couchrest_model/lib/couchrest/mixins/design_doc.rb

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require 'digest/md5'
module CouchRest
module Mixins
module DesignDoc
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
def design_doc_id
"_design/#{design_doc_slug}"
end
def design_doc_slug
return design_doc_slug_cache if design_doc_slug_cache && design_doc_fresh
funcs = []
design_doc['views'].each do |name, view|
funcs << "#{name}/#{view['map']}#{view['reduce']}"
end
md5 = Digest::MD5.hexdigest(funcs.sort.join(''))
self.design_doc_slug_cache = "#{self.to_s}-#{md5}"
end
def default_design_doc
{
"language" => "javascript",
"views" => {
'all' => {
'map' => "function(doc) {
if (doc['couchrest-type'] == '#{self.to_s}') {
emit(null,null);
}
}"
}
}
}
end
def refresh_design_doc
did = design_doc_id
saved = database.get(did) rescue nil
if saved
design_doc['views'].each do |name, view|
saved['views'][name] = view
end
database.save_doc(saved)
self.design_doc = saved
else
design_doc['_id'] = did
design_doc.delete('_rev')
design_doc.database = database
design_doc.save
end
self.design_doc_fresh = true
end
end # module ClassMethods
end
end
end