machu/step_counter.rb

## step_counter.rb
require 'rubygems'
require 'sinatra'
require 'appengine-apis/datastore'

# Make sure our template can use <%=h
helpers do
  include Rack::Utils
  alias_method :h, :escape_html
end

template :layout do
  <<-EOS
  <html>
  <head><title>step counter</title></head>
  <body>
    <h1>step counter</h1>
    <%= yield %>
  </body>
  </html>
  EOS
end

get '/' do
  redirect '/record/'
end

# get all records
get '/record/' do
  query = AppEngine::Datastore::Query.new('Record')
  if (params[:steps])
    @records = query.filter('steps', AppEngine::Datastore::Query::GREATER_THAN_OR_EQUAL, params[:steps])
  else
    @records = query.fetch
  end
  erb %{
    <h2>post new steps</h2>
    <form action="/record/" method="post">
      date: <input type="text" name="date" /><br />
      steps: <input type="text" name="steps" /><br />
      <input type="submit" value="send" />
    </form>

    <h2>step records</h2>
    <form action="." method="get">
      <input type="text" name="steps" />
      <input type="submit" value="steps filter" />
    </form>
    <table border="1">
      <tr>
        <th>date</th>
        <th>steps</th>
        <th>delete</th>
      </tr>
      <% @records.each do |record| %>
      <tr>
        <td><a href="/record/<%=h record[:date] %>"><%=h record[:date] %></a></td>
        <td><%=h record[:steps] %></td>
        <td>
          <!-- delete form -->
          <form action="/record/<%=h record[:date] %>" method="post">
            <input type="hidden" name="_method" value="delete" />
            <input type="submit" value="delete" />
          </form>
        </td>
      </tr>
      <% end %>
    </table>
  }
end

# get one record
get '/record/:date' do
  @key = AppEngine::Datastore::Key.from_path('Record', params[:date])
  begin
    @record = AppEngine::Datastore.get(@key)
  rescue AppEngine::Datastore::EntityNotFound => e
    @record = nil
  end
  if @record
    erb %{
      <h2>found record</h2>
      date: <%=h @record[:date] %><br />
      key: <%=h @key %><br />
      steps: <%=h @record[:steps] %><br />
    }
  else
    erb %{
      <h2>not found record</h2>
      date: <%=h params[:date] %><br />
      key: <%=h @key %><br />
    }
  end
end

# create new record
post '/record/' do
  @record = AppEngine::Datastore::Entity.new('Record', params[:date])
  @record[:date] = params[:date]
  @record[:steps] = params[:steps]
  new_key = AppEngine::Datastore.put(@record)   # new_key == record.key
  erb %{
    <h2>post complete!</h2>

    date: <%=h @record[:date] %><br />
    steps: <%=h @record[:steps] %><br />
    record: <%=h @record.inspect %><br />
    entity key: <%=h @record.key %><br />
    key class: <%=h @record.key.class %><br />

    <a href="/record/">back</a>
  }
end

# delete one record
delete '/record/:date' do
  @key = AppEngine::Datastore::Key.from_path('Record', params[:date])
  @record = AppEngine::Datastore.delete(@key)
  erb %{
    <h2>delete complete!</h2>
    date: <%=h @record[:date] %><br />
    key: <%=h @key %><br />
    steps: <%=h @record[:steps] %><br />
  }
end
	require 'rubygems'
	require 'sinatra'
	require 'appengine-apis/datastore'

	# Make sure our template can use <%=h
	helpers do
	include Rack::Utils
	alias_method :h, :escape_html
	end

	template :layout do
	<<-EOS
	<html>
	<head><title>step counter</title></head>
	<body>
	<h1>step counter</h1>
	<%= yield %>
	</body>
	</html>
	EOS
	end

	get '/' do
	redirect '/record/'
	end

	# get all records
	get '/record/' do
	query = AppEngine::Datastore::Query.new('Record')
	if (params[:steps])
	@records = query.filter('steps', AppEngine::Datastore::Query::GREATER_THAN_OR_EQUAL, params[:steps])
	else
	@records = query.fetch
	end
	erb %{
	<h2>post new steps</h2>
	<form action="/record/" method="post">
	date: <input type="text" name="date" /><br />
	steps: <input type="text" name="steps" /><br />
	<input type="submit" value="send" />
	</form>

	<h2>step records</h2>
	<form action="." method="get">
	<input type="text" name="steps" />
	<input type="submit" value="steps filter" />
	</form>
	<table border="1">
	<tr>
	<th>date</th>
	<th>steps</th>
	<th>delete</th>
	</tr>
	<% @records.each do \|record\| %>
	<tr>
	<td><a href="/record/<%=h record[:date] %>"><%=h record[:date] %></a></td>
	<td><%=h record[:steps] %></td>
	<td>
	<!-- delete form -->
	<form action="/record/<%=h record[:date] %>" method="post">
	<input type="hidden" name="_method" value="delete" />
	<input type="submit" value="delete" />
	</form>
	</td>
	</tr>
	<% end %>
	</table>
	}
	end

	# get one record
	get '/record/:date' do
	@key = AppEngine::Datastore::Key.from_path('Record', params[:date])
	begin
	@record = AppEngine::Datastore.get(@key)
	rescue AppEngine::Datastore::EntityNotFound => e
	@record = nil
	end
	if @record
	erb %{
	<h2>found record</h2>
	date: <%=h @record[:date] %><br />
	key: <%=h @key %><br />
	steps: <%=h @record[:steps] %><br />
	}
	else
	erb %{
	<h2>not found record</h2>
	date: <%=h params[:date] %><br />
	key: <%=h @key %><br />
	}
	end
	end

	# create new record
	post '/record/' do
	@record = AppEngine::Datastore::Entity.new('Record', params[:date])
	@record[:date] = params[:date]
	@record[:steps] = params[:steps]
	new_key = AppEngine::Datastore.put(@record) # new_key == record.key
	erb %{
	<h2>post complete!</h2>

	date: <%=h @record[:date] %><br />
	steps: <%=h @record[:steps] %><br />
	record: <%=h @record.inspect %><br />
	entity key: <%=h @record.key %><br />
	key class: <%=h @record.key.class %><br />

	<a href="/record/">back</a>
	}
	end

	# delete one record
	delete '/record/:date' do
	@key = AppEngine::Datastore::Key.from_path('Record', params[:date])
	@record = AppEngine::Datastore.delete(@key)
	erb %{
	<h2>delete complete!</h2>
	date: <%=h @record[:date] %><br />
	key: <%=h @key %><br />
	steps: <%=h @record[:steps] %><br />
	}
	end