https://github.com/cmeiklejohn/histomatic

Quick 'n dirty histograms for ActiveRecord.
https://github.com/cmeiklejohn/histomatic

Last synced: about 2 months ago
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Quick 'n dirty histograms for ActiveRecord.

• Host: GitHub
• URL: https://github.com/cmeiklejohn/histomatic
• Owner: cmeiklejohn
• License: mit
• Created: 2012-02-16T22:28:26.000Z (almost 13 years ago)
• Default Branch: master
• Last Pushed: 2012-02-20T02:20:59.000Z (almost 13 years ago)
• Last Synced: 2024-10-26T08:59:02.848Z (2 months ago)
• Language: Ruby
• Homepage: http://github.com/cmeiklejohn/histomatic
• Size: 96.7 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.markdown
  • License: LICENSE

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README

        
# Histomatic

Quick n' dirty histograms for Rails.

## Notice

Currently in development, and only supports the mysql2 driver.

## Usage

Generate a histogram providing an input source, which is either an

ActiveRecord class or instance of ActiveRelation, a column as a string,

and groupings.  

Currently the column must return a numeric.

### Examples

Provide a class:

```ruby

Histomatic.generate(

  Purchase, 

  'amount', 

  [0, 10, 20]

).to_hash # { 0 => 2, 10 => 0, 20 => 0 }

```

Provide an ActiveRelation:

```ruby

Histomatic.generate(

  Purchase.where(:name => 'Chris'), 

  'amount', 

  [0, 10, 20]

).to_hash # { 0 => 1, 10 => 0, 20 => 0 }

```

Provide a transformation as the column:

```ruby

Histomatic.generate(

  Purchase.where(:name => 'Chris'), 

  'datediff(current_date, purchases.created_at)', 

  [0, 10, 20]

).to_hash # { 0 => 0, 10 => 1, 20 => 0 }

```

## License

Histomatic is Copyright © 2012 Christopher Meiklejohn.  Histomatic is

free software, and may be redistributed under the terms specified in the

LICENSE file.