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author | Yehuda Katz <wycats@gmail.com> | 2009-01-22 16:18:10 -0600 |
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committer | Joshua Peek <josh@joshpeek.com> | 2009-01-22 16:18:10 -0600 |
commit | eb9af20b7cc0e374277cf330bdd404f9daab28ec (patch) | |
tree | ba05a906690684e442ed92db3e63e295f0dd133e /actionpack/lib/action_view/template/renderable.rb | |
parent | cc0b5fa9930dcc60914e21b518b3c54109243cfa (diff) | |
download | rails-eb9af20b7cc0e374277cf330bdd404f9daab28ec.tar.gz rails-eb9af20b7cc0e374277cf330bdd404f9daab28ec.tar.bz2 rails-eb9af20b7cc0e374277cf330bdd404f9daab28ec.zip |
Begin unifying the interface between ActionController and ActionView
Diffstat (limited to 'actionpack/lib/action_view/template/renderable.rb')
-rw-r--r-- | actionpack/lib/action_view/template/renderable.rb | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/template/renderable.rb b/actionpack/lib/action_view/template/renderable.rb new file mode 100644 index 0000000000..35c832aaba --- /dev/null +++ b/actionpack/lib/action_view/template/renderable.rb @@ -0,0 +1,74 @@ +module ActionView + # NOTE: The template that this mixin is being included into is frozen + # so you cannot set or modify any instance variables + module Renderable #:nodoc: + extend ActiveSupport::Memoizable + + def filename + 'compiled-template' + end + + def handler + Template.handler_class_for_extension(extension) + end + memoize :handler + + def compiled_source + handler.call(self) + end + memoize :compiled_source + + def method_name_without_locals + ['_run', extension, method_segment].compact.join('_') + end + memoize :method_name_without_locals + + def method_name(local_assigns) + if local_assigns && local_assigns.any? + method_name = method_name_without_locals.dup + method_name << "_locals_#{local_assigns.keys.map { |k| k.to_s }.sort.join('_')}" + else + method_name = method_name_without_locals + end + method_name.to_sym + end + + # Compile and evaluate the template's code (if necessary) + def compile(local_assigns) + render_symbol = method_name(local_assigns) + + if !Base::CompiledTemplates.method_defined?(render_symbol) || recompile? + compile!(render_symbol, local_assigns) + end + end + + private + def compile!(render_symbol, local_assigns) + locals_code = local_assigns.keys.map { |key| "#{key} = local_assigns[:#{key}];" }.join + + source = <<-end_src + def #{render_symbol}(local_assigns) + old_output_buffer = output_buffer;#{locals_code};#{compiled_source} + ensure + self.output_buffer = old_output_buffer + end + end_src + + begin + ActionView::Base::CompiledTemplates.module_eval(source, filename, 0) + rescue Exception => e # errors from template code + if logger = defined?(ActionController) && Base.logger + logger.debug "ERROR: compiling #{render_symbol} RAISED #{e}" + logger.debug "Function body: #{source}" + logger.debug "Backtrace: #{e.backtrace.join("\n")}" + end + + raise ActionView::TemplateError.new(self, {}, e) + end + end + + def recompile? + false + end + end +end |