83 lines
2.2 KiB
Ruby
83 lines
2.2 KiB
Ruby
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require 'middleman-core/core_extensions/collections/pagination'
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require 'middleman-core/core_extensions/collections/step_context'
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require 'middleman-core/core_extensions/collections/lazy_root'
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require 'middleman-core/core_extensions/collections/lazy_step'
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# Super "class-y" injection of array helpers
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class Array
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include Middleman::Pagination::ArrayHelpers
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end
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module Middleman
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module CoreExtensions
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module Collections
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class CollectionsExtension < Extension
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# This should run after most other sitemap manipulators so that it
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# gets a chance to modify any new resources that get added.
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self.resource_list_manipulator_priority = 110
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attr_accessor :root_collector, :leaves
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def initialize(app, options_hash={}, &block)
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super
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@leaves = Set.new
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@collectors_by_name = {}
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@values_by_name = {}
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@root_collector = LazyCollectorRoot.new(self)
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end
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Contract None => Any
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def before_configuration
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@leaves.clear
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app.add_to_config_context :resources, &method(:root_collector)
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app.add_to_config_context :collection, &method(:register_collector)
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end
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Contract Symbol, LazyCollectorStep => Any
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def register_collector(label, endpoint)
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@collectors_by_name[label] = endpoint
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end
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Contract Symbol => Any
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def collector_value(label)
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@values_by_name[label]
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end
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Contract ResourceList => ResourceList
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def manipulate_resource_list(resources)
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@root_collector.realize!(resources)
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ctx = StepContext.new
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leaves = @leaves.dup
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@collectors_by_name.each do |k, v|
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@values_by_name[k] = v.value(ctx)
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leaves.delete v
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end
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# Execute code paths
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leaves.each do |v|
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v.value(ctx)
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end
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# Inject descriptors
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resources + ctx.descriptors.map { |d| d.to_resource(app) }
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end
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helpers do
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def collection(label)
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extensions[:collections].collector_value(label)
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end
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def pagination
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current_resource.data.pagination
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end
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end
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end
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end
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end
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end
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