Module: Sinatra::REST

Defined in:
lib/sinatra/rest-json.rb,
lib/sinatra/rest_json.rb

Constant Summary collapse

NOT_FOUND = 
{ :errors => ["record doesn't exist"] }.to_json
MODEL_REGEX = 
/([A-Z0-9]{1}[a-z0-9]+)/

Instance Method Summary collapse

Instance Method Details

#rest_json(model_class, opts = {}) ⇒ Object 



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# File 'lib/sinatra/rest-json.rb', line 9

def rest_json(model_class, opts = {})
  model_name = model_class.name.scan(MODEL_REGEX).join("_").downcase
  route_name = model_class.table_name

  # all
  get "/#{route_name}" do
    content_type :json
    "["  + model_class.all.collect { |m| m.to_json }.join(",") + "]"
  end

  # find
  get "/#{route_name}/:id" do
    content_type :json
    model = model_class.find(params[:id].to_i)

    if model.nil?
     NOT_FOUND 
    else
      model.to_json
    end
  end

  # create
  post "/#{route_name}" do
    content_type :json

    model = model_class.new(params[model_name])

    if model.save
      model.to_json
    else
      { :errors => model.errors }.to_json
    end
  end

  # update
  put "/#{route_name}/:id" do
    content_type :json

    model = model_class.find(params[:id].to_i)

    if model.nil?
      NOT_FOUND
    else
      if model.update_attributes(params[model_name])
        model.to_json
      else
        { :errors => model.errors }.to_json
      end
    end
  end

  # delete
  delete "/#{route_name}/:id" do
    content_type :json

    model = model_class.find(params[:id].to_i)

    if model.nil?
      NOT_FOUND
    else
      model.destroy.to_json
    end
  end
end