Class: Sinatra::Hat::Maker

Inherits:
Object show all
Includes:
Actions, Responses
Defined in:
lib/sinatras-hat/maker.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Actions

#create!, #destroy!, #edit!, #generate_actions!, #index!, #new!, #show!, #update!

Methods included from Responses

#serialized, #templated

Constructor Details

#initialize(model) ⇒ Maker

Returns a new instance of Maker.



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# File 'lib/sinatras-hat/maker.rb', line 9

def initialize(model)
  @model = model
  with(options)
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/sinatras-hat/maker.rb', line 5

def context
  @context
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/sinatras-hat/maker.rb', line 5

def model
  @model
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/sinatras-hat/maker.rb', line 5

def options
  @options
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/sinatras-hat/maker.rb', line 4

def parent
  @parent
end

Instance Method Details

#authenticator(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 79

def authenticator(&block)
  if block_given?
    @authenticator = block
  else
    @authenticator ||= proc { |username, password|
      credentials[:username] == username and credentials[:password] == password
    }
  end
end

#call(method, params) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 177

def call(method, params)
  proxy(params).instance_exec(params, &send(method))
end

#children(*args) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 70

def children(*args)
  result = get_or_set_option(:children, args) do
    self.children = args
    self.children.uniq!
  end
  
  [result].flatten
end

#create(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 105

def create(&block)
  if block_given?
    @create = block
  else
    @create ||= proc do |model, params|
      result = model.new
      result.attributes = params[model_name]
      result.save ? result : nil
    end
  end
end

#define(context, opts = {}, &block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 14

def define(context, opts={}, &block)
  @context = context
  @options.merge!(opts)
  instance_eval(&block) if block_given?
  generate_actions!
end

#destroy(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 128

def destroy(&block)
  if block_given?
    @destroy = block
  else
    @destroy ||= proc do |record, params|
      record.destroy
      :destroyed
    end
  end
end

#finder(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 89

def finder(&block)
  if block_given?
    @finder = block
  else
    @finder ||= proc { |params| all }
  end
end

#map(name, path, opts = {}, &block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 139

def map(name, path, opts={}, &block)
  opts[:verb] ||= :get
  klass = self
  actions[name] = Action.new(self, name, block)

  context.send(opts[:verb], resource_path(path)) do
    begin
      klass.templated(self, name, opts)
    rescue Errno::ENOENT => e
      klass.rescue_template_error(e)
    end
  end
  
  context.send(opts[:verb], "#{resource_path(path)}.:format") do
    begin
      klass.serialized(self, name, opts)
    rescue UnsupportedFormat => e
      klass.rescue_format_error(e)
    end
  end
end

#model_id ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 189

def model_id
  "#{model_name}_id".to_sym
end

#model_name ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 193

def model_name
  model.name.downcase
end

#mount(klass, opts = {}, &block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 21

def mount(klass, opts={}, &block)
  child = Maker.new(klass)
  child.parent = self
  child.define(context, opts, &block)
  child
end

#only(*args) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 56

def only(*args)
  result = get_or_set_option(:only, args) do
    self.only = args
    self.only.uniq!
  end
  
  result = Array(result)
  
  result.move_to_back(:index)
  result.move_to_front(:new, :edit)
  
  result
end

#parents ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 41

def parents
  @parents ||= parent ? Array(parent) + parent.parents : []
end

#protect(*args) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 45

def protect(*args)
  opts = args.extract_options!
  credentials.update(opts)
  actions = get_or_set_option(:protect, args) do
    self.protect += args
    self.protect.uniq!
  end
  
  [actions].flatten
end

#proxy(params = {}) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 181

def proxy(params={})
  return model if parent.nil?
  fake_params = params.dup
  fake_params.merge!("id" => params[parent.model_id])
  fake_params.make_indifferent!
  parent.call(:record, fake_params).try(prefix) || model
end

#record(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 97

def record(&block)
  if block_given?
    @record = block
  else
    @record ||= proc { |params| first(:id => params[:id]) }
  end
end

#rescue_format_error(e) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 161

def rescue_format_error(e)
  throw :halt, [
    406, [
      "The `#{e.format}` format is not supported.\n",
      "Valid Formats: #{accepts.keys.join(', ')}\n",
    ].join("\n")
  ]
end

#rescue_template_error(e) ⇒ Object

TODO Create a real template for this error.



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# File 'lib/sinatras-hat/maker.rb', line 171

def rescue_template_error(e)
  msg = "<pre>There was a problem with your view template:\n\n  "
  msg << e.message
  msg << "\n</pre>"
end

#resource_path(suffix) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 28

def resource_path(suffix)
  resources = parents + [self]
  path = resources.inject("") do |memo, maker|
    memo += eql?(maker) ?
      "/#{maker.prefix}" :
      "/#{maker.prefix}/:#{maker.model.name}_id"
  end
  (path + suffix).tap do |s|
    s.downcase!
    s.gsub!(%r(/$), '')
  end
end

#update(&block) ⇒ Object 



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# File 'lib/sinatras-hat/maker.rb', line 117

def update(&block)
  if block_given?
    @update = block
  else
    @update ||= proc do |record, params|
      record.attributes = params[model_name]
      record.save ? record : false
    end
  end
end