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app.rb
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app.rb
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require 'sinatra'
require 'sequel'
require 'sinatra/sequel'
require 'json'
# Models & migrations
migration 'create links' do
database.create_table :links do
primary_key :id
String :name, :unique => true, :null => false
String :url, :unique => false, :null => false
Integer :hits, :default => 0
DateTime :created_at
index :name
end
end
class Link < Sequel::Model
def hit!
self.hits += 1
self.save(:validate => false)
end
def validate
super
errors.add(:name, 'cannot be empty') if !name || name.empty?
errors.add(:url, 'cannot be empty') if !url || url.empty?
end
end
configure do
set :erb, :escape_html => true
end
# Actions
get '/' do
@links = Link.order(:hits.desc).all
erb :index
end
get '/links' do
redirect '/'
end
post '/links' do
begin
Link.create(
:name => params[:name],
:url => params[:url]
)
redirect '/'
rescue Sequel::ValidationFailed,
Sequel::DatabaseError => e
halt "Error: #{e.message}"
end
end
get '/links/suggest' do
query = params[:q]
results = Link.filter(:name.like("#{query}%")).or(:url.like("%#{query}%"))
results = results.all.map {|r| r.name }
content_type :json
[query, results].to_json
end
get '/links/search' do
query = params[:q]
link = Link[:name => query]
if link
redirect "/#{link.name}"
else
@links = Link.filter(:name.like("#{query}%"))
erb :index
end
end
get '/links/opensearch.xml' do
content_type :xml
erb :opensearch, :layout => false
end
get '/links/:id/remove' do
link = Link.find(:id => params[:id])
halt 404 unless link
link.destroy
redirect '/'
end
get '/:name/?*?' do
link = Link[:name => params[:name]]
halt 404 unless link
link.hit!
parts = (params[:splat].first || '').split('/')
url = link.url
url %= parts if parts.any?
redirect url
end
# Views
__END__
@@ layout
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body {
font: 13px 'Helvetica Neue',Helvetica,Arial Geneva,sans-serif;
}
a, a:link, a:visited, a:active {
color: #000;
text-decoration: none;
border-bottom: 1px solid #CCC;
}
a:hover {
text-decoration: underline;
}
article {
display: inline-block;
padding: 10px;
margin: 10px;
border: 5px solid #000;
}
ul {
margin: 0;
padding: 0;
}
li {
list-style: none;
margin-bottom: 5px;
}
li section {
display: inline-block;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
.name {
width: 100px;
}
.url {
width: 150px;
}
.actions {
width: 50px;
text-align: right;
}
.remove {
display: none;
}
.actions:hover .remove {
display: block;
}
.actions:hover .hits {
display: none;
}
hr {
background: 0;
border: 0;
border-bottom: 1px solid #CCC;
margin: 10px 0;
}
button {
height: 21px;
}
input {
width: 100px;
padding: 3px;
border: 1px solid #BBB;
border-top-color: #999;
box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.1);
border-radius: 3px;
}
input:focus {
border: 1px solid #5695DB;
outline: none;
-webkit-box-shadow: inset 0 1px 2px #DDD, 0px 0 5px #5695DB;
-moz-box-shadow: 0 0 5px #5695db;
box-shadow: inset 0 1px 2px #DDD, 0px 0 5px #5695DB;
}
</style>
<link rel="search" title="Go" href="/links/opensearch.xml" type="application/opensearchdescription+xml"/>
<title>go</title>
</head>
<body>
<article><%= yield %></article>
</body>
</html>
@@ index
<form method="post" action="/links">
<input type="text" name="name" placeholder="Name" required>
<input type="url" name="url" placeholder="URL" required>
<button>Create</button>
</form>
<hr />
<ul>
<% @links.each do |link| %>
<li>
<section class="name">
<a href="/<%= link.name %>"><%= link.name %></a>
</section>
<section class="url" title="<%= link.url %>"><%= link.url %></section>
<section class="actions">
<span class="hits">(<%= link.hits %>)</span>
<span class="remove">
<a href="/links/<%= link.id %>/remove" onclick="return confirm('Are you sure?');" title="remove">X</a>
</span>
</section>
</li>
<% end %>
</ul>
<% if @links.empty? %><p>No results</p><% end %>
@@ opensearch
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
<ShortName>Go</ShortName>
<Description>Search Go</Description>
<InputEncoding>UTF-8</InputEncoding>
<OutputEncoding>UTF-8</OutputEncoding>
<Url type="application/x-suggestions+json" method="GET" template="http://go/links/suggest">
<Param name="q" value="{searchTerms}"/>
</Url>
<Url type="text/html" method="GET" template="http://go/links/search">
<Param name="q" value="{searchTerms}"/>
</Url>
</OpenSearchDescription>