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What's an elegant way to conditionally add a class to an HTML element in a view?

...ad' %>"> Finally, you can use Rail's record tag helpers such as div_for, which will automagically set your ID and class based on the record you give it. Given a Person with id 47: # <div id="person_47" class="person good"> <% div_for @person, class: (@success ? 'good' : 'bad') do ...
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Purpose of buildscript block in Gradle

...ass with group: sample.infotask', name: 'infotask', version: '1.0' And use _uploadArchives task to upload it to local repo ../lib' In the another project if I use my task I must write: `buildscript { repositories { maven {url 'file:../lib' } } dependencies { classpath group: 'sample.infotask', name:...
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Error installing libv8: ERROR: Failed to build gem native extension

...m at /home/gitlab/gitlab/vendor/bundle/ruby/2.1.0/cache/libv8-3.16.14.3-x86_64-linux.gem. It may be corrupted. I remove the whole cache folder and re-run bundle install --full-index --deployment --without development test postgres aws. Works. – Nick Dong Mar 2...
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Download file of any type in Asp.Net MVC using FileResult?

...sult Download(int fileID) { Data.LinqToSql.File file = _fileService.GetByID(fileID); return new DownloadResult { VirtualPath = GetVirtualPath(file.Path), FileDownloadName = file.Name }; } In my example i was storing t...
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How can I drop all the tables in a PostgreSQL database?

...at this will not remove the system tables (such as those that begin with pg_) as they are in a different schema, pg_catalog. – congusbongus Aug 4 '14 at 7:07 38 ...
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Send email using the GMail SMTP server from a PHP page

... // Pear Mail Library require_once "Mail.php"; $from = '<fromaddress@gmail.com>'; $to = '<toaddress@yahoo.com>'; $subject = 'Hi!'; $body = "Hi,\n\nHow are you?"; $headers = array( 'From' => $from, 'To' => $to, 'Subject' =&...
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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?

... http://wiki.postgresql.org/wiki/Transactional_DDL_in_PostgreSQL:_A_Competitive_Analysis provides an overview of this issue from PostgreSQL's perspective. Is DDL transactional according to this document? PostgreSQL - yes MySQL - no; DDL causes an implicit commit Oracl...
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Remove non-ascii character in string

...fo/unicode/char/200B/index.htm https://en.wikipedia.org/wiki/Left-to-right_mark Note that although the encoding of the embedded character is UTF-8, the encoding in the regular expression is not. Although the character is embedded in the string as three bytes (in my case) of UTF-8, the instructio...
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Merge / convert multiple PDF files into one PDF

...eir order is preserved by "*". If its not preserved, using ranges: filename_{0..9}.pdf solves it. – lepe Jan 5 '15 at 5:48  |  show 18 more co...
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Add a custom attribute to a Laravel / Eloquent model on load?

...this->getMutatedAttributes() as $key) { if ( ! array_key_exists($key, $array)) { $array[$key] = $this->{$key}; } } return $array; } public function getUpperAttribute() { return strtoupper($this->title); ...