Just a quick post on how to browse folders as root in Ubuntu. Simply enter the following:
chris@chris-VirtualBox:/etc$ sudo nautilus
Once you’re in there you can view hidden files by pressing Ctrl+H.
If, like me, you’re coming from a Windows background – this may make things a little easier. Leave a comment below if you have any more useful tips!
Just an error I ran into while running bundle install on a new ubuntu virtual:
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb
checking for sqlite3.h... no
sqlite3.h is missing. Try 'port install sqlite3 +universal'
or 'yum install sqlite-devel' and check your shared library search path (the
location where your sqlite3 shared library is located).
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/ruby1.8
--with-sqlite3-dir
--without-sqlite3-dir
--with-sqlite3-include
--without-sqlite3-include=${sqlite3-dir}/include
--with-sqlite3-lib
--without-sqlite3-lib=${sqlite3-dir}/lib
--enable-local
--disable-local
To fix it, simply run the following:
sudo apt-get install libsqlite3-dev
Ran into the following issue today starting a new app on a virtual Ubuntu box:
Could not find a JavaScript runtime
Thankfully there’s a quick fix, simply install nodejs:
chris@chris-VirtualBox:~/Desktop$ sudo apt-get install nodejs Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: postgresql-client-8.4 postgresql-8.4 Use 'apt-get autoremove' to remove them. The following extra packages will be installed: libc-ares2 libev4 libv8-3.1.8.22 The following NEW packages will be installed: libc-ares2 libev4 libv8-3.1.8.22 nodejs 0 upgraded, 4 newly installed, 0 to remove and 77 not upgraded. Need to get 1,938 kB of archives. After this operation, 6,066 kB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe libv8-3.1.8.22 i386 3.1.8.22-1ubuntu2 [1,386 kB] Get:2 http://au.archive.ubuntu.com/ubuntu/ oneiric/main libc-ares2 i386 1.7.4-1 [37.3 kB] Get:3 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe libev4 i386 1:4.04-1 [29.5 kB] Get:4 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe nodejs i386 0.4.9-1ubuntu3 [486 kB] Fetched 1,938 kB in 18s (106 kB/s) Selecting previously deselected package libv8-3.1.8.22. (Reading database ... 158699 files and directories currently installed.) Unpacking libv8-3.1.8.22 (from .../libv8-3.1.8.22_3.1.8.22-1ubuntu2_i386.deb) ... Selecting previously deselected package libc-ares2. Unpacking libc-ares2 (from .../libc-ares2_1.7.4-1_i386.deb) ... Selecting previously deselected package libev4. Unpacking libev4 (from .../libev4_1%3a4.04-1_i386.deb) ... Selecting previously deselected package nodejs. Unpacking nodejs (from .../nodejs_0.4.9-1ubuntu3_i386.deb) ... Processing triggers for doc-base ... Processing 1 added doc-base file... Registering documents with scrollkeeper... Processing triggers for man-db ... Setting up libv8-3.1.8.22 (3.1.8.22-1ubuntu2) ... Setting up libc-ares2 (1.7.4-1) ... Setting up libev4 (1:4.04-1) ... Setting up nodejs (0.4.9-1ubuntu3) ... update-alternatives: using /usr/bin/node to provide /usr/bin/js (js) in auto mode. Processing triggers for libc-bin ... ldconfig deferred processing now taking place chris@chris-VirtualBox:~/Desktop$
Let me know if you have any issues.
I ran into the following error while trying to implement ReCaptcha with devise:
undefined method `render_with_scope' for #
The offending code:
class Users::RegistrationsController < Devise::RegistrationsController
def create
#Verify captcha
if verify_recaptcha
super
else
build_resource
clean_up_passwords(resource)
flash.now[:alert] = "There was an error with the recaptcha code below. Please re-enter the code."
render_with_scope :new
end
end
end
This error was caused by the fact that I’d followed an out of date tutorial. Devise no longer uses render_with_scope. Thankfully the solution was pretty straight forward, simply switch render_with_scope with render:
class Users::RegistrationsController < Devise::RegistrationsController
def create
#Verify captcha
if verify_recaptcha
super
else
build_resource
clean_up_passwords(resource)
flash.now[:alert] = "There was an error with the recaptcha code below. Please re-enter the code."
render :new
end
end
end
There’s a brief explanation available at the following link: http://groups.google.com/group/plataformatec-devise/browse_thread/thread/596381554ba1fb04
What I Broke - Programming and Web Development 