Netzke on RAILS 3.1 - ruby-on-rails-3.1

I am newbe here about Netzke..
I am trying to follow the installation process in the Netzke web
site http://www.netzke.org and also from the git Netzke-core site..
I just download the EXT JS 4.0.2 zip file from Sencha, extract it and try to symbolic link the ext JS code to <railsdir>public/extjs directory..
and with the rails 3.1, I try also to link it to <railsdir>/app/assets/
javascripts and also <railsdir>/app/assets/stylesheets..
But it still does not work, because it doesn't find the file /extjs/resources/css/ext-all.css..
Please can you help which path or directory to link the EXT JS code to?
Linking the /code/sencha/EXT-4.0.2a to public/extjs
, that what I have done, but no success..

set config.assets.debug = false in environment/development.rb file
it will work with Netzke

I'm just newbie for Netzke too. I think your problem with model_name method is that you Use GridPanel without a config model to it. You should do something like this:
<% netzke :some_component, :class_name => "Netzke::Basepack::GridPanel", :model => "YourModel" %>
It should work :)

Related

Moving blog articles location in Middleman

I'm using the Middleman Blog gem for my site, but by default it appears the blog articles need to be located in /source which isn't particularly nice when looking at the tree in vim and trying to locate one of the other files in there (a template for instance).
From looking at the documentation I can't see if there is any way of moving the blog articles so they are stored somewhere else such as a blog_articles folder or similar.
Is this possible?
Put the following in your config.rb file.
activate :blog do |blog|
blog.permalink = ":year-:month-:day-:title.html"
blog.sources = "blog_articles/:title.html"
end
Assuming you have a post 2012-01-01-example-article.html.markdown stored in the folder source/blog_articles.
You should now see the post with this URL: http://localhost:4567/2012-01-01-example-article.html. (You might have to restart middleman when changing the config.rb file.)
Please note that I also had to set blog.permalink, the blog.sources setting alone didn't do the trick.
A bonus tip: I have activate :directory_indexes in my config.rb file. This setting gives you nice looking URLs, without the .html part.
If you want the same for your blog posts you can drop the .html from your blog.permalinksetting. Like so:
activate :blog do |blog|
blog.permalink = ":year-:month-:day-:title"
blog.sources = "blog_articles/:title.html"
end
Now you can see your post with this URL: http://localhost:4567/2012-01-01-example-article.
I messed with the middleman-blog extension, but gave up for its relative opaqueness. In looking at the source, though, it appears the prefix option might do the trick for you? It's somewhat unclear whether the prefix is a URL prefix or a local path prefix:
activate :blog do |blog|
blog.prefix = "/blog_articles"
end
From looking at the code it transpires there is a :sources option which you can use. If you poke around in the source there is an example of this:
https://github.com/middleman/middleman-blog/tree/master/fixtures/article-dirs-app
The solution above worked for me when I made the following changes to the permalink / source config options:
blog.permalink = ":title.html"
blog.sources = "posts/:year-:month-:day-:title.html"
The permalink is the location which it will appear in the web browser url where the source is the locations of the posts.
Using middleman 3.2.1
I made blog folder inside source directory. Then i make posts directory and moved all my posts there. source/blog/posts/...
and then inside config.rb
activate :blog do |blog|
..........
blog.permalink = "blog/:year/:month/:day/:title.html"
blog.sources = "blog/posts/:year-:month-:day-:title.html"
.........
end

Requiring a file in ROR

I have a controller which wish to include a file in another folder, how do I do that? I am using Ruby 1.9.2 and Rails 3.2.6. Thanks
Controller file is in
/project/app/controllers/examples_controller.rb
and the required file is in
/project/example_folder/example.rb
require File.join(Rails.root, "example_folder", "example")
assuming /projects/ is your rails application root folder
You can auto load custom directories with classes and modules you want to be.
So you can Edit config/application.rb
# Custom directories with classes and modules you want to be autoloadable.
config.autoload_paths += %W(#{config.root}/example_folder)
It would be something like this:
require "#{Rails.root}/example_folder/example.rb"
just before the declaration of your controller.
according to here
more info here Why does Ruby 1.9.2 remove "." from LOAD_PATH, and what's the alternative?
requie_relative '../../example_folder/example.rb'

no route matches for assets/images in Rails

Working on rails, images are not visible and giving error.
Started GET "/assets/home.png" for 127.0.0.1 at 2012-06-19 12:23:24 +0530
Served asset /home.png - 404 Not Found (24ms)
ActionController::RoutingError (No route matches [GET] "/assets/home.png"):
I have used command
rake assets:precompile
production.rb
config.assets.compress = true
config.assets.compile = false
application.rb
config.assets.enabled = true
config.assets.version = '1.0'
Thanks for any help!
Actually you cannot reference your image with /assets/home.png path.
It will work in development mode, but in production all of your assets have a fingerprint in their filename (read this http://guides.rubyonrails.org/asset_pipeline.html#what-is-fingerprinting-and-why-should-i-care-questionmark)
That's why, in assets-pipeline enabled applications you need to reference all of your assets using helper methods. Read this doc to learn about the different helpers available in Ruby, JS and Sass files: http://guides.rubyonrails.org/asset_pipeline.html#coding-links-to-assets
The lack of a fingerprint in the file request suggests that you are running this in development. I am also going to guess that this is an app upgraded from an older version of Rails.
Any images need to be in the folder /assets/images for the pipeline to work.
Also, you do not need to precompile when in development mode.
Delete the public/assets folder, delete the folder tmp/cache/assets, and restart your server.
If this images are in the correct location, it should work.

Broken precompiled assets in Rails 3.1 when deploying to a sub-URI

I'm in the process of updating a Rails 3 app to use Rails 3.1 and as part of that, am making use of the new asset pipeline. So far, I've got everything working apart from one rather annoying problem I can't solve.
The application and all its assets works fine in development, but in production it is deployed to a sub-URI using Passenger (http://the-host/sub-uri/). The problem with this is that the assets are pre-compiled during deployment and one of my CSS (well, it's a .css.scss file) files is making use of the image-url helper from the sass-rails gem. Since during the pre-compilation process, the paths are hard-coded into the precompiled CSS file, the sub-uri is not taken account of:
In my .css.scss file:
body { background-image: image-url("bg.png"); }
The result in the compiled application-<md5-hash-here>.css file:
body { background-image: url(/assets/bg.png); }
What it should be to make it work correctly:
body { background-image: url(/sub-uri/assets/bg.png); }
Is this scenario just asking too much? If so, I'll have to switch back to the old non-asset-pipelined way and just serve my images and CSS from public. However it seems like something which should have been thought about and solved...? Am I missing the solution?
Edit 1: I should note that using the erb solution instead yields the same result, as one would expect.
Edit 2: in response to Benoit Garret's comment
No, the problem isn't related to the config.assets.prefix. I tried setting that (to /sub-uri/assets rather than the default of /assets) but it turned out that was the wrong thing to do - it seems like this setting is already in relation to the root of the Rails app, not the server. Removing that (and thus returning to the default) has fixed all the weird issues that caused (and there were many, all the assets ended up in /sub-uri/sub-uri/assets - it was all very strange). The only problem is that the image-url helper and friends do not pick up the sub-URI when they are pre-compiled. Needless to say, this is logical since when it is pre-compiled, it couldn't possibly know that when it's running under Passenger, it'll be configured in this way. My question is how to inform it of this and thus end up with the correct paths in the precompiled result. If indeed it can be done.
My current workaround is to reference the iamge in the CSS like this: url(../images/bg.png) and place it in the non-pipelined public/images location. Hardly ideal since it doesn't benefit from the fingerprinting and everything which the pipeline provides.
Finally I've worked out a couple of workarounds/solutions.
1) From https://github.com/rails/sass-rails/issues/17 it looks like this could get fixed in sass-rails. I've monkey-patched helpers.rb myself along the lines of the proposed patch in the link above. I simply set the required environment variable in the asset precompile line in deploy.rb.
I do all my monkey patching in a single file config/initializers/gem_patches.rb. In this file I patched this method as:
module Sass
module Rails
module Helpers
protected
def public_path(asset, kind)
path = options[:custom][:resolver].public_path(asset, kind.pluralize)
path = ENV['PRODUCTION_URI'] + path if ENV['PRODUCTION_URI']
path
end
end
end
end
2) Alternatively if you are ok to embed images in the CSS, changing the stylesheet to have a .erb extension, and replacing the image-url("bg.png") with url(<%= asset_data_uri "bg.png" %>) will work without any need to change sass-rails. asset-data-uri doesn't exist as a pure Sass function so you have to use the Rails helper asset_data_uri.
In the latest Rails 3.1.3 you need to monkey patch a different module now, for it to work
This is what I did
module Sprockets
module Helpers
module RailsHelper
def asset_path(source, options = {})
source = source.logical_path if source.respond_to?(:logical_path)
path = asset_paths.compute_public_path(source, asset_prefix, options.merge(:body => true))
path = options[:body] ? "#{path}?body=1" : path
if !asset_paths.send(:has_request?)
path = ENV['RAILS_RELATIVE_URL_ROOT'] + path if ENV['RAILS_RELATIVE_URL_ROOT']
end
path
end
end
end
end
And in my deploy.rb I have:
desc "precompile the assets"
namespace :assets do
task :precompile_assets do
run "cd #{release_path} && rm -rf public/assets/* && RAILS_ENV=production bundle exec rake assets:precompile RAILS_RELATIVE_URL_ROOT='/my_sub_uri'"
end
end
before "deploy:symlink", "assets:precompile_assets"
I'm using Rails 3.1.3 and deploying to a sub-URI successfully.
I have NOT monkey-patched anything.
The key problems with this setup have been better discussed here. As you can see, the solution was applied to Rails 3.2 and never backPorted to 3.1.4.
But, I have came to a solution using Rails 3.1.3 that works for my setup.
Try this: (I'm no expert, just trying to contribute to solve a problem that hassled me for hours...)
environment.rb:
#at top:
ENV['RAILS_RELATIVE_URL_ROOT'] = '/rais'
production.rb:
config.assets.prefix = ENV['RAILS_RELATIVE_URL_ROOT'] ? ENV['RAILS_RELATIVE_URL_ROOT'] + '/assets' : '/assets'
routes.rb:
Rais::Application.routes.draw do
scope ENV['RAILS_RELATIVE_URL_ROOT'] || '/' do #see config/environment.rb
<<resources here>>
end
end
As you can see, I've put assets.prefix inside production.rb, not in application.rb
After that you do:
rake assets:clear
rake assets:precompile
and than, test with the console:
RAILS_ENV=production rails console
Results:
foo = ActionView::Base.new
foo.stylesheet_link_tag 'application'
=> "<link href=\"/rais/assets/layout.css?body=1\" media=\"screen\" rel=\"stylesheet\" type=\"text/css\" />\n<link href=\"/rais/assets/application.css?body=1\" media=\"screen\" rel=\"stylesheet\" type=\"text/css\" />"
foo.image_tag('arrow-up.png')
=> "<img alt=\"Arrow-up\" src=\"/rais/assets/arrow-up-ca314ad9b991768ad2b9dcbeeb8760de.png\" />"
After a bit of digging around, I have found the issue. The issue is in Rails, specifically Sprockets::Helpers::RailsHelper::AssetPaths#compute_public_path. Sprockets::Helpers::RailsHelper::AssetPaths inherits from ActionView::AssetPaths and overrides a number of methods. When compute_public_path is called through the Sass::Rails::Resolver#public_path method is sass-rails, the rails sprocket helper picks up the task of resolving the asset. Sprockets::Helpers::RailsHelper::AssetPaths#compute_public_path defers to super which is ActionView::AssetPaths#compute_public_path. In this method there is a condition of has_request? on rewrite_relative_url_root as seen below:
def compute_public_path(source, dir, ext = nil, include_host = true, protocol = nil)
...
source = rewrite_relative_url_root(source, relative_url_root) if has_request?
...
end
def relative_url_root
config = controller.config if controller.respond_to?(:config)
config ||= config.action_controller if config.action_controller.present?
config ||= config
config.relative_url_root
end
If you look at the internals of rewrite_relative_url_root it relies on a request to be present and the ability to derive it from the controller variable in order to resolve the relative url root. The issue is that when sprockets resolves these assets for sass it does not have a controller present and therefore no request.
The solution above didn't work in development mode for me. Here is the solution that I am using to make it work for now:
module Sass
module Rails
module Helpers
protected
def public_path(asset, kind)
resolver = options[:custom][:resolver]
asset_paths = resolver.context.asset_paths
path = resolver.public_path(asset, kind.pluralize)
if !asset_paths.send(:has_request?) && ENV['RAILS_RELATIVE_URL_ROOT']
path = ENV['RAILS_RELATIVE_URL_ROOT'] + path
end
path
end
end
end
end

How to install 'Ckeditor' for 'Active Admin' with 'Rails 3.1'

I looking for how to install Ckeditor for Active_Admin
I already installed Ckeditor and I have put this line in my 'initializers/active_admin.rb' file.
# To load a javascript file:
config.register_javascript
'ckeditor/config.js'
And the line
config.autoload_paths += %W(#{config.root}/app/models/ckeditor)
in my 'config/application.rb'
In the begining the 'config.js' file wasn't loaded because when I install Ckeditor gem it creates a folder named Ckeditor in public/javascripts but with rails 3.1, I had to move this folder into assets/javascripts...
That's what I've done.
Now the file "config.js' is loaded.
But now I don't know what I have to do next
Rails 3.2
activeadmin-0.4.3
in 'initializers/active_admin.rb' file.
config.register_javascript 'ckeditor/ckeditor.js'
config.register_javascript 'ckeditor/init.js'
in form
= f.cktext_area :text
If your're using the assets pipeline with external host server you have to hack a little bit.
Your assets/javascripts/active_admin.js should look like this:
//= require active_admin/base
//= require_self
//= require ckeditor/ckeditor
//= require ckeditor/init
var CKEDITOR_BASEPATH = 'http://assets.yourdomain.com/assets/ckeditor/';
Then you're good to go.
Add
var CKEDITOR_BASEPATH = '/assets/ckeditor/';
to the start of your ckeditor.js file.
I believe you are having an issue with the new location of the files in rails 3.1. Make sure all your ckeditor files are located in the javascript/ckeditor folder (or modify the link accordingly).
See http://docs.cksource.com/CKEditor_3.x/Developers_Guide/Specifying_the_Editor_Path
You can also use in your forms
f.input :name, :as => :ckeditor
There is a page in the oficial wiki for this task.

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