Module: Roda::RodaPlugins::ContentFor::InstanceMethods

Defined in:
lib/roda/plugins/content_for.rb

Instance Method Summary collapse

Instance Method Details

#content_for(key, value = nil, &block) ⇒ Object

If called with a block, store content enclosed by block under the given key. If called without a block, retrieve stored content with the given key, or return nil if there is no content stored with that key.



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# File 'lib/roda/plugins/content_for.rb', line 55

def content_for(key, value=nil, &block)
  append = opts[:append_content_for]

  if block || value
    if block
      outvar = render_opts[:template_opts][:outvar]
      buf_was = instance_variable_get(outvar)

      # Use temporary output buffer for ERB-based rendering systems
      instance_variable_set(outvar, String.new)
      value = Tilt[render_opts[:engine]].new(&block).render
      instance_variable_set(outvar, buf_was)
    end

    @_content_for ||= {}

    if append
      (@_content_for[key] ||= []) << value
    else
      if @_content_for[key] && append.nil?
        RodaPlugins.warn "Attempt to set content_for with same key.  This currently overwrites the existing content_for for #{key}.  In Roda 3, it will start appending to the existing content_for by default.  Use the :append => false option to the content_for plugin to keep the existing behavior."
      end
      @_content_for[key] = value
    end
  elsif @_content_for && (value = @_content_for[key])
    if append
      value = value.join
    end

    value
  end
end