121 lines
3.3 KiB
Ruby
121 lines
3.3 KiB
Ruby
require 'digest/md5'
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module CouchRest
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module Mixins
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module DesignDoc
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def self.included(base)
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base.extend(ClassMethods)
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end
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module ClassMethods
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def design_doc
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@design_doc ||= Design.new(default_design_doc)
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end
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# Use when something has been changed, like a view, so that on the next request
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# the design docs will be updated (if changed!)
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def req_design_doc_refresh
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@design_doc_fresh = { }
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end
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def design_doc_id
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"_design/#{design_doc_slug}"
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end
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def design_doc_slug
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self.to_s
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end
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def default_design_doc
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{
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"_id" => design_doc_id,
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"language" => "javascript",
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"views" => {
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'all' => {
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'map' => "function(doc) {
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if (doc['couchrest-type'] == '#{self.to_s}') {
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emit(doc['_id'],1);
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}
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}"
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}
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}
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}
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end
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# DEPRECATED
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# use stored_design_doc to retrieve the current design doc
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def all_design_doc_versions(db = database)
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db.documents :startkey => "_design/#{self.to_s}",
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:endkey => "_design/#{self.to_s}-\u9999"
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end
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# Retreive the latest version of the design document directly
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# from the database.
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def stored_design_doc(db = database)
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db.get(design_doc_id) rescue nil
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end
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alias :model_design_doc :stored_design_doc
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def refresh_design_doc(db = database)
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raise "Database missing for design document refresh" if db.nil?
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unless design_doc_fresh(db)
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save_design_doc(db)
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design_doc_fresh(db, true)
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end
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end
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# Save the design doc onto a target database in a thread-safe way,
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# not modifying the model's design_doc
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#
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# See also save_design_doc! to always save the design doc even if there
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# are no changes.
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def save_design_doc(db = database, force = false)
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update_design_doc(Design.new(design_doc), db, force)
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end
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# Force the update of the model's design_doc even if it hasn't changed.
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def save_design_doc!(db = database)
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save_design_doc(db, true)
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end
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protected
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def design_doc_fresh(db, fresh = nil)
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@design_doc_fresh ||= {}
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if fresh.nil?
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@design_doc_fresh[db.uri] || false
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else
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@design_doc_fresh[db.uri] = fresh
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end
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end
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# Writes out a design_doc to a given database, returning the
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# updated design doc
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def update_design_doc(design_doc, db, force = false)
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saved = stored_design_doc(db)
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if saved
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changes = force
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design_doc['views'].each do |name, view|
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if saved['views'][name] != view
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changes = true
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saved['views'][name] = view
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end
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end
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if changes
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db.save_doc(saved)
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end
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design_doc
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else
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design_doc.database = db
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design_doc.save
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design_doc
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end
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end
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end # module ClassMethods
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end
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end
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end
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