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This package brings tagging to DataMapper. It is inspired by Acts As Taggable On by Michael Bleigh, github's mbleigh. Props to him for the contextual tagging based on Acts As Taggable on Steroids.

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README.rdoc

dm-tags

github.com/datamapper/dm-more/tree/master

Description

This package brings tagging to DataMapper. It is inspired by Acts As Taggable On by Michael Bleigh, github's mbleigh. Props to him for the contextual tagging based on Acts As Taggable on Steroids.

Features and Problems

Features

  • Contextual tagging using Model.has_tags_on (see below for usage)

  • Traditional 'tags-only' tagging using Model.has_tags

Problems

  • None known yet, but this is very alpha software. Sorry if it misbehaves. Please send me a github message if you find a bug.

Synopsis

require 'rubygems'
require 'dm-core'
require 'dm-tags'

DataMapper.setup(:default, "sqlite3::memory:")

class MyModel
  include DataMapper::Resource
  property :id, Serial
  has_tags_on :tags, :skills
end

DataMapper.auto_migrate!

# Contextual tagging
MyModel.taggable? #=> true
MyModel.new.taggable? #=> true

model = MyModel.new
model.tag_list = 'test, me out,   please   '
model.tag_list #=> ['me out', 'please', 'test'] # Sanitized and alphabetized
model.save #=> true
model.tags
#=> [#<Tag id=1 name="me out">, #<Tag id=2 name="please">, #<Tag id=3 name="test">]
model.tag_list = 'test, again'
model.save #=> true
model.tags
#=> [#<Tag id=3 name="test">, #<Tag id=4 name="again">] # Checks for existing tags
Tag.all
#=> [#<Tag id=1 name="me out">, #<Tag id=2 name="please">, #<Tag id=3 name="test">, #<Tag id=4 name="again">]

another = MyModel.new
another.skill_list = 'test, all, you, like'
another.save #=> true
another.tag_list #=> []
another.skills
#=> [#<Tag id=5 name="all">, #<Tag id=6 name="like">,  #<Tag id=3 name="test">, #<Tag id=7 name="you">]

MyModel.tagged_with('test') #=> [#<MyModel id=1>, #<MyModel id=2>]
MyModel.tagged_with('test', :on => 'tags') #=> [#<MyModel id=1>]
MyModel.tagged_with('test', :on => 'skills') #=> [#<MyModel id=2>]

# Deleting tags
model.tag_list = ''
model.save #=> true
model.tags
#=> []
another.skill_list = ''
another.save #=> true
another.skills
#= []

#Helper methods for text fields
model.tag_collection = "tag1, tag2, tag3"
model.save
model.tag_collection #=> "tag1, tag2, tag3"
model.tags
#=> [#<Tag id=1 name="tag1">, #<Tag id=2 name="tag2">, #<Tag id=3 name="tag3">]
model.tag_collection = ''
model.save
model.tag_collection = '' #=> ""

# Traditional 'tags only' tagging

class TagsOnly
  include DataMapper::Resource
  property :id, Serial
  has_tags
end

TagsOnly.auto_migrate!

TagsOnly.taggable? #=> true
TagsOnly.new.taggable? #=> true

tags_only = TagsOnly.new
tags_only.tag_list = 'tags, only'
tags_only.tag_list #=> ['only', 'tags']
tags_only.save #=> true
tags_only.tags #=> [#<Tag id=8 name="only">, #<Tag id=9 name="tags">]
tags_only.tag_list = ''
tags_only.save #= true
tags_only.tags #=> []

Requirements

  • DataMapper (dm-core)

Installation

git clone http://github.com/datamapper/dm-more/tree/master
cd dm-tags
rake install

License

(The MIT License)

Copyright © 2008 Bobby Calderwood

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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