Trying to use the heroku gem to clone a project and do local modifications I got the following error:
git: fatal error: `chdir' failed: permission denied.
It turns out that in Mandriva, when using:
sudo urpmi git
what gets installed is the ‘GNU Interactive Tools’ that has nothing to do with the git version control system.
So make sure you first uninstall the git installed:
sudo rpm -e git
and then install the Git – Fast version control system, by doing:
sudo urpmi git-core
You should then be able to clone a heroku application:
heroku clone myapp
Trying to use ExtJS with RubyOnRails on Heroku, gives the following error and a blank page in Firebug.
Ext.ux.grid has no properties
In Heroku, you will probably have to manually upload the files from the ExtJS library, as well as the ext_scaffold plugin.
The files are:
You want to convert some legacy tables created in Paradox (.db, .px) to another format so you can use it in MySQL.
Download the px tools from here.
Follow the instructions, in the INSTALL file after you untar the file.
You should have to do the usual three step linux installation:
sudo make install
Afterwards to make sure that the .db file is a paradox file run:
pxinfo -f path/to/paradox/db/file.db
The program should read the header and report back with something along the lines:
File-Version: Paradox 7.x
Filetype: indexed .DB
To export each Paradox db file to an sql statement run the following:
pxsqldump -d mysql -f path/to/paradox/file.db > path/to/mysql/exported/file.sql
After upgrading to Rails 2.0.2 when trying to install the sqlite3-ruby gem got the following error:
ERROR: Error installing sqlite3-ruby:
ERROR: Failed to build gem native extension.
/usr/bin/ruby extconf.rb install sqlite3-ruby
checking for sqlite3.h... no
make: *** No rule to make target `ruby.h', needed by `sqlite3_api_wrap.o'. Stop.
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/ext/sqlite3_api/gem_make.out
In Mandriva you need to install the ruby-sqlite3 and the development libraries first, like:
sudo urpmi ruby-sqlite3
sudo urpmi libsqlite3-devel
After that you should be able to install the gem as normal.
Upgrading from Rails version 1.2.3 to version 2.0.2.
Following the suggestion in DH’s weblog here when using sudo gem install rails -y, it gets the trunk version of rails which at the time was 220.127.116.1116.
This causes a few problems and breaks a few more things.
In order to get back to the latest stable version, you have to uninstall a few of the gems installed from the trunk version.
If you have installed the latest version of top of an existing one using gems, then doing:
gem list --local
will give you all the installed versions of the gems. Something like:
actionmailer (18.104.22.16816, 2.0.2, 1.3.3)
actionpack(22.214.171.12416, 2.0.2, 1.3.3)
rails(126.96.36.19916, 2.0.2, 1.2.3)
Make sure you uninstall all the gems with version number 188.8.131.5216:
sudo gem uninstall rails
sudo gem uninstall actionmailer
sudo gem uninstall actionpack
sudo gem uninstall activerecord
sudo gem uninstall activeresource
sudo gem uninstall activesupport
sudo gem uninstall rails
In each of the above commands the gem package manager should ask you to select the one you want to uninstall.
Pick the one with the 184.108.40.20616 (or other version later than 2.0.2).
At the end if you list the gems again you should only have gems going up to version 2.0.2
An extra step I had to take for making the migrations work was to install rake again:
sudo gem install rake
After all these my installation seems to be working fine again.