Class: FabulatorPage

Inherits:
Page
  • Object
show all
Defined in:
app/models/fabulator_page.rb

Constant Summary collapse

XML_PART_NAME =

need a reasonable name for the XML part

'extended'

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#c_state_machine ⇒ Object

Returns the value of attribute c_state_machine.



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# File 'app/models/fabulator_page.rb', line 13

def c_state_machine
  @c_state_machine
end

#inner_content ⇒ Object

Returns the value of attribute inner_content.



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# File 'app/models/fabulator_page.rb', line 2

def inner_content
  @inner_content
end

#resource_ln ⇒ Object

Returns the value of attribute resource_ln.



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# File 'app/models/fabulator_page.rb', line 13

def resource_ln
  @resource_ln
end

Instance Method Details

#cache? ⇒ Boolean

create tags to access filtered data in page display might also create tags for form fields, etc., so it’s easy to create a form and fill in data

Returns:

  • (Boolean) 


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# File 'app/models/fabulator_page.rb', line 19

def cache?
  false
end

#fabulator_context ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 72

def fabulator_context
  if @roots.nil?
    @roots = { }
  end

  if @roots['data'].nil?
    @roots['data'] = Fabulator::Expr::Node.new('data', @roots, nil, [])
    ctx = Fabulator::Expr::Context.new
    ctx.root = @roots['data']
    ctx.traverse_path(['resource'], true).first.value = self.resource_ln if self.resource_ln
    self.state_machine.init_context(ctx)
  end
  @roots['data']
end

#fabulator_context=(c) ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 87

def fabulator_context=(c)
  fc = self.fabulator_context
  @roots = { } if @roots.nil?
  @roots['data'] = c
end

#find_by_url(url, live = true, clean = false) ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 23

def find_by_url(url, live = true, clean = false)
  p = super
  return p if !p.nil? && !p.is_a?(FileNotFoundPage)

  url = clean_url(url) if clean
  if url =~ %r{^#{ self.url }([-_0-9a-zA-Z]+)/?$}
    self.resource_ln = $1
    return self
  else
    return p
  end
end

#headers ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 93

def headers
  if @resetting_context
    {
      :location => self.url,
    }
  elsif @redirecting
    {
      :location => @redirecting,
    }
  else
    { }
  end
end

#missing_args ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 172

def missing_args
  @sm_missing_args
end

#render_snippet(p) ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 111

def render_snippet(p)
  if p.name != XML_PART_NAME
    FabulatorFilter.set_page(self)
    r = super
    FabulatorFilter.reset_page
    r
  else
    FabulatorLibrary.all.each do |library|
      if library.compiled_xml.is_a?(Fabulator::Lib::Lib)
        library.compiled_xml.register_library
      end
    end

    sm = self.state_machine
    return '' if sm.nil?

    # run state machine if POST
    context = FabulatorContext.find_by_page(self)
    @resetting_context = false

    if request.method == :get && 
       params[:reset_context]
      if !context.new_record?
        context.destroy
      end
      # redirect without the reset_context param?
      @response.redirect(url,302)
      @resetting_context = true
      return
    end

    begin
      sm.context = YAML::load(context.context)
      if sm.context.empty?
        sm.init_context(self.fabulator_context)
      end
      #sm.context.merge!(self.resource_ln, ['resource'] ) if self.resource_ln
      if request.method == :post
        sm.run(params)
        # save context
        @sm_missing_args = sm.missing_params
        @sm_errors       = sm.errors
        context.context = YAML::dump(sm.context)
        context.save
      end
      # save statemachine state
      # display resulting view
    rescue Fabulator::FabulatorRequireAuth => e
      @redirecting = e.to_s
    rescue => e
      return "<p>#{e.to_s}</p><pre>" + e.backtrace.join("\n") + "</pre>"
    end
    return '' if @redirecting
    if sm.state != XML_PART_NAME
      return self.render_part(sm.state)
    else
      return 'Error: Fabulator application is not in a displayable state.'
    end
  end
end

#response_code ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 107

def response_code
  @resetting_context ? 302 : ( @redirecting ? 304 : 200 )
end

#state_machine ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 44

def state_machine
  return @state_machine unless @state_machine.nil?

  begin
    FabulatorLibrary.all.each do |library|
      if library.compiled_xml.is_a?(Fabulator::Lib::Lib)
        library.compiled_xml.register_library
      end
    end

    compiler = Fabulator::Compiler.new
    part = self.part(XML_PART_NAME)
    @state_machine = compiler.compile(part.content)
  rescue => e
    Rails.logger.info("Compiling the XML application resulted in the following error: #{e}")
    self.errors.add(:content, "Compiling the XML application resulted in the following error: #{e}")
  end

  return @state_machine

  if self.compiled_xml.nil? || self.compiled_xml == ''
    self.c_state_machine = nil
  else
    self.c_state_machine = (YAML::load(self.compiled_xml) rescue nil) unless self.c_state_machine
  end
  self.c_state_machine
end

#url ⇒ Object 



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# File 'app/models/fabulator_page.rb', line 36

def url
  u = super
  if !self.resource_ln.nil?
    u = u + '/' + self.resource_ln
  end
  u
end