How to run Ruby on Rails 3 with ruby 2.0 - ruby-on-rails

Is there an easy fix, how I could continue an old rails 3-0.20 installation under ruby 2.0?
The first error, caused by this line:
<%= stylesheet_link_tag :all %>
is
ActionView::Template::Error (no implicit conversion of nil into String):
An upgrade of the rails version would be the best, but unfortunately it is not possible in my case.

Hotfix the problem with the following line at the end in application.rb
ActionController::Base.config.relative_url_root = ''

I ran into the same issue. After drilling down into the stylesheet_link_tag method, I found that the issue comes from here
# actionpack-3.0.20/lib/action_view/helpers/asset_tag_helper.rb:749
if has_request && include_host && !source.start_with?(controller.config.relative_url_root)
The problem is String#starts_with?. In 1.9.3, that method will handle a nil as an input. 2.0.0 does not allow that.
ruby-1.9.3> 'whatever'.start_with? nil
=> false
ruby-2.0.0> 'whatever'.start_with? nil
TypeError: no implicit conversion of nil into String
It's probably also true that later versions of Rails set the value to '' if it's not set to prevent this issue. The hotfix mentioned above does fix the issue, but the root cause is differences between 1.9.3 and 2.0.0.

Related

Rails 5: Error when removed quiet_assets_path from development.rb

I have been trying to upgrade my app from Rails 4 to Rails 5. In my Rails 4 version I have quiet_assets_path set but in Rails 5 it is not required. But when I removed that tried to start the server I am getting the following error,
> ruby-2.2.2/gems/rack-mini-profiler-0.10.2/lib/mini_profiler_rails/railtie.rb:93:in
> `>': comparison of Fixnum with nil failed (ArgumentError) from
> /Users/Admin/.rvm/gems/ruby-2.2.2/gems/rack-mini-profiler-0.10.2/lib/mini_profiler_rails/railtie.rb:93:in
> `block in <class:Railtie>'
Can someone help me with this?
Edit:
Following is my rack_profiler.rb,
if Rails.env.development? || Rails.env.production?
require 'rack-mini-profiler'
# initialization is skipped so trigger it
Rack::MiniProfilerRails.initialize!(Rails.application)
Rack::MiniProfiler.config.skip_schema_queries = true
Rack::MiniProfiler.config.skip_paths += %w(/admin/sidekiq)
Rails.application.middleware.delete(Rack::MiniProfiler)
Rails.application.middleware.insert_after(Rack::Deflater, Rack::MiniProfiler)
end
When I comment the delete line then server is starting but if the line uncommented then the server breaks.
thanks for the update. First of all, do you use Rack::Deflater middleware in development environment too?
I think this issue might help you. It basically says that in Rails all delete middleware operations are issued at the end. You can use the swap method as described in the above issue.
If you search the repo issues for "Deflater" you'll find a lot of results, but I believe the above contains your fix.

"no implicit conversion of nil into String"in the Search Module of Redmine

On the redmine of my company, there is this bug where I get an internal error if I want to search into a project.
Here is the log corresponding to the error:
Processing by SearchController#index as HTML
Parameters: {"utf8"=>"✓", "issues"=>"1", "q"=>"test", "id"=>"sprint"}
Current user: me (id=60)
Completed 500 Internal Server Error in 85.0ms
TypeError (no implicit conversion of nil into String):
lib/plugins/acts_as_searchable/lib/acts_as_searchable.rb:126:in `search'
app/controllers/search_controller.rb:74:in `block in index'
app/controllers/search_controller.rb:73:in `each'
app/controllers/search_controller.rb:73:in `index'
The lines corresponding to the error in the controller are :
if !#tokens.empty?
# no more than 5 tokens to search for
#tokens.slice! 5..-1 if #tokens.size > 5
#results = []
#results_by_type = Hash.new {|h,k| h[k] = 0}
limit = 10
#scope.each do |s|
r, c = s.singularize.camelcase.constantize.search(#tokens, projects_to_search,
:all_words => #all_words,
:titles_only => #titles_only,
:limit => (limit+1),
:offset => offset,
:before => params[:previous].nil?)
#results += r
Here is my config :
Environment:
Redmine version 2.6.9.stable
Ruby version 2.3.0-p0 (2015-12-25) [x86_64-linux]
Rails version 3.2.22
Environment production
Database adapter PostgreSQL
SCM:
Git 1.9.1
Filesystem
Redmine plugins:
no plugin installed
What is interesting is that when I search only one letter, i'm redirected on the search page, but I don't have an internal error.
I'm very new to Redmine developpement and to Ruby, I was just assigned to try to fix this bug. Do any of you have an idea of how to fix it ?
Thanks.
I had the same issue, I was able to fix it by downgrading my ruby & rails version, a working set is :
Rails 3.2.19
Ruby 2.1.4p265
It's look like it's due to a braking change in ruby-2.3.0.
It's really odd. We are using 'Redmine' -2.0.3.1 and we do not have that kind of behaviour.
It seems that "someone" messed up the form linked to the search input. Try to follow that data from when you press enter until it answer you with the 500 error code.
If you can , change the environment to development, this way it will show you more detailed errors.
But I can't help you much more , you didn't provide enough info about the problem.

Rails 4.2 syntax error, unexpected ':', expecting =>

I have two computers that I mainly use to develop my Rails application. While working on Computer 1, I added some bootstrap elements to some inputs. For example:
= f.select :transport_from_state, options_for_select(state_populator, #invoice_ambulance.transport_from_state), { include_blank: true}, { class: 'chosen-select', 'data-placeholder': 'State' }
I added the 'data-placeholder': 'State' and used the 'newer' syntax instead of the old :data-placeholder' => 'State' which works fine. The page works with no errors on Computer 1.
I pulled down on computer 2, and now I am getting an error for every instance of 'data-placeholder'. Here is my error:
syntax error, unexpected ':', expecting =>
...en-select', 'data-placeholder': 'State' }
I can replace it with the old syntax and it works fine. However, I shouldn't have to switch 100 instances of this to a deprecated syntax. I have since bundle installed, bundle updated, and rebuilt the db with no luck.
Computer 1 (works)
ruby 2.2.0p0
Rails 4.2.0
Computer 2 (doesnt work)
ruby 2.2.0preview1
Rails 4.2.0
You need to upgrade Computer 2 to the real Ruby 2.2.0 rather than this beta-ish "preview" version you have. Using quoted symbols with the JavaScript-style trailing colon syntax:
{ 'some string': value }
wasn't valid before Ruby 2.2, the 2.2.0preview1 version you have on Computer 2 apparently doesn't support it.
BTW, there is no old and new syntax, there is an alternate JavaScript-style notation that can be use when the keys in a Hash-literal are some symbols. Whoever told you that the hashrocket is deprecated is, at best, confused.
The "newer" syntax is only for symbols.
{hello: 'world'} is equivalent to {:hello => 'world'} but if your key is a string then you still have to use the "hash rocket" syntax: {'hello' => 'world'}
http://ruby-doc.org/core-2.2.0/Hash.html

iconv deprecation warning with ruby 1.9.3

I'm getting this warning when I run rspec:
/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require': iconv will be deprecated in the future, use String#encode instead.
I get the same warning with rails 3.1.0, 3.1.1, 3.1.2.rc2 versions. Seems it's related to sqlite3 gem, but I'm not sure. There are no warnings with ruby 1.9.2
Any suggestions how to deal with it?
You are getting this deprecation notice cause a library somewhere is requiring iconv.
iconv is a gem created by Matz that can be used to convert strings from one format to another.
For example this is often used:
Iconv.iconv('UTF-8//IGNORE', 'UTF-8', content) this little bit of magic takes a UTF-8 string that may have invalid chars and converts it to a proper UTF-8 string.
It has been decided that in Ruby 1.9.3 we should not be using iconv any more and instead use the built-in String#encode. encode is more powerful and allows you more flexibility.
The theory is that the above example could be replaced with:
string.encode("UTF-8", :invalid => :replace, :undef => :replace, :replace => "?")
In practice it seems this is imperfect.
This also leads to a less than easy story for gem creators who wish to support 1.8:
content = RUBY_VERSION.to_f < 1.9 ?
Iconv.iconv('UTF-8//IGNORE', 'UTF-8', "content") :
"#{content}".encode(Encoding::UTF_8, :invalid => :replace, :undef => :replace, :replace => '')
So, you have a gem somewhere that is requiring iconv, to find it:
Assuming your error message is: /gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240
Open up /gems/activesupport-3.1.0/lib/active_support/dependencies.rb on line 240:
Add the line:
p caller if file =~ /iconv/
(just after: load_dependency(file) { result = super })
You will get a big fat stack trace:
rake --tasks
/home/sam/.rvm/gems/ruby-1.9.3-p125/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `block in require': iconv will be deprecated in the future, use String#encode instead.
["/home/sam/.rvm/gems/ruby-1.9.3-p125/gems/calais-0.0.13/lib/calais.rb:5:in `'",
.. more omitted ..
This tells me it is the calais gem. Looking through pull requests, I am not the first. The pull has not been yanked in.
Depending on the gem, there may be an upgraded version that does not have this error, so I would recommend you upgrade your gems first. If you are unlucky you may be stuck with the unfortunate task of forking a gem to get rid of this (if for example your pull request to fix it languishes)
If you're seeing this, it's very probably not Rails. If you look at the method surrounding the line being referred to in the error you posted, you'll see the following:
def require(file, *)
result = false
load_dependency(file) { result = super }
result
end
I'm not saying it's your code, necessarily, but I'm certain that it's not actually the line in question where iconv is being called. In my case, I found that my project's code actually contained a reference to iconv.
If you want to check your code for such a reference, try grep -ir iconv ./ in your project directory.
When iconv is actually in a library it can be harder to find. By temporarily changing the above method to:
def require(file, *)
result = false
puts
puts caller.reverse
load_dependency(file) { result = super }
result
end
You can then easily run your code and grep out the relevant lines of the backtrace to find the root cause of the warning.
ruby your/code.rb 2>&1 | grep -B 5 iconv
Add this to the start of your program:
oldverb = $VERBOSE; $VERBOSE = nil
require 'iconv'
$VERBOSE = oldverb
and curse the people who think this is a professional way to handle deprecation.
You can pin down the exact location of the warning by generating exceptions for ActiveSupport::Deprecation, instead of just printing to the log. At the top of application.rb:
ActiveSupport::Deprecation.behavior = Proc.new do |message, backtrace|
raise message
end
Once you've figured out where the warning is coming from (by inspecting the full backtrace), remove this again.
To remove this warning...
go to your .rvm directory and find iconv.c (mine was at ~/.rvm/src/ruby-1.9.3-p125/ext/iconv/iconv.c)
edit that file are remove or comment out the call to warn_deprecated() (should be near the bottom)
from that file's directory, run ruby extconf.rb
then make
then make install
Should do the trick

Rails + Ruby 1.9 "invalid byte squence in US-ASCII"

After upgrading to ruby 1.9 we began to notice pages failing to render from the rails template renderer when a user used a non-ASCII character. Specifically "é". I was able to resolve this issue on one of our staging servers, but I have not been able to reproduce the fix on our production server.
The fix that seemed to work the first time:
Converted the database from latin1 to utf8 using the convert_charset tool available here: http://www.mysqlperformanceblog.com/2009/03/17/converting-character-sets/. (including setting default_character_set=utf8 in my.cnf and running SET GLOBAL character_set_server=utf8
Switched to the sam-mysql-ruby adapter (instead of the standard mysql adapter: http://gemcutter.org/gems/sam-mysql-ruby)
Restarted rails
The error is:
"invalid byte sequence in US-ASCII"
Oddly, after following the steps above the error has not changed on our production server. Setting encoding: utf8 in database.yml does not change the error either.
The error raised on the following line of code:
<%= link_to h(question.title), question_path(question) %>
This blog seems to suggest a fix, but it mentions that this should not be a problem in 1.9: http://www.igvita.com/2007/04/11/secure-utf-8-input-in-rails/ (and it's over 2 years old).
I imagine this problem might soon affect a lot of people as more rails developers people switch to 1.9.
I found the solution:
The problem is:
Fetching data from any database (Mysql, Postgresql, Sqlite2 & 3), all configured to have UTF-8 as it's character set, returns the data with ASCII-8BIT in ruby 1.9.1 and rails 2.3.2.1.
(Taken from: https://rails.lighthouseapp.com/projects/8994/tickets/2476)
My attempt to use the patched mysql adapter likely failed because my database was not configured to natively use utf8, so the patched adapter failed to work properly.
The fix ended up being to use the patch file available here: http://gnuu.org/2009/11/06/ruby19-rails-mysql-utf8/
require 'mysql'
class Mysql::Result
def encode(value, encoding = "utf-8")
String === value ? value.force_encoding(encoding) : value
end
def each_utf8(&block)
each_orig do |row|
yield row.map {|col| encode(col) }
end
end
alias each_orig each
alias each each_utf8
def each_hash_utf8(&block)
each_hash_orig do |row|
row.each {|k, v| row[k] = encode(v) }
yield(row)
end
end
alias each_hash_orig each_hash
alias each_hash each_hash_utf8
end
(Placed in lib/mysql_utf8fix.rb and required in enviornment.rb using require 'lib/mysql_utf8fix.rb')
it is only require 'mysql_utf8fix.rb' (rails 2.3.11)
Please user mysql2(gem) adapter instead of mysql adapter in database.yml
and remove the mysql patches(If exists) and add the following lines in environment.rb.
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8
Then run in apache and passenger it ll work fine
Thanks,
Ramanavel Selvaraju.

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