Module: CouchRest::Commands::Push

Defined in:
lib/couchrest/commands/push.rb

Class Method Summary collapse

Class Method Details

.helpObject


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# File 'lib/couchrest/commands/push.rb', line 21

def self.help
  helpstring = <<-GEN

  == Pushing views with Couchview ==

  Usage: couchview push directory dbname

  Couchview expects a specific filesystem layout for your CouchDB views (see
  example below). It also supports advanced features like inlining of library
  code (so you can keep DRY) as well as avoiding unnecessary document
  modification.

  Couchview also solves a problem with CouchDB's view API, which only provides
  access to the final reduce side of any views which have both a map and a
  reduce function defined. The intermediate map results are often useful for
  development and production. CouchDB is smart enough to reuse map indexes for
  functions duplicated across views within the same design document.

  For views with a reduce function defined, Couchview creates both a reduce view
  and a map-only view, so that you can browse and query the map side as well as
  the reduction, with no performance penalty.

  == Example ==

  couchview push foo-project/bar-views baz-database

  This will push the views defined in foo-project/bar-views into a database
  called baz-database. Couchview expects the views to be defined in files with
  names like:

  foo-project/bar-views/my-design/viewname-map.js
  foo-project/bar-views/my-design/viewname-reduce.js
  foo-project/bar-views/my-design/noreduce-map.js

  Pushed to => http://127.0.0.1:5984/baz-database/_design/my-design

  And the design document:
  {
    "views" : {
      "viewname-map" : {
        "map" : "### contents of view-name-map.js ###"
      },
      "viewname-reduce" : {
        "map" : "### contents of view-name-map.js ###",
        "reduce" : "### contents of view-name-reduce.js ###"
      },
      "noreduce-map" : {
        "map" : "### contents of noreduce-map.js ###"
      }
    }
  }

  Couchview will create a design document for each subdirectory of the views
  directory specified on the command line.

  == Library Inlining ==

  Couchview can optionally inline library code into your views so you only have
  to maintain it in one place. It looks for any files named lib.* in your
  design-doc directory (for doc specific libs) and in the parent views directory
  (for project global libs). These libraries are only inserted into views which
  include the text

  // !include lib

  or

  # !include lib

  Couchview is a result of scratching my own itch. I'd be happy to make it more
  general, so please contact me at [email protected] if you'd like to see anything
  added or changed.

  GEN
  helpstring.gsub(/^        /, '')
end

.run(options) ⇒ Object


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# File 'lib/couchrest/commands/push.rb', line 7

def self.run(options)
  directory = options[:directory]
  database  = options[:trailing_args].first
  
  fm      = CouchRest::FileManager.new(database)
  fm.loud = options[:loud]

  if options[:loud]
    puts "Pushing views from directory #{directory} to database #{fm.db}"
  end

  fm.push_views(directory)
end