_in_path, getter) ⇒ TemplateBinding
constructor
A new instance of TemplateBinding.
-
#path_for_template(lookup_path, force_section = nil) ⇒ Object
Takes in a lookup path and returns the full path for the matching template.
-
#queue_update ⇒ Object
Called when the path changes.
- #remove ⇒ Object
-
#render_template(full_path, controller_path) ⇒ Object
The context for templates can be either a controller, or the original context.
- #setup_path(binding_in_path) ⇒ Object
- #update ⇒ Object
Methods inherited from BaseBinding
#dom_section, #remove_anchors, #value_from_getter
Constructor Details
#initialize(page, target, context, binding_name, binding_in_path, getter) ⇒ TemplateBinding
Returns a new instance of TemplateBinding.
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 |
# File 'lib/volt/page/bindings/template_binding.rb', line 6 def initialize(page, target, context, binding_name, binding_in_path, getter) super(page, target, context, binding_name) # Binding in path is the path for the template this binding is in setup_path(binding_in_path) @current_template = nil # Find the source for the getter binding @path, section, @options = value_from_getter(getter) if section.is_a?(String) # Render this as a section @section = section else # Use the value passed in as the default arguments @arguments = section end # Sometimes we want multiple template bindings to share the same controller (usually # when displaying a :Title and a :Body), this instance tracks those. if @options && (controller_group = @options[:controller_group]) @grouped_controller = GroupedControllers.new(controller_group) end # Run the initial render update @path_changed_listener = @path.on('changed') { queue_update } if @path.reactive? @section_changed_listener = @section.on('changed') { queue_update } if @section && @section.reactive? end |
Instance Method Details
#call_ready ⇒ Object
172 173 174 175 176 177 178 179 180 181 182 183 184 |
# File 'lib/volt/page/bindings/template_binding.rb', line 172 def call_ready if @controller # Set the current section on the controller if it wants so it can manipulate # the dom if needed if @controller.respond_to?(:section=) @controller.section = @current_template.dom_section end if @controller.respond_to?(:dom_ready) @controller.dom_ready end end end |
#check_for_template?(path) ⇒ Boolean
Returns true if there is a template at the path
46 47 48 |
# File 'lib/volt/page/bindings/template_binding.rb', line 46 def check_for_template?(path) @page.templates[path] end |
#path_for_template(lookup_path, force_section = nil) ⇒ Object
Takes in a lookup path and returns the full path for the matching template. Also returns the controller and action name if applicable.
Looking up a path is fairly simple. There are 4 parts needed to find the html to be rendered. File paths look like this: app/component/views/controller_name/view.html Within the html file may be one or more sections.
-
component (app/comp)
-
controller
-
view
-
sections
When searching for a file, the lookup starts at the section, and moves up. when moving up, default values are provided for the section, then view/section, etc.. until a file is either found or the component level is reached.
The defaults are as follows:
-
component - main
-
controller - main
-
view - main
-
section - body
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 |
# File 'lib/volt/page/bindings/template_binding.rb', line 71 def path_for_template(lookup_path, force_section=nil) parts = lookup_path.split('/') parts_size = parts.size default_parts = ['main', 'main', 'index', 'body'] # When forcing a sub template, we can default the sub template section default_parts[-1] = force_section if force_section (5 - parts_size).times do |path_position| # If they passed in a force_section, we can skip the first next if force_section && path_position == 0 full_path = [@collection_name, @controller_name, @page_name, nil] start_at = full_path.size - parts_size - path_position full_path.size.times do |index| if index >= start_at if part = parts[index-start_at] full_path[index] = part else full_path[index] = default_parts[index] end end end path = full_path.join('/') if check_for_template?(path) controller = nil # Don't return a controller if we are just getting another section # from the same controller if path_position >= 1 # Lookup the controller controller = [full_path[0], full_path[1] + '_controller', full_path[2]] end return path, controller end end return nil, nil end |
#queue_update ⇒ Object
Called when the path changes. If we are sharing a controller, clear the cached controller before we queue
117 118 119 120 121 |
# File 'lib/volt/page/bindings/template_binding.rb', line 117 def queue_update @grouped_controller.clear if @grouped_controller super end |
#remove ⇒ Object
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 |
# File 'lib/volt/page/bindings/template_binding.rb', line 186 def remove @grouped_controller.clear if @grouped_controller if @path_changed_listener @path_changed_listener.remove @path_changed_listener = nil end if @section_changed_listener @section_changed_listener.remove @section_changed_listener = nil end if @current_template # Remove the template if one has been rendered, when the template binding is # removed. @current_template.remove end super if @controller # Let the controller know we removed if @controller.respond_to?(:dom_removed) @controller.dom_removed end @controller = nil end end |
#render_template(full_path, controller_path) ⇒ Object
The context for templates can be either a controller, or the original context.
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 |
# File 'lib/volt/page/bindings/template_binding.rb', line 141 def render_template(full_path, controller_path) args = @arguments ? [@arguments] : [] @controller = nil # Fetch grouped controllers if we're grouping @controller = @grouped_controller.get if @grouped_controller # Otherwise, make a new controller unless @controller controller_class, action = get_controller(controller_path) if controller_class # Setup the controller @controller = controller_class.new(*args) else @controller = ModelController.new(*args) end # Trigger the action @controller.send(action) if @controller.respond_to?(action) # Track the grouped controller @grouped_controller.set(@controller) if @grouped_controller end @current_template = TemplateRenderer.new(@page, @target, @controller, @binding_name, full_path) call_ready end |
#setup_path(binding_in_path) ⇒ Object
38 39 40 41 42 43 |
# File 'lib/volt/page/bindings/template_binding.rb', line 38 def setup_path(binding_in_path) path_parts = binding_in_path.split('/') @collection_name = path_parts[0] @controller_name = path_parts[1] @page_name = path_parts[2] end |
#update ⇒ Object
123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 |
# File 'lib/volt/page/bindings/template_binding.rb', line 123 def update full_path, controller_path = path_for_template(@path.cur, @section.cur) @current_template.remove if @current_template if @arguments # Load in any procs @arguments.each_pair do |key,value| if value.class == Proc @arguments[key.gsub('-', '_')] = value.call end end end render_template(full_path, controller_path) end |