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Change a Rails application to production
...and start the migration with rake db:migrate. Make certain that a database table exists, even if you plan on adding tables later (this is also part of step 1).
RAILS_ENV=production rake secret - this will create a secret_key that you can add to config/secrets.yml . You can copy/paste this into confi...
Why is a ConcurrentModificationException thrown and how to debug it
...
I agree however that if it is unpredictable, there is most likely a threading issue which is causing the conditions for this exception to occur. Which makes it all the more confusing because of the exception name.
– Robin
M...
Should I put input elements inside a label element?
...e
</label>
Note that the third technique cannot be used when a table is being used for layout, with the label in one cell and its associated form field in another cell.
Either one is valid. I like to use either the first or second example, as it gives you more style control.
...
Rich vs Anemic Domain Model [closed]
...e to fetch the Order, Customer, Loyalty Program, Marketing Campaign, Taxes Table from the DB. Consider also, a Customer has a collection of Orders, a Loyalty Program has a collection of Customers and so forth. If we naively fetch all of these, we'll end up loading the whole DB in RAM. This isn't via...
How to serialize SqlAlchemy result to JSON?
...s_dict(self):
return {c.name: getattr(self, c.name) for c in self.__table__.columns}
And then you use User.as_dict() to serialize your object.
As explained in Convert sqlalchemy row object to python dict
share
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How to find if a native DLL file is compiled as x64 or x86?
...ate stamp Tue Apr 06 12:26:59 2010
0 file pointer to symbol table
0 number of symbols
F0 size of optional header
2022 characteristics
Executable
Application can handle large (>2GB) addresses
...
How to send an email using PHP?
...chments so you don't have to write your own implementation.
The class is stable and it is used by many other projects like Drupal, SugarCRM, Yii, and Joomla!
Here is an example from the page above:
<?php
require 'PHPMailerAutoload.php';
$mail = new PHPMailer;
$mail->isSMTP(); ...
What is the size of column of int(11) in mysql in bytes?
...prefixed with 0s.
The best way to see all the nuances is to run:
CREATE TABLE `mytable` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`int1` int(10) NOT NULL,
`int2` int(3) NOT NULL,
`zf1` int(10) ZEROFILL NOT NULL,
`zf2` int(3) ZEROFILL NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=Inn...
How do I design a class in Python?
...s a question of "mutability". Some objects get updated, others don't. Mutable objects must own total responsibility for their mutations.
At this point, you can start to transform nouns into class definitions. Some collective nouns are lists, dictionaries, tuples, sets or namedtuples, and you do...
Equivalent of *Nix 'which' command in PowerShell?
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i like running: Get-Command <command> | Format-Table Path, Name so i can get the path where the command sits too.
– jrsconfitto
Nov 27 '12 at 15:17
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