[Rails] Re: Rails and Machine Learning implementation of Python or Ruby

[Adrián Rama Aguilar]

And it will be possible to use scientific libraries.??

El viernes, 16 de agosto de 2019, 16:34:16 (UTC-4), Adrián Rama Aguilar  
escribió:

Hi everyone.!!
>
> I'm working in a ROR app, which manages banks and I'd like to implement 
> machine learning for predictions such as ip connections, number of 
> transactions or number of sing in users by institucion in the app, so I've 
> been reading about linear regresion, but most of the info or how to do it 
> is with pyhton, so here comes my doubts to know if python modules can be 
> implemented or how to do this implementation in machine learnig in Ruby at 
> a ROR app. Thank you and I look forward to your contributions.
>

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Re: [Rails] Rails and Machine Learning implementation of Python or Ruby

['Jake Niemiec' via Ruby on Rails: Talk]

> implement machine learning for predictions such as ip connections, number
of transactions or number of sing in users by institucion in the app

Do you want to predict user growth over time? You may get further with
predictive modelling rather than machine learning. (and with less pain)

Best of both worlds: https://ankane.org/rails-meet-data-science

On Fri, Aug 16, 2019 at 3:34 PM Adrián Rama Aguilar <
adrianramaagui...@gmail.com> wrote:

> Hi everyone.!!
>
> I'm working in a ROR app, which manages banks and I'd like to implement
> machine learning for predictions such as ip connections, number of
> transactions or number of sing in users by institucion in the app, so I've
> been reading about linear regresion, but most of the info or how to do it
> is with pyhton, so here comes my doubts to know if python modules can be
> implemented or how to do this implementation in machine learnig in Ruby at
> a ROR app. Thank you and I look forward to your contributions.
>
> --
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> 
> .
>

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Re: [Rails] Rails and Machine Learning implementation of Python or Ruby

[Walter Lee Davis]

Ruby will happily co-exist with python, if you want to "shell out" to that 
language, you can read the response back in and continue in Ruby. There are at 
least three ways to do this, from the humble back-tick ` operator to Open3 or 
the system call. And, hang on, there's Terrapin 
https://github.com/thoughtbot/terrapin to make this even safer.

Walter

> On Aug 16, 2019, at 11:53 AM, Adrián Rama Aguilar 
>  wrote:
> 
> Hi everyone.!!
> 
> I'm working in a ROR app, which manages banks and I'd like to implement 
> machine learning for predictions such as ip connections, number of 
> transactions or number of sing in users by institucion in the app, so I've 
> been reading about linear regresion, but most of the info or how to do it is 
> with pyhton, so here comes my doubts to know if python modules can be 
> implemented or how to do this implementation in machine learnig in Ruby at a 
> ROR app. Thank you and I look forward to your contributions.
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
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> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/rubyonrails-talk/8a685786-e433-4fe4-b635-2387a7b3a15d%40googlegroups.com.

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[Rails] Rails and Machine Learning implementation of Python or Ruby

[Adrián Rama Aguilar]

Hi everyone.!!

I'm working in a ROR app, which manages banks and I'd like to implement 
machine learning for predictions such as ip connections, number of 
transactions or number of sing in users by institucion in the app, so I've 
been reading about linear regresion, but most of the info or how to do it 
is with pyhton, so here comes my doubts to know if python modules can be 
implemented or how to do this implementation in machine learnig in Ruby at 
a ROR app. Thank you and I look forward to your contributions.

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[Rails] certbot with passenger/nginx

[fugee ohu]

How can i have certbot ignore passenger directives in nginx.conf?

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Re: [Rails] How do I let nginx know I'm using rails?

[Walter Lee Davis]

Passenger is an application server that can either run as a plug-in to a web 
server, just like fastcgi or mod_php, or as a stand-alone server. When it runs 
as a stand-alone server, it actually uses an embedded copy of nginx as part of 
its code—but don’t let that confuse you. It’s still an application server, 
running as a separate process from the ‘http’ nginx server that is listening 
for requests from browsers. That ‘http’ server needs to be configured with a 
reverse proxy to the application server.

And an aside: Passenger is the best-documented, easiest to use application 
server I have ever used. I would not be so quick to run away from it. Figure 
out what your certbot issue is and fix that. You have a lot more work ahead of 
you to use a different approach. 

Walter

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Re: [Rails] How do I let nginx know I'm using rails?

[fugee ohu]

On Friday, August 16, 2019 at 6:58:01 AM UTC-4, Walter Lee Davis wrote:
>
> NGINX on its own cannot "run" Rails, because it is a simple httpd server. 
> Rails needs an application server -- puma, unicorn, passenger -- to be a 
> bridge between http and Rack protocols. Rails is a Rack application, under 
> all the layers, and cannot host anything all by itself. Don't be confused 
> by the fact that passenger can run as an Apache or NGINX plugin. That's 
> just an implementation detail. Passenger can run as a stand-alone 
> application server, too. 
>
> The pattern is this: Application Server starts up, accepts connections at 
> some port, like 12345. NGINX or Apache or whatever Web Server starts up, 
> accepts connections at 80 or 443 or both. A "reverse proxy" is configured 
> in the Web Server configuration, and when a request comes in that matches 
> it, the request is proxied to the Application Server. The response from the 
> Application Server is then proxied back through the Web Server to the 
> requesting browser. 
>
> 1. Figure out which Application Server you want to use to run your Rails 
> application, and configure it to start at system start, and to restart when 
> you need it to (every time you update your Rails code). 
> 2. Google "how do I configure a reverse proxy in NGINX". Do what you see 
> in the results. 
>
> That's how you set this up. 
>
> Walter 
>
> > On Aug 15, 2019, at 10:03 PM, fugee ohu > 
> wrote: 
> > 
> > 
> > 
> > On Thursday, August 15, 2019 at 2:51:44 PM UTC-4, Walter Lee Davis 
> wrote: 
> > Set up a reverse proxy in nginx, pointed from port [80,443] to whatever 
> port your application server [puma, unicorn, webrick] is listening at. 
> > 
> > Walter 
> > 
> > > On Aug 15, 2019, at 2:43 PM, fugee ohu  wrote: 
> > > 
> > > How do I let nginx know I'm using rails when I'm not using passenger 
> but instead system installed nginx standalone with rails apps 
> > > 
> > > -- 
> > > You received this message because you are subscribed to the Google 
> Groups "Ruby on Rails: Talk" group. 
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> https://groups.google.com/d/msgid/rubyonrails-talk/1aff5f48-504a-426f-96c9-dadefea8025f%40googlegroups.com.
>  
>
> > 
> > 
> >  Not exactly the answer I was looking for If I'm using rails with nginx 
> system install, not the passenger nginx module, then how does the nginx 
> webserver know that I'm running RoR apps because the problem is that nginx 
> is looking for resource routes as subdirectories of /public 
> >   
> > 
> > -- 
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>  
>
>  


Certbot was erroring out on Passenger statements in nginx.conf so I decided 
not to use Passenger anymore, just nginx, I thought I could do that but you 
say no I can't Is that right? 

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Re: [Rails] How do I let nginx know I'm using rails?

[Walter Lee Davis]

NGINX on its own cannot "run" Rails, because it is a simple httpd server. Rails 
needs an application server -- puma, unicorn, passenger -- to be a bridge 
between http and Rack protocols. Rails is a Rack application, under all the 
layers, and cannot host anything all by itself. Don't be confused by the fact 
that passenger can run as an Apache or NGINX plugin. That's just an 
implementation detail. Passenger can run as a stand-alone application server, 
too.

The pattern is this: Application Server starts up, accepts connections at some 
port, like 12345. NGINX or Apache or whatever Web Server starts up, accepts 
connections at 80 or 443 or both. A "reverse proxy" is configured in the Web 
Server configuration, and when a request comes in that matches it, the request 
is proxied to the Application Server. The response from the Application Server 
is then proxied back through the Web Server to the requesting browser.

1. Figure out which Application Server you want to use to run your Rails 
application, and configure it to start at system start, and to restart when you 
need it to (every time you update your Rails code).
2. Google "how do I configure a reverse proxy in NGINX". Do what you see in the 
results.

That's how you set this up.

Walter

> On Aug 15, 2019, at 10:03 PM, fugee ohu  wrote:
> 
> 
> 
> On Thursday, August 15, 2019 at 2:51:44 PM UTC-4, Walter Lee Davis wrote:
> Set up a reverse proxy in nginx, pointed from port [80,443] to whatever port 
> your application server [puma, unicorn, webrick] is listening at. 
> 
> Walter 
> 
> > On Aug 15, 2019, at 2:43 PM, fugee ohu  wrote: 
> > 
> > How do I let nginx know I'm using rails when I'm not using passenger but 
> > instead system installed nginx standalone with rails apps 
> > 
> > -- 
> > You received this message because you are subscribed to the Google Groups 
> > "Ruby on Rails: Talk" group. 
> > To unsubscribe from this group and stop receiving emails from it, send an 
> > email to rubyonra...@googlegroups.com. 
> > To view this discussion on the web visit 
> > https://groups.google.com/d/msgid/rubyonrails-talk/1aff5f48-504a-426f-96c9-dadefea8025f%40googlegroups.com.
> >  
> 
> 
>  Not exactly the answer I was looking for If I'm using rails with nginx 
> system install, not the passenger nginx module, then how does the nginx 
> webserver know that I'm running RoR apps because the problem is that nginx is 
> looking for resource routes as subdirectories of /public
>  
> 
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