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module Cell
class ViewModel
# Set the layout per cell class. This is used in #render calls. Gets inherited to subclasses.
module Layout
def self.included(base)
base.extend ClassMethods
base.inheritable_attr :layout_name
end
module ClassMethods
def layout(name)
self.layout_name = name
end
end
private
def process_options!(options)
options[:layout] ||= self.class.layout_name
super
end
def render_to_string(options, &block)
with_layout(options, super)
end
def with_layout(options, content)
return content unless layout = options[:layout]
render_layout(layout, options, content)
end
def render_layout(name, options, content)
template = find_template(options.merge view: name) # we could also allow a different layout engine, etc.
render_template(template, options) { content }
end
# Allows using a separate layout cell which will wrap the actual content.
# Use like cell(..., layout: Cell::Layout)
#
# Note that still allows the `render layout: :application` option.
module External
def call(*)
content = super
Render.(content, model, @options[:layout], @options)
end
Render = ->(content, model, layout, options) do # WARNING: THIS IS NOT FINAL API.
return content unless layout = layout # TODO: test when invoking cell without :layout.
# DISCUSS: should we allow instances, too? we could cache the layout cell.
layout.new(model, context: options[:context]).(&lambda { content })
end
end # External
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems