From: Ruby Student Date: 2013-06-16T01:46:51+09:00 Subject: Re: Can I use Sinatra to render dynamic pages? --001a11335dfe1805dc04df341cbd Content-Type: text/plain; charset=ISO-8859-1 Nick and everyone else, Please accept my apologies if I hurt or insulted anyone feeling with my blatant and clearly lack of knowledge and understanding. Please let me elaborate: I am an AIX system administrator not a programmer, although back on the '70s I was heavily into assembler programming. I am trying to learn Ruby as it appears to me kind of much simpler than other languages such as C, Java, etc. I like simple and easy tools that can help me do my job more efficient. My statement about "overkill" WAS NOT INTENDED TO BE FOR *Sinatra*. If you go back you'll find that I was talking about *TomCat*. I meant to say that perhaps *TomCat* was overkill for the simple thing that I wanted to do. I started playing with *Sinatra* and I to find it simple and very easy to learn and use. As I stated on my original post, I want to create a simple web-based application, which will be invoked from a browser. I will read a file every second. The file contains certain information that changes continuously, 24X7 from January 1 to December 31. This information collection NEVER stops. I have NEVER done anything web related, NEVER. Perhaps, due to my lack of knowledge, I am not posting my question correctly. I want: 1. The user to fire up a browser pointing to my server URL 2. My application will accept the request and send data to the user's browser 3. My application will, every second, read the content of the file and get the new counters 4. Display the new information, counter, on the browser WITHOUT THE USER HAVING TO REFRESH IT. In other words, I want to refresh the browser's content without user having to do anything. The new information must be continuously be updated and displayed. As I said earlier, I did this using *Ruby/Shoes*, but this needs to be used by a number of people and I would have to install Ruby and Shoes every desktop that needs to use this Dashboard. Someone suggested Javascript but I don't want to start learning yet another programming tool when I think that Ruby and some web tool such as Sinatra might be able to help me with this. *Rails* was also suggested. I am probably still not making any sense! I do want to thank you and others for all the answers already posted and perhaps the ones to come. Ruby Student On Fri, Jun 14, 2013 at 9:01 PM, Nicholas Van Weerdenburg < vanweerd@gmail.com> wrote: > Sinatra is as lightweight and simple a framework you can choose for doing > a web app. You can create a complete app in a single file with template > included! > > There is no such thing as Sinatra being overkill for a project. IMHO, the > only simpler alternative is using paper, scissors and glue :) > > I love Sinatra and highly recommend it for anyone learning web > development. Give it a shot- it's a fantastic piece work. > > Did you know that there are dozens, if not more, clones of Sinatra across > different languages? > > And the monster framework for the Node.js, Express, is Sinatra inspired? > > And as Hassan mentioned, Tomcat is a "servlet" container for Java > servlets. Not really related, and far, far more complicated than using Ruby > and Sinatra. I almost had post-traumatic stress syndrome flashbacks seeing > that word- I haven't use Tomcat in over eight years. > > Good luck! > > Cheers, > Nick > > > On Fri, Jun 14, 2013 at 9:14 AM, Ruby Student wrote: > >> Well, I got some good suggestions from everyone here. I thank you all for >> that! >> Now I just need to analyze each suggestion and pick he easiest for me. I >> am not by any mean a mature ruby programmer and I like to do things as easy >> and simple as possible. If Sinatra is overkill for what I want, perhaps I >> should look into something different. I was wondering if TomCat might be >> what I need. Anyway, the entire affair is kind of confusing to me as this >> is the first time I deal with this type of thing. >> >> As I said, I am very grateful to all of you for taking the time to answer >> my post. >> >> >> >> On Thu, Jun 13, 2013 at 11:55 PM, Nicholas Van Weerdenburg < >> vanweerd@gmail.com> wrote: >> >>> You should be able to do this without JavaScript by using streaming. >>> >>> Sinatra has a streaming API as of 1.3. Rails 4.0 is adding a "live" mode >>> for similar. >>> >>> However you need to use a supporting web server and hook into the event >>> loop (which Rack exposes). >>> >>> https://gist.github.com/rkh/1476463 offers an example, but note that >>> the heroku app is broken (look at the comments for a link to a patched >>> version). >>> >>> Nick >>> >>> >>> On Thu, Jun 13, 2013 at 5:41 PM, Ruby Student wrote: >>> >>>> Hell Team, >>>> >>>> I wrote a very simple dashboard using *shoes* which basically displays >>>> statistics, every second, of certain type of messages arriving at a queue >>>> under *MQ*. But in order for anyone to use it they have to install *R >>>> uby*, *shoes *and its requirements. So I started experimenting with *Sinatra >>>> *to re-write my simple application so anyone could point their *browser >>>> * and get the dashboard displayed. I went over the first *basic Sinatra >>>> * tutorial but everything appears to be static. Is there any example >>>> out there that shows *Sinatra* dynamically refreshing the page >>>> continuously with new information, in my case message queues information? >>>> >>>> In other words, once the user successfully get the page displayed, from >>>> that point on I want the content to be refreshed dynamically with the new >>>> information without user intervention. >>>> >>>> Thank you >>>> >>>> -- >>>> Ruby Student >>>> >>> >>> >> >> >> -- >> Ruby Student >> > > -- Ruby Student --001a11335dfe1805dc04df341cbd Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Nick and everyone else,
<= br>
Please accept my apologies if I hurt or insulted anyone feeling wi= th my blatant and clearly lack of knowledge and understanding. Please let m= e elaborate:

I am an AIX system administrator no= t a programmer, although back on the '70s I was heavily into assembler = programming. I am trying to learn Ruby as it appears to me kind of much sim= pler than other languages such as C, Java, etc. I like simple and easy tool= s that can help me do my job more efficient.

My statement about "overkill" WAS NOT INTENDED TO BE FO= R Sinatra. If you go back you'll find that I was talking about <= b>TomCat. I meant to say that perhaps = TomCat was overkill for the simple thing = that I wanted to do. I started playing with Sinatra and I to find it= simple and very easy to learn and use.

As I stated on my original post, I want to create a simple web-ba= sed application, which will be invoked from a browser.
I will read= a file every second. The file contains certain information that changes co= ntinuously, 24X7 from January 1 to December 31. This information collection= NEVER stops.

I have NEVER done anything web related, NEVER. Perhaps, due = to my lack of knowledge, I am not posting my question correctly.
<= div>
I want:

  1. The user to fire up a browser poi= nting to my server URL
  2. My application will accept the request and send data to the user's = browser
  3. My application will, every second, read the content of the = file and get the new counters
  4. Display the new information, counter,= on the browser WITHOUT THE USER HAVING TO REFRESH IT. In other words, I wa= nt to refresh the browser's content without user having to do anything.= The new information must be continuously be updated and displayed.
As I said earlier, I did this= using Ruby/Shoes, but this needs to be used by a number of people a= nd I would have to install Ruby and Shoes every desktop that needs to use t= his Dashboard.

Someone suggested Javascript but I don't want to start l= earning yet another programming tool when I think that Ruby and some web to= ol such as Sinatra might be able to help me with this. Rails was als= o suggested. I am probably still not making any sense!

I do want to thank you and others for all the answers alread= y posted and perhaps the ones to come.

Ruby St= udent


On Fri, Jun 14, 2013 at 9:01 PM, Nichola= s Van Weerdenburg <vanweerd@gmail.com> wrote:
Sinatra is as lightweight and simple a framework you can c= hoose for doing a web app. =A0You can create a complete app in a single fil= e with template included!

There is no such thing as Sina= tra being overkill for a project. IMHO, the only simpler alternative is usi= ng paper, scissors and glue :)

I love Sinatra and highly recommend it for anyone learn= ing web development. Give it a shot- it's a fantastic piece work.
=

Did you know that there are dozens, if not more, clones= of Sinatra across different languages?

And the monster framework for the Node.js, Express, is = Sinatra inspired?

And as Hassan mentioned, Tomcat = is a "servlet" container for Java servlets. Not really related, a= nd far, far more complicated than using Ruby and Sinatra. I almost had post= -traumatic stress syndrome flashbacks seeing that word- I haven't use T= omcat in over eight years.

Good luck!

Cheers,
N= ick


On Fri, Jun 14, 2013 at 9:14 AM, Ruby Student <<= a href=3D"mailto:ruby.student@gmail.com" target=3D"_blank">ruby.student@gma= il.com> wrote:
Well, I got some = good suggestions from everyone here. I thank you all for that!
Now= I just need to analyze each suggestion and pick he easiest for me. I am no= t by any mean a mature ruby programmer and I like to do things as easy and = simple as possible. If Sinatra is overkill for what I want, perhaps I shoul= d look into something different. I was wondering if TomCat might be what I = need. Anyway, the entire affair is kind of confusing to me as this is the f= irst time I deal with this type of thing.

As I said, I am very grateful to all of you for taking the time t= o answer my post.


On Thu, Jun 13, 2013 at 11:55 PM, Nicholas Van = Weerdenburg <vanweerd@gmail.com> wrote:
You should be able to = do this without JavaScript by using streaming.

Sin= atra has a streaming API as of 1.3. Rails 4.0 is adding a "live" = mode for similar.

However you need to use a supporting web server and hook into th= e event loop (which Rack exposes).

https://gist.github.com/= rkh/1476463 offers an example, but note that the heroku app is broken (= look at the comments for a link to a patched version).

Nick

On Thu, Jun 13, 2013 at 5:41 PM, Ruby Stu= dent <ruby.student@gmail.com> wrote:
H= ell Team,

I wrote a very simple dashboard using shoes w= hich basically displays statistics, every second, of certain type of messag= es arriving at a queue under MQ. But in order for anyon= e to use it they have to install Ruby, shoes and= its requirements. So I started experimenting with Sinatra to re-wri= te my simple application so anyone could point their browser and get= the dashboard displayed. I went over the first basic Sinatra tutori= al but everything appears to be static. Is there any example out there that= shows Sinatra dynamically refreshing the page continuously with new= information, in my case message queues information?

In other words, once the user successfully get the page disp= layed, from that point on I want the content to be refreshed dynamically wi= th the new information without user intervention.

Thank y= ou

--
Ruby Student
=




--
Ruby Stud= ent




--
Ruby Student
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