rails--rails/actionpack/lib/action_view/template.rb

98 lines
2.7 KiB
Ruby

module ActionView #:nodoc:
class Template #:nodoc:
extend TemplateHandlers
attr_accessor :locals
attr_reader :handler, :path, :extension, :filename, :method
def initialize(view, path, use_full_path = nil, locals = {})
unless use_full_path == nil
ActiveSupport::Deprecation.warn("use_full_path option has been deprecated and has no affect.", caller)
end
@view = view
@paths = view.view_paths
@original_path = path
@path = TemplateFile.from_path(path)
@view.first_render ||= @path.to_s
@source = nil # Don't read the source until we know that it is required
set_extension_and_file_name
@locals = locals || {}
@handler = self.class.handler_class_for_extension(@extension).new(@view)
end
def render_template
render
rescue Exception => e
raise e unless filename
if TemplateError === e
e.sub_template_of(filename)
raise e
else
raise TemplateError.new(self, @view.assigns, e)
end
end
def render
prepare!
@handler.render(self)
end
def path_without_extension
@path.path_without_extension
end
def source
@source ||= File.read(self.filename)
end
def method_key
@filename
end
def base_path_for_exception
(@paths.find_load_path_for_path(@path) || @paths.first).to_s
end
def prepare!
@view.send :evaluate_assigns
@view.current_render_extension = @extension
if @handler.compilable?
@handler.compile_template(self) # compile the given template, if necessary
@method = @view.method_names[method_key] # Set the method name for this template and run it
end
end
private
def set_extension_and_file_name
@extension = @path.extension
unless @extension
@path = @view.send(:template_file_from_name, @path)
raise_missing_template_exception unless @path
@extension = @path.extension
end
if p = @paths.find_template_file_for_path(path)
@path = p
@filename = @path.full_path
@extension = @path.extension
raise_missing_template_exception if @filename.blank?
else
@filename = @original_path
raise_missing_template_exception unless File.exist?(@filename)
end
end
def raise_missing_template_exception
full_template_path = @original_path.include?('.') ? @original_path : "#{@original_path}.#{@view.template_format}.erb"
display_paths = @paths.join(':')
template_type = (@original_path =~ /layouts/i) ? 'layout' : 'template'
raise(MissingTemplate, "Missing #{template_type} #{full_template_path} in view path #{display_paths}")
end
end
end