sinatra | Classy web-development | Web Framework library
kandi X-RAY | sinatra Summary
kandi X-RAY | sinatra Summary
Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort:. The code you changed will not take effect until you restart the server. Please restart the server every time you change or use sinatra/reloader. It is recommended to also run gem install puma, which Sinatra will pick up if available.
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Top functions reviewed by kandi - BETA
- Renders custom data .
- Handles the error handling .
- Compile a template
- Process a given path and values .
- Sets HTTP header value .
- Invoke the request .
- Runs the routes defined on the class .
- Sends an HTTP request with the given options .
- Initializes the middleware .
- Finalize the client .
sinatra Key Features
sinatra Examples and Code Snippets
Lines of Code : 5
License : No License
Copyrequire 'sinatra'
get '/hi' do
"Hello World!"
end
Community Discussions
Trending Discussions on sinatra
QUESTION
I have some columns titles essay 0-9, I want to iterate over them count the words and then make a new column with the number of words. so essay0 will get a column essay0_num with 5 if that is how many words it has in it.
so far i got cupid <- cupid %>% mutate(essay9_num = sapply(strsplit(essay9, " "), length))
to count the words and add a column but i don't want to do it one by one for all 10.
i tried a for loop:
...ANSWER
Answered 2022-Apr-08 at 04:54Use across() to apply the same function to multiple columns:
QUESTION
@pagy is returning nil in my view (#).
It works as expected in the console:
...ANSWER
Answered 2022-Apr-01 at 15:01@pagy needs to be called before your erb call.
Like this:
QUESTION
I'm creating a simple and portable web application with Sinatra on Ruby, and I'm letting the system find an open port for the server to use with the following:
...ANSWER
Answered 2022-Mar-11 at 19:54Try this
QUESTION
I'm trying to migrate my Sinatra App from the legacy Amazon Linux to V2 on Elastic Beanstalk using the Thin Server. The Thin Server refuses to start on deploy. However, it starts fine and works correctly if I manually start it as the webapp user with the command:
...ANSWER
Answered 2022-Mar-11 at 15:10The solution is to not daemonize the Thin server in config.yml
QUESTION
On my local machine I'm using rbenv
When I run bundle install I get:
ANSWER
Answered 2022-Mar-08 at 09:41Finally got it working.
So the key to the problem as well to the solution was the fact that which bundle gave:
QUESTION
I implemented action cable in our rails backend and angularjs frontend using angular-actioncable, it is all working as expected, client to server websocket connection is established and broadcasts and receives are working but when I start the app, it always throws a rack lint error and a 500 error on GET /cable,
...ANSWER
Answered 2022-Feb-15 at 02:24For anyone else having the same issue, the reason was Rack does socket highjacking while upgrading the http protocol to websockets and returns a -1 which the rack lint doesn't see as a valid http satus, in development you can set RACK_ENV=deployment RAILS_ENV=development to test and you can stub the headers/status check for action cable with a simple initializer, more details here, initializer from the link above,
QUESTION
I have a rails app using sidekiq, sidekiq-status, and sidekiq batching:
...ANSWER
Answered 2022-Jan-31 at 22:48Your Procfile defines process types, but it doesn't make them run.
Each process type can run on zero or more dynos. To change the number of dynos for each process type you can use the heroku ps:scale command. For example, to scale your low_worker process type to one dyno you can do
QUESTION
I have a Sinatra app (app.rb) that resides within within /var/www/example. My setup is nginx, thin, and sinatra.
I have both nginx and thin up and running but when I navigate to my site, I get a 404 from nginx. I assume that the server block config is wrong. I've tried pointing root to /var/www/example/ instead of public but that makes no difference. I don't think the request makes it as far as the sinatra app.
What am I doing wrong?
Server block:
...ANSWER
Answered 2022-Jan-21 at 22:44You have to tell nginx to proxy requests to your Sinatra application. The minimum required to accomplish that is to specify a proxy_pass directive in the location block like this:
QUESTION
I have a Sinatra app that is running on Thin with Nginx as a reverse proxy and receives a lot of traffic. My users are reporting 502 errors and looking at the Nginx logs i see a lot of these:
...ANSWER
Answered 2022-Jan-05 at 22:41So the problem was actually with Thin server, for some reason it kept crashing every few minutes with a C++ error and therefore Nginx would throw those errors while attempting to connect to Thin and failing (because Thin would be crashing/rebooting).
The solution was to replace Thin with Puma, after that no more issues.
QUESTION
I have systemd service for a Sinatra app running with Thin server behind an Nginx reverse proxy. It works fine but because it receives a lot of traffic i'm seeing a lot of nginx errors about being unable to connect to upstream. Upon inspecting the service i noticed that it never runs for very long, just a few minutes at best which would explain why Nginx can't connect a lot of times (while the service is rebooting).
Looking at the output of journalctl for the service i see a lot of this:
ANSWER
Answered 2022-Jan-05 at 22:39So it seems the problem was within the Thin server, once I replaced it with Puma all problems disappeared.
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Install sinatra
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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