03 Jul '12, 11am

unique indexをはらないとuniqueにならないだと!?

Database constraints and/or stored procedures make the validation mechanisms database-dependent and can make testing and maintenance more difficult. However, if your database is used by other applications, it may be a good idea to use some constraints at the database level. Additionally, database-level validations can safely handle some things (such as uniqueness in heavily-used tables) that can be difficult to implement otherwise. Client-side validations can be useful, but are generally unreliable if used alone. If they are implemented using JavaScript, they may be bypassed if JavaScript is turned off in the user’s browser. However, if combined with other techniques, client-side validation can be a convenient way to provide users with immediate feedback as they use your site. Controller-level validations can be tempting to use, but often become unwieldy and difficult to t...

Full article: http://guides.rubyonrails.org/active_record_validations_c...

Tweets

Watch this Nissan Leaf set a record up Goodwood... backwards

Watch this Nissan Leaf set a record up Goodwood...

green.autoblog.com 03 Jul '12, 12am

There's more than one way to set a record at the Goodwood Festival of Speed . Just ask Nissan . The automaker took to the ...

Netto Defends Anwar’s Record

Netto Defends Anwar’s Record

dinmerican.wordpress.com 01 Jul '12, 3pm

Netto Defends Anwar’s Record July 1, 2012 Netto Defends Anwar’s Record by Terence [email protected] COMMENT: Nobo...

MB&F HM4 Piece Unique for Marcus Watches

MB&F HM4 Piece Unique for Marcus Watches

luxuo.com 03 Jul '12, 10pm

The Marcus watch store in London is hosting a collection of specially commissioned and exceptional watches at its store in...

Marcus Anniversary “Unique Masterpieces” Exhibition: If you are in London between the 3rd of July and the 2nd of...

Marcus Anniversary “Unique Masterpieces” Exhibi...

fratellowatches.com 02 Jul '12, 9pm

If you are in London between the 3rd of July and the 2nd of October, make sure to pay 170 New Bond Street in London a visi...

Pinckney's record round earns Open spot

Pinckney's record round earns Open spot

golfweek.com 04 Jul '12, 12am

Scott Pinckney can look forward to his biggest tournament of the year after blitzing his way into the Open Championship at...

#Euro2012 final sparks new Twitter record

straitstimes.com 02 Jul '12, 2pm

SAN FRANCISCO (AFP) - Spain's victory in the Euro 2012 football final sparked a new sports-related record for tweets per s...

U.S. Seeks Record Civil Fine in Kalamazoo Spill

green.blogs.nytimes.com 02 Jul '12, 9pm

Reuters Oil on the Kalamazoo River near Marshall, Mich., in July 2010 after a rupture in an Endridge pipeline carrying dil...

T44 100m World Record for @JonniePeacock in USA

T44 100m World Record for @JonniePeacock in USA

uka.org.uk 01 Jul '12, 11am

Jonnie Peacock (coach: Dan Pfaff) created a huge shock overnight (30 June) running 10.85 seconds (+0.7m/s) for the T43/44 ...

Felix smashes Trials Record, Barron sets Americ...

runningnetwork.com 01 Jul '12, 5pm

Running away from one of the best fields of American 200-meter women ever assembled, Felix stunned the Hayward Field crowd...

Bangladeshi workers send home record $16b, a 10 per cent rise from the previous fiscal year

Bangladeshi workers send home record $16b, a 10...

straitstimes.com 04 Jul '12, 1pm

Construction workers watch officials inspecting the construction of the National Stadium ahead of the 2014 Fifa World Cup ...

Euro zone unemployment hits new record high of 11% in May; Spain is the hardest hit at 24.6%

Euro zone unemployment hits new record high of ...

straitstimes.com 02 Jul '12, 9am

In this March 29, 2012 file photo a woman sits alone in corridor in front of job consultants offices at the employment bur...

Audi R8 e-tron Sets New Production Electric Car Record At Nürburgring

Audi R8 e-tron Sets New Production Electric Car...

greencarreports.com 02 Jul '12, 8pm

"The torque with which the electric motors propel the car uphill beats everything that I know" said Winkelhock after the r...

£4.5M Auction Record: Tim Birkin’s Bentley Single Seater

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luxury-insider.com 02 Jul '12, 3am

A legendary Bentley red racer, once owned by the famously fearless daredevil and Le Mans winner Sir Henry Birkin, has fetc...

Record-breaking performances at Western States

runningtimes.com 25 Jun '12, 3pm

Western States 100 – Auburn, Ca. Unseasonably cool temperatures and deep competitive fields pushed Timothy Olson (Ashland,...

Record-breaking wildfires are "a window into what global warming really looks like"

Record-breaking wildfires are "a window into wh...

treehugger.com 02 Jul '12, 10pm

The wildfires in Colorado, the worst in the state's history , have snared headlines for over a week now. Violent flames, h...