Class: Expo
- Inherits:
-
Object
- Object
- Expo
- Defined in:
- lib/expo.rb
Defined Under Namespace
Classes: Proxy
Constant Summary collapse
- CALL_ORDER =
[:aside, :expose, :sub_expo, :collection]
- TRIVIAL_PRESENTER =
Class.new do def present(object) object end end.new
Instance Method Summary collapse
- #aside(*messages) ⇒ Object
- #collection(key, collection, item_expo) ⇒ Object
- #expo(object, context = {}) ⇒ Object
- #expo_collection(objects, context = {}) ⇒ Object
- #expose(*messages) ⇒ Object
-
#initialize(presenter = nil, &block) ⇒ Expo
constructor
A new instance of Expo.
- #reset ⇒ Object
- #sub_expo(key, object, sub_expo_passed) ⇒ Object
Constructor Details
#initialize(presenter = nil, &block) ⇒ Expo
Returns a new instance of Expo.
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# File 'lib/expo.rb', line 12 def initialize(presenter=nil, &block) @presenter = presenter @block = block @message_map = {} @subs = {} @collections = {} @inner_calls = [] @id = self.object_id end |
Instance Method Details
#aside(*messages) ⇒ Object
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# File 'lib/expo.rb', line 67 def aside(*) array, hash = parse_arguments() @context.merge!(hasherize(array) {|msg| @preso.send(msg) }) hash.each do |k,v| @context[v] = @preso.send(k) end nil end |
#collection(key, collection, item_expo) ⇒ Object
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# File 'lib/expo.rb', line 91 def collection(key, collection, item_expo) @inner_calls << { method: :collection_inner, args: [key, collection, item_expo], block: nil } nil end |
#expo(object, context = {}) ⇒ Object
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# File 'lib/expo.rb', line 35 def expo(object, context={}) @object = object @context = context if object.nil? return nil end @preso = Proxy.new( object, (@presenter || TRIVIAL_PRESENTER).present(object) ) if !@block return {} end block_return = self.instance_exec @object, context, &@block @inner_calls.each do |call| self.send(call[:method], *call[:args], &call[:block]) end exposition = {} @message_map.each do |k,v| exposition[v] = @preso.send(k) end exposition.merge!(@subs) exposition.merge!(@collections) self.reset if block_return exposition.merge(block_return) else exposition end end |
#expo_collection(objects, context = {}) ⇒ Object
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# File 'lib/expo.rb', line 22 def expo_collection(objects, context={}) objects.map.with_index do |object, index| Expo.new(@presenter, &@block).expo(object, context.merge({index: index})) end end |
#expose(*messages) ⇒ Object
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# File 'lib/expo.rb', line 76 def expose(*) array, hash = parse_arguments() @message_map.merge!(hasherize(array).merge(hash)) nil end |
#reset ⇒ Object
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# File 'lib/expo.rb', line 28 def reset @message_map = {} @subs = {} @collections = {} @inner_calls = [] end |
#sub_expo(key, object, sub_expo_passed) ⇒ Object
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# File 'lib/expo.rb', line 82 def sub_expo(key, object, sub_expo_passed) @inner_calls << { method: :sub_expo_inner, args: [key, object, sub_expo_passed], block: nil } nil end |