# Crummy with Schema.org support

Crummy is a simple and tasty way to add breadcrumbs to your Rails applications.

## Install

Simply add the dependency to your Gemfile:

```ruby
gem "crummy-schema-dot-org", "~> 1.9.0"
```

# Example

In your controllers you may add\_crumb either like a before\_filter or
within a method (It is also available to views).

```ruby
class ApplicationController
  add_crumb "Home", '/'
end

class BusinessController < ApplicationController
  add_crumb("Businesses") { |instance| instance.send :businesses_path }
  add_crumb("Comments", only: "comments") { |instance| instance.send :businesses_comments_path }
  before_filter :load_comment, only: "show"
  add_crumb :comment, only: "show"

  # Example for nested routes:
  add_crumb(:document) { [:account, :document] }

  def show
    add_crumb @business.display_name, @business
  end

  def load_comment
    @comment = Comment.find(params[:id])
  end
end
```

Then in your view:

```erb
<%= render_crumbs %>
```

## Html options for breadcrumb link

You can set the html options with *link_html_options*.
These are added to the *a* tag.

```ruby
add_crumb "Home", '/', link_html_options: {title: "my link title"}
```

##You can set html instead text in first parameter.
If tag <code>a</code> present in this html, tag a not be a wrapper.

```ruby
add_crumb "<a class='glyphicons shield' href='/support'><i></i>Support</a>".html_safe, "", {}
```

## Options for render\_crumbs

`render_crumbs` renders the list of crumbs as either html or xml

The output format. Can either be :xml or :html or :html\_list. Defaults
to :html

```ruby
format: (:html|:html_list|:xml)
```

The separator text. It does not assume you want spaces on either side so
you must specify. Defaults to `&raquo;` for :html and
`<crumb>` for :xml

```ruby
separator: string
```

Render links in the output. Defaults to *true*

```ruby
links: false
```

Render
[Richsnipet](http:/support.google.com/webmasters/bin/answer.py?hl=en&answer=99170&topic=1088472&ctx=topic/)
Default to *false*

```ruby
microdata: true
```

Optionally disable linking of the last crumb, Defaults to *true*

```ruby
last_crumb_linked: false
```

With this option, output will be blank if there are no breadcrumbs.

```ruby
skip_if_blank: true
```

### Examples

```ruby
render_crumbs                     #=> <a href="/">Home</a> &raquo; <a href="/businesses">Businesses</a>
render_crumbs separator: ' | '    #=> <a href="/">Home</a> | <a href="/businesses">Businesses</a>
render_crumbs format: :xml        #=> <crumb href="/">Home</crumb><crumb href="/businesses">Businesses</crumb>
render_crumbs format: :html_list  #=> <ol class="" id=""><li class=""><a href="/">Home</a></li><li class=""><a href="/">Businesses</a></li></ol>
render_crumbs format: :html_list, :microdata => true
                                  #=> <ol class="" id=""><li class="" itemscope="itemscope" itemtype="http://data-vocabulary.org/Breadcrumb">
                                  #     <a href="/" itemprop="url"><span itemprop="title">Home</span></a></li></ol>
add_crumb support_link, {:right_side => true, :links => "/support", :li_right_class => "pull-right hidden-phone"}
                                  #=> <li class="pull-right hidden-phone">
                                  #=>  <span><a class="glyphicons shield" href="/support">
                                  #=>   <i></i>Support</a>
                                  #=>  </span>
                                  #=> </li>
                                  #=> <li class="divider pull-right hidden-phone"></li>
```

A crumb with a nil argument for the link will output an unlinked crumb.

With `format: :html_list` you can specify additional `params: :li_class, :ol_class, :ol_id`

### App-wide configuration

You have the option to pre-configure any of the Crummy options in an
application-wide configuration. The options above are available to
configure, with the exception of `:separator`, as well as many others.

The biggest difference is that `:separator` is not an option. Instead,
you have format-specific configuration options: `:html_separator`,
`:xml_separator`, and `:html_list_separator`. `:separator` can still be
overridden in the view.

Insert the following in a file named `config/initializers/crummy.rb`:

```ruby
Crummy.configure do |config|
  config.format = :xml
end
```

Possible parameters for configuration are:

```ruby
:format
:links
:skip_if_blank
:html_separator
:xml_separator
:html_list_separator
:html_list_right_separator
:first_class
:last_class
:ol_id
:ol_class
:li_class
:li_right_class
:microdata
:last_crumb_linked
:truncate
:right_side
```

See `lib/crummy.rb` for a list of these parameters and their defaults.

###Individually for each crumb configuration:
```ruby
add_crumb support_link, {:right_side => true, :links => "/support", : li_class => "my_class", :li_right_class => "pull-right hidden-phone"}
```
Simple add that parameter to options hash.


## Live example application

An example application is available right inside this gem. That application is documented, see `example/README` for details about usage.

## Todo

-   Accept collections of models as a single argument
-   Accept instances of models as a single argument
-   Allow for variables in names. (The workaround is to do your own
    before\_filter for that currently)
-   Make a crumbs? type method

## Credits

-   [Zach Inglis](http://zachinglis.com) of [Superhero Studios](http://superhero-studios.com)
-   [Andrew Nesbitt](http://github.com/andrew)
-   [Rein Henrichs](http://reinh.com)
-   [Les Hill](http://blog.leshill.org/)
-   [Sandro Turriate](http://turriate.com/)
-   [Przemysław
    Kowalczyk](http://szeryf.wordpress.com/2008/06/13/easy-and-flexible-breadcrumbs-for-rails/)
    - feature ideas
-   [Sharad Jain](http://github.com/sjain)
-   [Max Riveiro](http://github.com/kavu)
-   [Kamil K. Lemański](http://kml.jogger.pl)
-   [Brian Cobb](http://bcobb.net/)
-   [Kir Shatrov](http://github.com/shatrov) ([Evrone
    company](http://evrone.com))
-   [sugilog](http://github.com/sugilog)
-   [Trond Arve Nordheim](http://github.com/tanordheim)
-   [Jan Szumiec](http://github.com/jasiek)
-   [Jeff Browning](http://github.com/jbrowning)
-   [Bill Turner](http://github.com/billturner)

**Copyright 2008-2013 Zach Inglis, released under the MIT license**