High Tech Sorcery

I ran into some problems upgrading devise from 1.0.x to 1.3.x.

• to use passwords besides bcrypt you have to made 2 changes:
  • in config/initializers/devise.rb
    • config.encryptor = :sha1 (for devise 1.0.x compatibility)
  • in User model (or whatever model calls devise)
    • call devise with both :database_authenticatable and :encryptable
  • you can tell you have issues with this if you see errors like BCrypt::Errors::InvalidHash or “invalid hash”
• browser validation prevents sign in with something other than email
  • I create app/views/devise/sessions/new.html.erb from the devise version and changed email_field to text_field
  • Can’t log in with “username” (some hidden JS blocking) – Devise | Google Groups

Trying to figure out how easy it is to use ruby to write a desktop application.  It would be nice to have something cross-platform.  At the moment I’m playing with qt4, gtk2, and wxwidgets.

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I can’t find any information about this, partially due to the badly named noscript extension, but it appears that firefox will load an image in a noscript block even when javascript is enabled.  This is troubling for my use because I’ve put a static google map on an app for those that do not have javascript and wrapped it in a noscript to avoid loading it when it’s not needed.  Now javascript users have to download the map twice, once static, once dynamic.  Definitely a waste. Maybe this is fixed in firefox 4.

These are some numbers for the cpu/mb/ram/video assuming all else will be equal.  The AMD Phenom II X4 945 is available again.  It’s a great CPU that allows for ECC RAM, if one is willing to spend 2x as much for ECC RAM these days.  Intel Sandy Bridge system will be much quicker, though I am considering waiting for Z68 motherboards to become available as that is only a month or so away.

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Just walking through some bug fixing.

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Just some notes.  Of course one could use both.

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Lots’ of work moving to unobtrusive mapping using googe maps and jquery, storing location data as hcard microformat.

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My phone is experiencing a lot of problems, most noticeably that call quality has been abysmal.  So I’m looking at new phones and perhaps a new carrier / plan.

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I speculated earlier that I might buy a sandy bridge CPU and motherboard and that it would represent a break from 16 years of buying AMD.  I have always bought at the low end of price where AMD has always offered superior competition.  But I am not blind to how well sandy bridge systems perform and I am looking for more performance from my next system.  I was strongly considering buying the i5-2500K and an H67 chipset motherboard.  But today I learned about yet another limitation to this configuration (above the 2500K not supporting VT-d and TXT, though I’m sure no TXT is actually a loss) and that is that you cannot overclock it.  So as usual Intel has a lineup which is complicated to make a choice because of all the various options in play.  I much prefer AMD’s simple setup: all features on every chip and you just pick the speed and cache.  Not to mention that I’d really prefer to buy ECC RAM which you can do on a consumer AMD motherboard but not on any consumer Intel board.

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I ran into a merge conflict when a branch had changed a file and I was merging in another branch where the file had been deleted and placed in gitignore.   Some suggestions on handling this here:

• fetch – Force git to overwrite local files on pull. – Stack Overflow

I used:

• git checkout <your-branch> -f

I then need to “git rm” the file in the branch where it had been modified.  I’m not sure what exactly happened to the file since I didn’t care much about it.