Class: Socialcastr::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/socialcastr/base.rb

Direct Known Subclasses

Comment, Like, Message, User

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(arguments = {}, prefix_options = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/socialcastr/base.rb', line 6

def initialize(arguments={}, prefix_options={})
  @data = {}
  arguments.each_pair do |k,v|
    @data[k.to_s] = v
  end
  @prefix_options = prefix_options
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 87

def method_missing(method, *args, &block)
  if method.to_s =~ /=$/
    @data[method_name(method.to_s.sub(/=$/,''))] = args.first
  else
    obj = @data[method_name(method)] 
    return nil unless obj
    unless new?
      self.class.set_prefix_options(obj, to_prefix_options)
    end
    return obj
  end
end

Instance Attribute Details

#prefix_options ⇒ Object

Returns the value of attribute prefix_options.



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# File 'lib/socialcastr/base.rb', line 5

def prefix_options
  @prefix_options
end

Class Method Details

.all(*arguments) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 151

def all(*arguments)
  find(:all, *arguments)
end

.api ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 123

def api
  Socialcastr.api
end

.collection_name ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 190

def collection_name
  model_name.downcase + "s"
end

.collection_path(options = {}) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 167

def collection_path(options = {})
  "#{prefix(options)}#{collection_name}"
end

.element_path(id, prefix_options = {}) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 163

def element_path(id, prefix_options = {})
  "#{collection_path(prefix_options)}/#{URI.escape id.to_s}"
end

.find(*arguments) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 127

def find(*arguments)
  args = arguments.dup
  scope = args.slice!(0)
  options = args.slice!(0) || {}
  case scope
    when :all   then find_every(options)
    when :first then find_every(options).first
    when :last  then find_every(options).to_a.last
    else             find_single(scope, options)
  end
end

.find_every(options) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 145

def find_every(options)
  (prefix_options, query_options) = parse_options(options)
  path = collection_path(prefix_options)
  parse(api.get(path, query_options), prefix_options)
end

.find_single(id, options) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 139

def find_single(id, options)
  (prefix_options, query_options) = parse_options(options)
  path = element_path(id, prefix_options)
  parse(api.get(path, query_options), prefix_options)
end

.first(*arguments) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 155

def first(*arguments)
  find(:first, *arguments)
end

.from_hash(h) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 119

def from_hash(h)
  new.tap { |object| object.instance_variable_set("@data", h) }
end

.last(*arguments) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 159

def last(*arguments)
  find(:last, *arguments)
end

.model_name ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 186

def model_name
  self.to_s.gsub(/^.*::/, '')
end

.parse(xml = "", prefix_options = {}) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 101

def parse(xml="", prefix_options={})
  resource = SAX::ActiveResource.new
  Nokogiri::XML::SAX::Parser.new(resource).parse(xml)
  return set_prefix_options(resource.data, prefix_options)
end

.parse_options(options) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 175

def parse_options(options)
  prefix_options = {}
  options.each_pair do |k,v|
    if k.to_s.match(/_id$/)
      prefix_options[k] = v
      options.delete(k)
    end
  end
  return [prefix_options, options]
end

.prefix(options) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 171

def prefix(options)
  options.map { |k,v| k.to_s.gsub("_id", 's') + "/" + v.to_s }.join("/") + "/"
end

.set_prefix_options(obj, prefix_options = {}) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 107

def set_prefix_options(obj, prefix_options={})
  if obj.class.ancestors.include? Socialcastr::Base
    obj.prefix_options = prefix_options
    return obj
  end
  if obj.class == Array
    obj.each do |o|
      set_prefix_options(o, prefix_options)
    end
  end
end

Instance Method Details

#api ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 51

def api
  @api ||= self.class.api
end

#collection_path ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 59

def collection_path
  self.class.collection_path(@prefix_options)
end

#copy_attributes_from_object(object = nil) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 42

def copy_attributes_from_object(object=nil)
  @data = object.instance_variable_get("@data")
  return self
end

#create ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 18

def create
  api.post(collection_path, to_params).tap do |xml|
    copy_attributes_from_object(self.class.parse(xml))
  end
end

#destroy ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 37

def destroy
  api.delete(element_path)
  return self
end

#element_path ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 55

def element_path
  self.class.element_path(self.id, @prefix_options)
end

#id ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 83

def id
  return @data["id"]
end

#method_name(s) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 79

def method_name(s)
  s.to_s.gsub("_","-")
end

#new? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/socialcastr/base.rb', line 47

def new?
  id.nil?
end

#param_name(variable_name) ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 75

def param_name(variable_name)
  "#{self.class.model_name.downcase}[#{variable_name}]"
end

#refresh ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 30

def refresh
  api.get(element_path).tap do |xml|
    copy_attributes_from_object(self.class.parse(xml))
  end
  return self
end

#save ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 14

def save
  new? ? create : update
end

#to_params ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 63

def to_params
  params = {}
  @data.each_pair do |k,v| 
    params[param_name(k)] = v
  end
  params
end

#to_prefix_options ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 71

def to_prefix_options
  @prefix_options.merge "#{self.class.model_name.downcase}_id" => id
end

#update ⇒ Object 



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# File 'lib/socialcastr/base.rb', line 24

def update
  api.put(element_path, to_params).tap do |xml|
    copy_attributes_from_object(self.class.parse(xml))
  end
end