86 lines
2.6 KiB
Ruby
86 lines
2.6 KiB
Ruby
module RablFastJson
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class CompiledTemplate
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attr_accessor :source, :data, :root_name, :context
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delegate :[], :[]=, :merge!, :to => :source
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def initialize
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@source = {}
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end
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def has_root_name?
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!@root_name.nil?
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end
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def render
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get_object_from_context
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get_assigns_from_context
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@object.respond_to?(:each) ? render_collection : render_resource
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end
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def render_resource(data = nil, source = nil)
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data ||= @object
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source ||= @source
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source.inject({}) { |output, current|
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key, value = current
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out = case value
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when Symbol
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data.send(value) # attributes
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when Proc
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instance_exec data, &value # node
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when Array # node with condition
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next output if !instance_exec data, &(value.first) #value.first.call(data)
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instance_exec data, &(value.last)
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when Hash
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current_value = value.dup
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data_symbol = current_value.delete(:_data)
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object = data_symbol.nil? ? data : data_symbol.to_s.start_with?('@') ? @context.instance_variable_get(data_symbol) : data.send(data_symbol)
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if key.to_s.start_with?('_') # glue
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current_value.each_pair { |k, v|
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output[k] = object.send(v)
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}
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next output
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else # child
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object.respond_to?(:each) ? render_collection(object, current_value) : render_resource(object, current_value)
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end
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end
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output[key] = out
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output
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}
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end
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def render_collection(collection = nil, source = nil)
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collection ||= @object
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collection.inject([]) { |output, o| output << render_resource(o, source) }
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end
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def method_missing(name, *args, &block)
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@context.respond_to?(name) ? @context.send(name, *args, &block) : super
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end
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def partial(template_path, options = {})
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raise "No object was given to partial" if options[:object].nil?
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object = options[:object]
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return [] if object.respond_to?(:empty?) && object.empty?
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template = Library.instance.get(template_path)
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object.respond_to?(:each) ? template.render_collection(object) : template.render_resource(object)
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end
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protected
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def get_object_from_context
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@object = @context.instance_variable_get(@data) if @data
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end
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def get_assigns_from_context
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@context.instance_variable_get(:@_assigns).each_pair { |k, v|
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instance_variable_set("@#{k}", v) unless k.start_with?('_') || k == @data
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}
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end
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end
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end |