Contents

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= ValidatesOverlap

This project rocks and uses MIT-LICENSE.

=== This gem is available only for Rails 3.

=== When this gem should be helpful for you?
If you are developing Rails 3 app, let say some meeting planner and you can't save records which have time overlap.

=== Using

Add to your gemfile
```ruby
gem 'validates_overlap'
```

In your model

without scope
```ruby
validates :starts_at, :ends_at, :overlap => true
```

with scope
```ruby
validates :starts_at, :ends_at, :overlap => {:scope => "user_id"}
```

exclude edges
```ruby
validates :starts_at, :ends_at, :overlap => {:exclude_edges => "starts_at"}
validates :starts_at, :ends_at, :overlap => {:exclude_edges => ["starts_at", "ends_at"]}
```

with complicated relation relations

Exaple describes valildatation of user, positions and time slots.
User can't be assigned 2 times on position which is under time slot with time overlap.

```ruby
class Position < ActiveRecord::Base
  belongs_to :time_slot
  belongs_to :user
  validates "time_slots.starts_at", "time_slots.ends_at",
    :overlap => {
      :query_options => {:includes => :time_slot},
      :scope => { "positions.user_id" => proc{|position| position.user_id} }
    }
end

```

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
validates_overlap-0.1.1	README.rdoc