I tried to reload rails environment with the reload! command, I think it might be depracated. Does anyone know the modern way of reloading the rails environment? This book is available free for download, Im on page 79, it's Michael Hartl's "RailsSpace: Building a social networking website with ruby on rails", published in 2007, several people suggested that I give up on the book already, I just wanted to make sure it wasn't a modern way of doing things before I gave up on the book. So many experts on stackoverflow helped me get through the book already, I decided to take my chances.
Here is a link to the book: https://pdfs.semanticscholar.org/ca98/3b5098cd5957dc1842bb4bf3175406624bca.pdf?_ga=2.121598472.1814901715.1569094472-1963651489.1569094472, its one of the only FREE sources out there for building a social media website thats why I cant give up on it so easily, even though it was published in 2007 and its a bit outdated. Plus I just want to see what stackoverflow can do for me before I just give up on the book. So many experts on stackoverflow helped me make it this far, Im curious to find out if I can get through the entire book with stackoverflow. If anyone knows a better source that's free, please send me a link. Right now page 79, is the roadblock, its that reload! command that might be depracated. Maybe its an expert on stackoverflow that knows the knew command for it. If that's you please help. I already tried googling it, it took me straight here to stackoverflow lol. I decided to post a question of my own, that other guy's question doesn't seem to match mine so here I am. Please help if you can.
Within the Rails console (rails c, or more formally bundle exec bin/rails c) you should be able to run:
reload!
That reloads the active environment, specifically anything within app/ and config/routes.rb, but other things will not be reloaded until you exit and restart the console. This has always been the case.
Note that this is only within the Ruby interactive environment, as in you'll have a prompt that looks like this:
irb(main):001:0>
If you see something else you may not be in the Rails console and are trying to run the command in the wrong context. A common mistake is trying to run this in he shell itself where you'll get an error like:
-bash: reload!: command not found
One other thing you may need to do if you're having trouble getting things to load that should be there is to stop the Spring launcher, forcing it to reload:
spring stop
That kicks the Spring application preloader which can sometimes get confused about what's going on and needs a reset.
Related
This is my last resort to figure this out. I've searched through stackoverflow and googled various topics, but it seems to come down to how to interpret/analyze my own Heroku log. There's so much going on that I'm not sure where to look first. I see things like eager_load and direction to files app/config/environment:rb:5 and there also seems to be issues with my Unicorn configurations and relationship associations. I've gone through my files and haven't been able to locate what my logs are referring to, up until now it's been really easy to interpret errors.
A little background: I had originally built my rails app with the default Sqlite3 settings and I have attempted to switch it to Postgres. So maybe there's some conflicts with that going on as well. I want to be able to read my Heroku Logs in the future on my own and know exactly where to look. So if someone could provide a good tutorial about reading Heroku Logs that would be great as well.
Here's where I've looked so far:
I've looked on devcenter on heroku's website, but I'm not making the connection from their instructions, to the issue in my code. I'm just a that stuck point, but have been trying to figure it out for days! I'm worried that I'm just missing something basic, which is why I haven't been able to figure this out yet.
I've also looked at association_basics.html on ruby on rails guides because I've been having some syntax issues.
I've used foreman start to see if my Procfile is working and have gotten another huge list. I've also used heroku ps, which gives me web.1 crashed
Here's the Heroku Log that's also connected to my app's github page:
https://github.com/jsmit032/seasons-app/issues/29
If any other information is required, please let me know and I'll edit my questions so hopefully this can help others as well.
2014-11-21T19:27:58.271705+00:00 app[web.1]: has_many :user, through :user_to_destinations
doesn't look right - it should be
has_many :user, through: :user_to_destinations
at /app/app/models/destination.rb:3
So I got the whole app to deploy! Turns out it was a pre-complied issue.
So I went through the guide on Heroku for pre-compiling assets in Rails 4: https://devcenter.heroku.com/articles/rails-4-asset-pipeline
I also went through the heroku guide for prepping your rails 4 app:
https://devcenter.heroku.com/articles/getting-started-with-rails4#migrate-your-database
Also went through the heroku guide for SQLite on Heroku and the Deploying Rails Applications with Unicorn guide.
Looking through the console errors on the actual site was a huge help. It's how we figured out that the assets pipeline might not be working.
So... I've been trying to start developing Rails, and I'm having a horrible time setting up my environment.
Installed Ubuntu 12.10 in a VM. Installed RVM. Installed Ruby 1.9.3. Installed Rails. Then Rails console didn't work because I didn't have readline, and I had to start futzing with rvm commands from here and from a Stack Overflow thread, only to get numerous incomprehensible errors.
And that's just me trying to get off the ground and start running. Please oh please, isn't there a ready VirtualBox VM file with a machine preconfigured for development work?
If you would just like one built for you go to: https://railsbox.io
Tutorial will set you you with vagrant/rails much like the other answers are talking about. I haven't used it but it looks solid:
https://gorails.com/guides/using-vagrant-for-rails-development
You could also simply use a remote vm that is setup and available anywhere:
https://c9.io/
There are other similar options out there.
I have used both of them and they function excellently for this purpose, they also troubleshoot well on google because you have multiple people using the same environment. If you are new to Rails/Ruby and are unfamiliar with using a nix environment I highly suggest this route. You will also be able to access them more or less anywhere through a browser.
I know it is rather an old thread but since it came up so easily in a search and the answer wasn't entirely satisfactory when I had found it previously I thought I would broaden the list of options.
Found this: https://github.com/rails/rails-dev-box
Hoping it's going to help; consistent with Branden's comment above.
I currently have a problem with a project.
it freezes before it shows the "Started GET ...." seems like it hits an infinite loop.
now i dont really have much experience with debuggers in ROR, can anyone recommend anything i can use to trace the exact origin of the problem. if i can get an error code somewhere then i might be able to fix it.
currently i am using webrick, i tried thin and it gave the exact same error.but i am willing to use anything to find the exact origin of this error.
it seems to be related to the project because all other projects works fine on my environment.
Take a look at the Rails guide on debugging.
Also try running the Rails console ("rails c"); if you can get to a command prompt at all that means that the issue is not in loading the Rails environment (e.g. a problem in application.rb) but is somewhere in the process of making a web request. If there's a failure it may give you a better error message.
I am on the verge of actually hiring someone to fix this
for me, but I hope it doesn't come to that.
I have no experience with Rails/Ruby, but I do know my way around
computers in general.
I have two domains on one server (Hostingrails, I am beginning to hate
them more and more these days).
My secondary domain works 100% fine.
But for the past few days, my primary domain has not been working, it
has been giving me 503 Errors. I've opened a ticket regarding this, and
they told me to SSH into my server and reset "Mongrel". I've done this
using the code they gave me; "mongrel_rails start -d -e production
-p13930"
It seemed to have worked, but the problem was still there. The log says
the error is something about:
"require': no such file to load -- dispatcher (LoadError)"
I've re-opened a ticket concerning this, and Hostingrails basically told
me that it is not their problem anymore and that it's solely up to me to
fix it. Brilliant.
So I spent a good part of the day looking and changing things around
through SSH (probably wasn't the greatest idea) but I still keep getting
503'd on my website.
However, I recently found out that my index file HAS to be index.html,
or it will not render the page. index.htm or index.php will result in a
503. If I set the index page to index.html, it worked. Which is strange,
my htaccess file allowed for all.
Another problem, I think I have inadvertently changed something in my
settings while I was SSH'd in. When I do "bundle install" it installs
the gems into my own private webspace, for example /home/mywebsite. But
I believe on my shared plan, all the rails/ruby/gems etc are all under
/usr/local/rvm/gems/ruby-1.9.2-p0/ which I don't think I have access to.
How do I change the directory to the default one? For example, before
the error log said:
/usr/local/rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:239:in
`require': no such file to load -- dispatcher (LoadError)
Now it says:
/home/mysite/.gems/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:239:in
`require': no such file to load -- dispatcher (LoadError)
I think that's everything for now. Here are the rails installed on my
server by the host:
Installed at (3.0.0): /usr/local/rvm/gems/ruby-1.9.2-p0
(2.3.8): /usr/local/rvm/gems/ruby-1.9.2-p0
(again, I think my mongrel is looking in the wrong place, as my gems are
now being installed into /home/mywebsite/ instead of
/usr/local/rvm/gems/) Is it possible to someone reset the settings I've
changed back into my host's default one?
Would anyone be willing to take the time and try and fix this with me? I
am pretty annoyed at Hostingrails, since I didn't do anything to create
this problem, and they are outright refusing to help me. Why is my
primary domain getting 503 errors when my secondary domain works fine?
Mongrel is not compatible to ruby 1.9.2. You need use a fork of mongrel to use it https://github.com/kyusik/mongrel_cluster
I advice you to user thin/passenger or unicorn instead of mongrel.
I found a little blog post about problem with Mongrel and ruby 1.9.2 http://xaop.com/blog/2010/08/04/deploying-rails-3-on-ruby-1-9-2/
Maybe you could try using Ruby 1.8.7 - it causes less trouble in general at this time.
Not an answer to your question in particular, but if you're new to Ruby and Rails, then hosting your own stuff can be a daunting task.
Instead, try Heroku - simply push your Rails app to Heroku with git and you're good to go. They support custom domainnames for free.
I'm running Rails 2.2.2. I've read a few articles about ruby-prof and profiling a rails app. And I'm confused as to how things are really working.
I was originally using this tutorial
http://snippets.aktagon.com/snippets/255-How-to-profile-your-Rails-and-Ruby-applications-with-ruby-prof
to profile my app, and it works. This involves writing your own profile environment and running > RAILS_ENV=profiling ./script/performance/request -n 100 profiling/homepage.rb
So here's my confusion. Somehow, this runs ruby-prof and opens up all the stats etc, but I can't see anywhere where ruby-prof is ever actually called.
So then I read further, and it seems 2.2.2 has benchmarking/profiling built in. So I write a test file in the performance section like so
require 'test_helper'
require 'performance_test_help'
# Profiling results for each test method are written to tmp/performance.
class BrowsingTest < ActionController::PerformanceTest
def test_worksheet
get '/reduction/worksheet'
end
end
and run
rake test:profile
Is this equivalent to what I was doing above, but just now it's integrated into the whole rails framework?
My next question is this. The original script ouput a flat file and html file, but I couldn't figure out how to also get a tree file automatically to open up with KCacheGrind, or in my case MacCallGrind. Can I add formats into my script call?
Edit: running the scripts through rake test seem to actually produce a tree file, great. Mac CallGrind however seems to hang when trying to parse it. Anyone know other tools for viewing these tree files?
Turns out, it's exactly the same, I must have been reading an old tutorial. All the benchmarking and profiling is now in Rails which is awesome. And it outputs txt,html and tree files, also awesome. Now if Only MacCallGrind would work, there's no way I'm installing the 4gb of KDE packages needed just to view a tree file.
Brad, you should contact the author of MacCallGrind and see if there's an update, or whether he/she has a fix for your files.
Oh that's right, that's me. Please email at richard at symbol aggmedia.net, as there is an update about to come out, and I'd love to have Ruby/Rails support available.