In Sinatra version 1.1.0 I was able to use configure inside a before block. In version 1.4.5 this is no longer possible. Instead an error is thrown.
The error:
undefined method 'configure' for #<MySinatraServer:0x3f17a60>
file: web.rb location: block in <class:MySinatraServer> line:6
The class definition:
require 'sinatra'
class MySinatraServer < Sinatra::Base
before do
configure :production do
halt 404, "insecure connection not allowed" if !request.secure?
end
end
get '/' do
"Hello Cruel World"
end
end
Running with thin start, config.ru shown below:
map "/" do
run MySinatraServer
end
Why does configure no longer work inside the before block?
Accessing the configure block inside of the before block requires accessing the settings helper. The code now works.
Code here:
before do
settings.configure :production do
halt 404, "insecure connection not allowed" if !request.secure?
end
end
Another gotcha is that the after block now runs when you halt. Ah the joys of upgrading framework versions!
Related
I'm very new to Sinatra, and I'm trying to get asset management & compiling working according to this article. Here is my main file so far:
require 'sinatra/base'
require 'sinatra/assetpack'
require 'sass'
class App < Sinatra::Base
register Sinatra::AssetPack
assets do
css :application, [
'/css/main.scss'
]
css_compression :sass
end
get '/hi' do
erb "Hello World!"
end
end
but, for some reason, when I run ruby main.rb, it just exits without failure or anything. Is there a special keyword to get the application to serve files?
Using the modular style of Sinatra application, as you are doing, running ruby main.rb is going to exit without error because it is being treated as a standard ruby application and no webserver is ever created.
You have two options.
1 Add run! if app_file == $0 just before the final end statement in your example.
This will allow you to run the app with ruby main.rb
2 (This is the preferred method) Create a rackup file config.ru with the following contents.
require './main.rb'
run App
Now you can serve the application with the command rackup -p 4567 where 4567 is whatever port number you want to use.
You need to start the application
require 'sinatra/base'
require 'sinatra/assetpack'
require 'sass'
class App < Sinatra::Base
register Sinatra::AssetPack
assets do
css :application, [
'/css/main.scss'
]
css_compression :sass
end
get '/hi' do
erb "Hello World!"
end
run! if app_file == $0
end
one observation, erb should point to a template, example:
get '/hi' do
erb :home
end
should look for a file in ../views/home.erb
Also Assuming you already did gem install sinatra. I would also use the rerun gem while developing in sinatra, gem install rerun then rerun ruby app.rb. Rerun will reload your project when you make changes to your code so you won't have to restart the app when ever you make a change.
I'm trying to make my sinatra app show a custom error page when an error is raised on the server (e.g. an IOError or ArgumentError).
Currently I'm using AJAX to load the results into a certain #results div, but if and when an error arises on the server, I would like an error page to open up on a new page.
Currently, the IOError is shown on the server and a error is seen in the console (the server responded with a status of 500 (Internal Server Error)). Other than that, nothing happens.
I think that I have to play about with the Javascript (as well as the Sinatra::Base class) but I've spent the whole of yesterday and this morning not getting anywhere.
I would be very grateful for any help. I've created an oversimplified version of my app which I have shown below...
Sinatra_app.rb
require 'sinatra/base'
require9 'sinatra'
require 'slim'
# A helper module
module GVhelpers
def create_results(name)
# raise IOError, "There's a problem..."
return "<p>The Server Says 'Hey #{name}'</p>"
end
end
class GVapp < Sinatra::Base
helpers GVhelpers
set :root, File.dirname(__FILE__)
error do
#error = env['sinatra.error']
slim :"500", :locals => {:error => error}
end
get '/' do
slim :index
end
post '/form' do
name = params[:personName]
create_results(name)
end
end
GVapp.run!
index.slim (in views folder)
script src="/jquery.min.js"
script src="/Gvapp.js"
form#sayHey action="/form" method="post"
| Name:
input type="text" name="personName"
br
input type="submit"
#output
500.slim (in views folder)
h1 Oops! Something went Wonky!
p Apologies, there was an error with your request:
strong request.env['sinatra.error'].message
p If the error persists, please contact the administrator.
Gvapp.js (in public folder)
$(document).ready(function() {
$('#sayHey').submit(function(e) {
e.preventDefault();
$.ajax({
type: 'POST',
url: '/form',
data: $('#sayHey').serialize(),
success: function(response){
$('#output').html(response);
}
})
})
})
Sinatra swallows exceptions when run in the development environment by default and shows its debugging error page instead. So, to trigger your custom error handlers, you have to either run the application inside a Rack environment other than development (probably production), or preferably, tell Sinatra to not use its default error handlers in development mode.
Consider the following, standalone Sinatra application example:
require "sinatra"
#disable :show_exceptions
get "/" do
raise RuntimeError.new("boom")
end
error RuntimeError do
"A RuntimeError occured"
end
If you run this application using the default development environment like this:
$ ruby foo.rb
Then you will get Sinatra’s default error page. If you uncomment the disable line in the example, the error handler will be triggered instead, displaying a page containing "A RuntimeError occured". Alternatively, you can, as explained, run the application in an environment other than development as only that one pre-sets the show_exception setting. You can do that by setting the RACK_ENV environment variable:
$ RACK_ENV=production ruby foo.rb
For development purposes, setting RACK_ENV to production is not the correct way of course. Use disable :show_exceptions instead. You can use a configure block as outlined in the Sinatra README to conditionally disable the setting for the development environment.
configure :development do
disable :show_exceptions
end
That behaviour is documented in Sinatra’s documentation on configuration, along with several other useful settings.
I've tried running this with Ruby 1.9.3 as well as 2.0, but nothing seemed to work. Here's the code:
require 'sinatra'
before do
set :display_string, 'Welcome from Ruby!'
end
get '/' do
settings.display_string
end
The error is:
NoMethodError at /
undefined method `set' for (sinatra application code here)
This code:
set :display_string, 'Welcome from Ruby!'
seems to cause the issue. I'm running Thin 1.5.1 , latest version of Sinatra 1.4.3
EDIT: It seems that this works well if set is not inside the "before do/end" block. So it's something about the set being in the before do/end block.
I think you should set your configure with configure block:
before do
configure do
set :display_string, 'Welcome from Ruby!'
end
end
see more sinatra docs about the configure
Ok so. I'm wanting to do request specs with RSpec for my Sinatra app.
I have a config.ru
# config.ru
require File.dirname(__FILE__) + '/config/boot.rb'
map 'this_route' do
run ThisApp
end
map 'that_route' do
run ThatApp
end
The boot.rb just uses Bundler and does additional requires for the rest of the app:
ThisApp looks like:
# lib/this_app.rb
class ThisApp < Sinatra::Base
get '/hello' do
'hello'
end
end
So I'm using RSpec and I want to write request specs like:
# spec/requests/this_spec.rb
require_relative '../spec_helper'
describe "This" do
describe "GET /this_route/hello" do
it "should reach a page" do
get "/hello"
last_response.status.should be(200)
end
end
it "should reach a page that says hello" do
get "/hello"
last_response.body.should have_content('hello')
end
end
end
end
This works fine because my spec_helper.rb is setup as follows:
# spec/spec_helper.rb
ENV['RACK_ENV'] = "test"
require File.expand_path(File.dirname(__FILE__) + "/../config/boot")
require 'capybara/rspec'
RSpec.configure do |config|
config.include Rack::Test::Methods
end
def app
ThisApp
end
But my problem is that I want to test "ThatApp" from my rackup file along with any amount more apps I might add later along with "ThisApp". For example if I had a second request spec file:
# spec/requests/that_spec.rb
require_relative '../spec_helper'
describe "That" do
describe "GET /that_route/hello" do
it "should reach a page" do
get "/hello"
last_response.status.should be(200)
end
end
it "should reach a page that says hello" do
get "/hello"
last_response.body.should have_content('hello')
end
end
end
end
RackTest requires the rack app I'm testing be defined in the spec_helper file with that 'app' method, and I think eventually I'm going to have to feed Capybara.app the same thing as well when doing further request specs with it.
I feel like I'm missing something and maybe there's an easy way to setup 'app' for RackTest and Capybara at runtime depending on what route and consequent rack app I'm testing in my request specs. Like a before filter in RSpec.configure maybe, but I can't think of or find how I'd access what rack app is currently loaded and try and set it there before the test suite runs.
Anyone get what I'm trying to do and can think of something? Thanks for any help.
Define a different helper module for each sinatra app you want to test, each of which should define its own app method that returns the corresponding app. Then you can simply include MySinatraAppHelper in the appropriate example groups where you want to test the the given app.
You can also use rspec metadata to have the module included in example groups automatically.
Have a look at my sinatra-rspec-bundler-template. Especially at the spec files. I think that's what you are trying to achieve.
It combines two separate Sinatra apps each with it's own specs.
I use Sinatra modular style, i don't know what going bad. I serach google but didn't find anything
require 'sinatra/base'
class App < Sinatra::Base
get '/' do
haml '%h1 Test'
end
end
run App
And a see test.rb:12:in <main>': undefined methodrun' for main:Object (NoMethodError)
What going wrong?
did you run it via ruby -rubygems hi.rb (assuming this code is in hi.rb). If so, you don't need run App. Unless you are running it through another framework built on/with Sinatra.
Also might want to include haml...
You have a config.ru:
# config.ru
require 'my_app'
run MyApp
and a my_app.rb:
# my_app.rb
require 'sinatra/base'
require 'haml'
class MyApp < Sinatra::Base
get('/') { haml '%h1 Test' }
# start the server if ruby file executed directly
run! if app_file == $0
end
then in the folder where the my_app.rb is run this to start the app on localhost:4657:
rackup -p 4567
Regarding the comment above where the error below is displayed:
`start_tcp_server': no acceptor (RuntimeError)
This appears when you are trying to bind to an already bound port. Trying a different port number should resolve.