Module: CouchRest::Commands::Push

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

Class Method Summary collapse

Class Method Details

.helpObject



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
# 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



7
8
9
10
11
12
13
14
15
16
17
18
19
# 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