Class: Maestrano::API::Object

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/maestrano/api/object.rb

Direct Known Subclasses

ListObject, Resource

Constant Summary collapse

@@permanent_attributes = 
Set.new([:api_token, :id])

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id = nil, api_token = nil) ⇒ Object

Returns a new instance of Object.



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# File 'lib/maestrano/api/object.rb', line 14

def initialize(id=nil, api_token=nil)
  # parameter overloading!
  if id.kind_of?(Hash)
    @retrieve_options = id.dup
    @retrieve_options.delete(:id)
    id = id[:id]
  else
    @retrieve_options = {}
  end

  @api_token = api_token
  @values = {}
  # This really belongs in API::Resource, but not putting it there allows us
  # to have a unified inspect method
  @unsaved_values = Set.new
  @transient_values = Set.new
  @values[:id] = id if id
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object (protected) 



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# File 'lib/maestrano/api/object.rb', line 156

def method_missing(name, *args)
  # TODO: only allow setting in updateable classes.
  if name.to_s.end_with?('=')
    attr = name.to_s[0...-1].to_sym
    add_accessors([attr])
    begin
      mth = method(name)
    rescue NameError
      raise NoMethodError.new("Cannot set #{attr} on this object. HINT: you can't set: #{@@permanent_attributes.to_a.join(', ')}")
    end
    return mth.call(args[0])
  else
    return @values[name] if @values.has_key?(name)
  end

  begin
    super
  rescue NoMethodError => e
    if @transient_values.include?(name)
      raise NoMethodError.new(e.message + ".  HINT: The '#{name}' attribute was set in the past, however.  It was then wiped when refreshing the object with the result returned by Maestrano's API, probably as a result of a save().  The attributes currently available on this object are: #{@values.keys.join(', ')}")
    else
      raise
    end
  end
end

Instance Attribute Details

#api_token ⇒ Object

Returns the value of attribute api_token.



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# File 'lib/maestrano/api/object.rb', line 6

def api_token
  @api_token
end

Class Method Details

._load(args) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 108

def self._load(args)
  values, api_token = Marshal.load(args)
  construct_from(values, api_token)
end

.construct_from(values, api_token = nil) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 33

def self.construct_from(values, api_token=nil)
  obj = self.new(values[:id], api_token)
  obj.refresh_from(values, api_token)
  obj
end

Instance Method Details

#[](k) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 72

def [](k)
  @values[k.to_sym]
end

#[]=(k, v) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 76

def []=(k, v)
  send(:"#{k}=", v)
end

#_dump(level) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 104

def _dump(level)
  Marshal.dump([@values, @api_token])
end

#as_json(*a) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 92

def as_json(*a)
  @values.as_json(*a)
end

#each(&blk) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 100

def each(&blk)
  @values.each(&blk)
end

#inspect ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 43

def inspect()
  id_string = (self.respond_to?(:id) && !self.id.nil?) ? " id=#{self.id}" : ""
  "#<#{self.class}:0x#{self.object_id.to_s(16)}#{id_string}> JSON: " + JSON.pretty_generate(@values)
end

#keys ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 80

def keys
  @values.keys
end

#refresh_from(values, api_token, partial = false) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 48

def refresh_from(values, api_token, partial=false)
  @api_token = api_token

  @previous_metadata = values[:metadata]
  removed = partial ? Set.new : Set.new(@values.keys - values.keys)
  added = Set.new(values.keys - @values.keys)
  # Wipe old state before setting new.

  instance_eval do
    remove_accessors(removed)
    add_accessors(added)
  end
  removed.each do |k|
    @values.delete(k)
    @transient_values.add(k)
    @unsaved_values.delete(k)
  end
  values.each do |k, v|
    @values[k] = Util.convert_to_maestrano_object(v, api_token)
    @transient_values.delete(k)
    @unsaved_values.delete(k)
  end
end

#respond_to?(symbol) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/maestrano/api/object.rb', line 114

def respond_to?(symbol)
  @values.has_key?(symbol) || super
end

#to_hash ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 96

def to_hash
  @values
end

#to_json(*a) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 88

def to_json(*a)
  JSON.generate(@values)
end

#to_s(*args) ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 39

def to_s(*args)
  JSON.pretty_generate(@values)
end

#values ⇒ Object 



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# File 'lib/maestrano/api/object.rb', line 84

def values
  @values.values
end