Class: Wrapt::Layout

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/wrapt/layout.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(wrapt, env) ⇒ Layout

Returns a new instance of Layout.



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# File 'lib/wrapt/layout.rb', line 7

def initialize(wrapt, env)
  @env = env
  @wrapt = wrapt
  @request = Rack::Request.new(@env)
  @content_for = Hashie::Mash.new
  @ignore_layout = nil
end

Instance Attribute Details

#env ⇒ Object

Returns the value of attribute env.



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# File 'lib/wrapt/layout.rb', line 4

def env
  @env
end

#format ⇒ Object

Gets the format that this layouter has been set to. Defaults to the default_format of the wrapt instance

May be set with Wrapt::Layout#format=

See Also:



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# File 'lib/wrapt/layout.rb', line 37

def format
  @format
end

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/wrapt/layout.rb', line 5

def request
  @request
end

#template_name ⇒ Object

Gets the template name that this layouter has. Defaults to the wrapts instances default_template

May be set with Wrapt::Layout#default_template=

See Also:



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# File 'lib/wrapt/layout.rb', line 53

def template_name
  @template_name
end

#wrapt ⇒ Object

Returns the value of attribute wrapt.



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# File 'lib/wrapt/layout.rb', line 4

def wrapt
  @wrapt
end

Instance Method Details

#content=(content) ⇒ Object

Set the main content for the layout



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# File 'lib/wrapt/layout.rb', line 120

def content=(content)
  set_content_for(:content, content)
end

#content_for ⇒ Object

Provides access to the content_for hash. Content may be accessed for concatination etc

When using content_for you can provide different contents for you layouts. The default content label is :content

Examples:

# In your application
layout = env['layout']
layout.set_content_for(:foo, "Foo Content")
layout.content = "Normal Content"

# In the layout
<%= yield %>          <-- inserts the content labeled :content
<%= yield :content %> <-- insert the content labeled :content
<%= yield :foo %>     <-- insert the content labled :foo


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# File 'lib/wrapt/layout.rb', line 114

def content_for
  @content_for
end

#dup ⇒ Object 



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# File 'lib/wrapt/layout.rb', line 75

def dup
  dupped = super
  dupped.instance_variable_set('@content_for', Hashie::Mash.new)
  dupped
end

#each {|result| ... } ⇒ Object

The interface for rack.

Yields:

  • (result) 


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# File 'lib/wrapt/layout.rb', line 132

def each
  ignore = if @ignore_layout
    @ignore_layout.call(env)
  else
    @wrapt.ignore_layout?(env)
  end

  result = render_layout(ignore)
  yield result
  result
end

#ignore_layout(&block) ⇒ Object

allows you to set the ignore_layout block for just this request (and anythin downstream)



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# File 'lib/wrapt/layout.rb', line 43

def ignore_layout(&block)
  @ignore_layout = block
end

#master? ⇒ Boolean

Is the wrapt instance that created this layouter set as a master?

Returns:

  • (Boolean)

See Also:



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# File 'lib/wrapt/layout.rb', line 18

def master?
  @wrapt.master?
end

#render_layout(ignore_layout = false) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/wrapt/layout.rb', line 145

def render_layout(ignore_layout = false)
  return content_for[:content] if ignore_layout

  opts = {}
  opts[:format]   ||= format
  template = template_name

  template = @wrapt.template(template, opts)

  output = if template
    template.render(LayoutContext.new(env)) do |*args|
      label = args.first || :content
      content_for[label]
    end
  else
    content_for[:content]
  end
  output
end

#set_content_for(label = :content, content = nil) ⇒ Object

Set the content for the layout for the given label

Parameters:

  • label (Symbol) (defaults to: :content) —

    The label to identify the content to insert

  • content (String) (defaults to: nil) —

    The content to set for this label

See Also:



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# File 'lib/wrapt/layout.rb', line 88

def set_content_for(label = :content, content = nil)
  if block_given?
    content = block.call
  end

  content_for[label] = content
end

#template_name?(name, opts = {}) ⇒ Boolean

Check to see if there is a template of a given name and options for this layouter.

Returns:

  • (Boolean)

See Also:



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# File 'lib/wrapt/layout.rb', line 27

def template_name?(name, opts = {})
  !!@wrapt.template(name, opts)
end

#to_s ⇒ Object

An easy method to get the wrapped results



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# File 'lib/wrapt/layout.rb', line 126

def to_s
  map.join
end

#wrap(content, opts = {}) ⇒ Object

Wraps the given content into the layout using the same base as the layouter currently has

Parameters:

  • opts (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (opts):

  • :layout (String|Symbol) —

    the name of a layout template to use

  • :format (String|Symbol) —

    the format of the layout template to use



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# File 'lib/wrapt/layout.rb', line 65

def wrap(content, opts={})
  layout = self.dup

  layout.format         = opts[:format] if opts[:format]
  layout.template_name  = opts[:layout] if opts[:layout]

  layout.content = content
  layout.render_layout(false)
end