Stylesheets Missing - Ruby On Rails Application - javascript

I have a Ruby On Rails App. I am using Cpanel on centos 6.4 with phusion passenger.
My app runs fine with all the controllers and models working okk.
The issue is , I have Stylesheets, JS and Images in a folder named public (generally it is).
I have included all of them in my app but i get following error with all of them.
No route matches "/javascripts/application.js" with {:method=>:get}
I am sure that all my files have correct path as previously when i use to use the app with mongrel, it use to work fine.
My .htaccess code is :-
RailsBaseURI /
PassengerAppRoot /home/crosstr/rails_apps/appname/public
My App specifications are :-
Ruby 1.8.7-p352
Rails 2.3.5
Any help will be appreciated.
Thank you

You might need to change this setting to true -
config.serve_static_assets = true
in the environment/production.rb file. It's false by default in production.
http://guides.rubyonrails.org/configuring.html#rails-general-configuration
Update
The above is Rails 3 only, my mistake.
PassengerAppRoot should point to the app root, and not public

Related

Not found .map extension from node_modules in rails app

I try to integrate angular to rails app. I extended assets folder by
config.assets.paths << Rails.root.join('node_modules')
and it's good work but my console has serveral messages error
http://localhost:3000/assets/rxjs/Subject.js.map
Rails app couldn't .map extension how to load it
Those are "javascript source map" files. If your Subject.js javascript file has been minimized/uglified, then you can generate and add a "map" file to let browsers know how to "unminimize"/"unuglify" your js file.
If the Subject.js file is written by you, then I guess your environment setup with different node.js and gulp.js modules has it enabled. Make sure those files are copied to your /assets folder as well.
Alternatively, you can disable them by removing special comment at the end of your javascript file:
//# sourceMappingURL=/assets/rxjs/Subject.js.map
Or, less likely, your server might be sending X-SourceMap header.

Serving ember app from IIS resulting in UnrecognizedURLError

I am trying to serve an ember app from IIS.
I created a new app using ember new my-app and then ran ember build --environment production. This generated the files in the dist directory as expected.
On the IIS side, I added a new website on the server and mapped the dist folder from the last step.
Now, when I navigate to localhost/index.html I get a blank page.
I checked the source of the page and the js files are being served correctly as expected. This would mean that it's the templates that are not being retrieved correctly. In the chrome inspector console there is an exception which says Uncaught: UnrecognizedURLError: /index.html. The ember inspector says 'Ember application not detected!'.
I've tried the solutions mentioned here, but none has worked for me.
Has anyone else experienced this problem/know how to fix this?
Ember Router uses location: history by default. This means, it assumes that /index.html is your route. But obviously it's not defined so the router throws UnrecognizedURLError.
There are several solutions for your problem:
Set locationType: 'hash' in config/environment.js of your ember application. This will force Ember router to use # in url for routing and in your case this would be like localhost/index.html#your/route.
Configure your IIS instance to handle index.html as a default document. To do this, open your server config and make sure it has the key:
Change ember build config to produce index.aspx instead of index.html. You can read about it here.

Rails application not pre-compliling asset into public\assets

I'm working on a Rails 4.0 app with following directory structure
-app
|->javascript
|->page-specific
|->myjavasript.js
In my application.css I have removed required tree directive to make sure I don't include all js on every page.
//= require_tree .
Now to include my javasript I used following syntax on my page:
The application works fine on my development environment but when I push my changes to my production environment, I get 404 when I browser make a call to get javascript.
I call made in production is:
server-name/javascripts/page_specific/myjavasript.js
I call made in develop machine is:
server-name/assets/page_specific/myjavasript.js?body=1
I read a bit about asset pipelines and added following to my production.rb:
config.assets.precompile += ['page_specific/myjavasript.js']
But still my public\assets folder doesn't contain myjavasript.js, and keep on getting a 404.
I have a couple of questions, I do I add page specific (not-cpntroller specific) assets to my app?
Why is it working on development and not in production, what is done differently?
How can I fix it?
In firebug I see:
"NetworkError: 404 Not Found - https://my-server/javascripts/page_specific/myjavasript.js"
Just try,
config.assets.precompile += ["page-specific/*"]
Then, open up rails console and run the below line to know whether page-specific folder is there under your app asset paths:
Rails.application.config.assets.paths
Hope it helps :)

Export static HTML+CSS+JS from Rails

When creating static apps I often start a new Rails app. This makes quite some things easier, like compilation (Coffeescript, SCSS), minimization (JS, CSS) and browser limitations (the page is being served from localhost:3000 so external sources can be loaded etc.).
At the end I want to export the app so I can put it online. Then I just need the HTML+CSS+JS. One can go and pluck the files out manually, but there probably is an easier way for this.
So: is there a tool that stores the compiled, minimized HTML+CSS+JS files from a Rails app?
If you just want to basically copy the website as it will be rendered by rails (and there is no need for server side code execution), you could just mirror the rails-website using
wget --page-requisites --convert-links http://URL-to-Start
However, this will only download those files that are referenced from the entry URL, so you might need to run it on all sub-URLs individually.
Source: Download a working local copy of a webpage
Agree with Screenmutt. I've tried a couple of the ones mentioned but have had most success with:
http://middlemanapp.com/
Does pretty much everything you are asking for and let's you export to static HTML.
install:
gem install middleman
create project:
middleman init my_new_project (or even better with template --template=html5)
run in local server for live edits:
bundle exec middleman
dump static code:
bundle exec middleman build
Perhaps you can 'scrape' the HTML from the localhost serving it?
There seem to be some tools for downloading sites in general... You can probably limit them to download resources from localhost:3000 only.
http://www.httrack.com/
http://www.linuxjournal.com/content/downloading-entire-web-site-wget
UPDATE: Here's another tutorial that might help Use Rails 3.1 for Static Sites
This is not a common usage. You might be able to extract all the static pages by manually caching everything.
I would recommend taking a look at some alternatives.
I'm sorry that this isn't a good answer, but to be honest... You are using Rails for something that it was never intended to do. There are much better ways of making static sites.
Also, a static site is not an "app". :)
All you have to do is switch to Rails production mode locally so that assets are combined and minified. Then all you have to do is view source for the HTML, CSS, and JS. This should only take a few seconds.
So the steps are
config.assets.compress = true in development.rb
view the app locally
view source, copy and paste into an index.html file
click on compressed CSS and JS form source and save those relative to your index.html making sure they link correctly
You can use Wget (as it's already mentioned). I would go with:
wget --mirror --convert-links --adjust-extension --page-requisites --no-parent http://www.yourdomain.com
Yo can also use Httrack.
Be sure when you set Httrack you exclude all external websites with scripts so you don't download f.e. Google Analytics js files or Adsense or Facebook scripts. In Httrack, you exclude it in Preferences with:
-*.googlesyndication.com/* -*.facebook.net/* -*.google-analytics.com/*
After you are done you still need to rewrite all links because they will point at .../some-page/index.html You need .../some-page/. This solves Dynamic to Static Script.
You shouldn't serve them from rails or do anything that binds your static files to being served from rails. You may one day decide to serve your app from a CDN.
JS
One big tip would be to look at using AMD (async module definition), which would allow you to specify your JS file dependencies. Then you can use require.js and r.js(a tool that crawl and compile your dependencies in you precompile step). That would work for your JS.
CSS
For CSS, you could use sass or less. You'd include 1 file at the end of the day on your page, but the compilation process would involve merging your CSS files together. Once again this can be done at the pre-compile step.
CDN
There are gems out there that show take your assets and pass them over to something like S3, this answer and others like it would help: Is there a way to asset pipeline assets to s3 when pushing to heroku? ; however, that isn't necessary when you are first starting.
I did it with a Rake task that would fetch each of the Rails routes one at a time. It needed a bit of jiggery pokery to handle the fact that you might have conflicting routes - e.g. wget would fetch /objects as a file called "objects" but then when you want to fetch /objects/4 it would overwrite that file with a folder called "objects" with a nested file called "4". So I move each downloaded page to "index.html" inside a directory with the same name.
Here's my code, which I out in lib/tasks/export.rake:
def adjust_paths(path)
text = File.read(path)
new_contents = text.gsub(/("|\.\.\/)(assets|packs)\//, "\\1../\\2/")
new_contents = new_contents.gsub("http://localhost:3020", "")
File.write(path, new_contents)
end
namespace :static do
desc 'Generate static site in ./out/ directory'
task :export => [
'assets:clean',
'assets:precompile',
:start_rails_server
] do
begin
out_prefix = "dist"
paths = Rails.application.routes.routes.map do |route|
route.path.spec.to_s
end.uniq.reject { |p| p.starts_with?("/rails") || p == "/cable" || p == "/assets" }
paths = paths.map { |p| p.sub("(.:format)", "") }
paths.sort_by(&:length).each do |path|
if path.include?(":id")
# You'll have to use your own method for deciding which ids to use
ids = ["1", "2", "3", "4"]
else
ids = [""]
end
ids.each do |id|
id_path = path.sub(":id", id)
`wget -P #{out_prefix} -nH -p -k http://localhost:3020#{id_path}`
if id_path != "/"
file_path = "#{out_prefix}#{id_path}"
FileUtils.mv(file_path, "#{file_path}.tmp", force: true)
FileUtils.mkdir_p(file_path)
result = FileUtils.mv("#{file_path}.tmp", "#{file_path}/index.html", force: true)
puts "Moving #{id_path} to #{id_path}/index.html: #{result}"
# Will then need to relativise all of the asset paths, since we've moved it
adjust_paths("#{file_path}/index.html")
end
end
end
ensure
# stop the server when we're done
Rake::Task['static:stop_rails_server'].reenable
Rake::Task['static:stop_rails_server'].invoke
end
end
desc 'Start a Rails server in the static Rails.env on port 3020'
task :start_rails_server do
`RAILS_SERVE_STATIC_FILES=1,RAILS_ENV=static rails s -p 3020 -d`
end
desc 'Stop Rails server'
task :stop_rails_server do
`cat tmp/pids/server.pid | xargs -I {} kill {}`
end
end
Then you can just do bundle exec rake static:export

Dajaxice javascript core file not getting parsed

I've been looking everywhere for answer to my questions last few hours and couldn't find anything, so i decided to ask.
I followed installation instruction in docs of Dajaxice, got everything setup exacly the same, but unfortunetely my Dajax.core.js file is not getting parsed, so when i click on the javascript link in page html source it still contains template tags. I included the Dajaxice finder in staticfiles_finder(actually i ve got everything setup like in the ins instruction.
I am using django 1.4.1 develop server at the moment for testing and the latest Dajaxice version which is 0.9, is that make any difference ?
Does the order of vars in settings.py matters ?
What are the main reasons the Javascript files are not getting parsed, and actually when they should be parsed ?
Please help me as i really would love to use this app but just can't get it to work.
Thanks in advance.
I advice you to check STATICFILES_FINDERS settings and other settings related to django.contrib.staticfiles app. Dajaxice uses a hook in this app to generate dajaxice.core file.
When you use debug server this static file is generated on the fly, on production environment the file will be generated when you run collectstatic command.
In your case it looks like the dajaxice.core.js file is founded by another static finder or served in any other way.
To check this please run the following command
python manage.py findstatic dajaxice/dajaxice.core.js
The output should look like
Found 'dajaxice/dajaxice.core.js' here:
/tmp/tmp9nzeEd
The filename in tmp dir will be different
Also 2 pitfalls with collect static app:
When you update your ajax.py file to include new dajaxice views you have to run collectstatic again
The file is generated in /tmp/ folder. So if you use -l key to generate links instead of copying files make sure that you will not remove this file by accident.

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