103 lines
3.3 KiB
Ruby
103 lines
3.3 KiB
Ruby
module CouchRest
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module Commands
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module Push
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def self.run(options)
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directory = options[:directory]
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database = options[:trailing_args].first
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fm = CouchRest::FileManager.new(database)
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fm.loud = options[:loud]
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if options[:loud]
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puts "Pushing views from directory #{directory} to database #{fm.db}"
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end
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fm.push_views(directory)
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end
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def self.help
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helpstring = <<-GEN
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== Pushing views with Couchview ==
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Usage: couchview push directory dbname
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Couchview expects a specific filesystem layout for your CouchDB views (see
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example below). It also supports advanced features like inlining of library
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code (so you can keep DRY) as well as avoiding unnecessary document
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modification.
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Couchview also solves a problem with CouchDB's view API, which only provides
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access to the final reduce side of any views which have both a map and a
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reduce function defined. The intermediate map results are often useful for
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development and production. CouchDB is smart enough to reuse map indexes for
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functions duplicated across views within the same design document.
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For views with a reduce function defined, Couchview creates both a reduce view
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and a map-only view, so that you can browse and query the map side as well as
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the reduction, with no performance penalty.
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== Example ==
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couchview push foo-project/bar-views baz-database
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This will push the views defined in foo-project/bar-views into a database
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called baz-database. Couchview expects the views to be defined in files with
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names like:
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foo-project/bar-views/my-design/viewname-map.js
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foo-project/bar-views/my-design/viewname-reduce.js
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foo-project/bar-views/my-design/noreduce-map.js
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Pushed to => http://localhost:5984/baz-database/_design/my-design
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And the design document:
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{
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"views" : {
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"viewname-map" : {
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"map" : "### contents of view-name-map.js ###"
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},
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"viewname-reduce" : {
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"map" : "### contents of view-name-map.js ###",
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"reduce" : "### contents of view-name-reduce.js ###"
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},
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"noreduce-map" : {
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"map" : "### contents of noreduce-map.js ###"
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}
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}
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}
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Couchview will create a design document for each subdirectory of the views
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directory specified on the command line.
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== Library Inlining ==
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Couchview can optionally inline library code into your views so you only have
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to maintain it in one place. It looks for any files named lib.* in your
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design-doc directory (for doc specific libs) and in the parent views directory
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(for project global libs). These libraries are only inserted into views which
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include the text
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//include-lib
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or
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#include-lib
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Couchview is a result of scratching my own itch. I'd be happy to make it more
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general, so please contact me at jchris@grabb.it if you'd like to see anything
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added or changed.
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GEN
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helpstring.gsub(/^ /, '')
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end
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end
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end
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end
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