89 lines
No EOL
2.5 KiB
Ruby
89 lines
No EOL
2.5 KiB
Ruby
module CouchRest
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class Design < Document
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def view_by *keys
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opts = keys.pop if keys.last.is_a?(Hash)
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opts ||= {}
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self['views'] ||= {}
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method_name = "by_#{keys.join('_and_')}"
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if opts[:map]
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view = {}
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view['map'] = opts.delete(:map)
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if opts[:reduce]
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view['reduce'] = opts.delete(:reduce)
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opts[:reduce] = false
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end
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self['views'][method_name] = view
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else
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doc_keys = keys.collect{|k|"doc['#{k}']"} # this is where :require => 'doc.x == true' would show up
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key_emit = doc_keys.length == 1 ? "#{doc_keys.first}" : "[#{doc_keys.join(', ')}]"
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guards = opts.delete(:guards) || []
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guards.concat doc_keys
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map_function = <<-JAVASCRIPT
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function(doc) {
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if (#{guards.join(' && ')}) {
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emit(#{key_emit}, null);
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}
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}
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JAVASCRIPT
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self['views'][method_name] = {
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'map' => map_function
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}
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end
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self['views'][method_name]['couchrest-defaults'] = opts unless opts.empty?
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method_name
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end
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# Dispatches to any named view.
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def view view_name, query={}, &block
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view_name = view_name.to_s
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view_slug = "#{name}/#{view_name}"
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defaults = (self['views'][view_name] && self['views'][view_name]["couchrest-defaults"]) || {}
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fetch_view(view_slug, defaults.merge(query), &block)
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end
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def name
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id.sub('_design/','') if id
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end
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def name= newname
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self['_id'] = "_design/#{newname}"
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end
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def save
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raise ArgumentError, "_design docs require a name" unless name && name.length > 0
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super
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end
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private
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# returns stored defaults if the there is a view named this in the design doc
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def has_view?(view)
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view = view.to_s
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self['views'][view] &&
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(self['views'][view]["couchrest-defaults"]||{})
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end
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# def fetch_view_with_docs name, opts, raw=false, &block
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# if raw
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# fetch_view name, opts, &block
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# else
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# begin
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# view = fetch_view name, opts.merge({:include_docs => true}), &block
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# view['rows'].collect{|r|new(r['doc'])} if view['rows']
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# rescue
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# # fallback for old versions of couchdb that don't
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# # have include_docs support
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# view = fetch_view name, opts, &block
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# view['rows'].collect{|r|new(database.get(r['id']))} if view['rows']
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# end
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# end
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# end
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def fetch_view view_name, opts, &block
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database.view(view_name, opts, &block)
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end
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end
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end |