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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...
In where shall I use isset() and !empty()
...nd the answer is:
$var = "";
var_dump(isset($var));
The type comparison tables in PHP’s manual is quite handy for such questions.
isset basically checks if a variable has any value other than null since non-existing variables have always the value null. empty is kind of the counter part to iss...
UITableViewHeaderFooterView: Unable to change background color
I'm trying to change the background color of UITableViewHeaderFooterView. Although the view is appearing, the background color remains the default color. I'm getting a log from xcode saying:
...
javascript find and remove object in array based on key value
...and girls"},
{"id":"108","name":"You are awesome!"}
],
id = 88;
console.table(data);
$.each(data, function(i, el){
if (this.id == id){
data.splice(i, 1);
}
});
console.table(data);
share
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How to replace multiple strings in a file using PowerShell
...ign the output to a variable ($line) and then output the variable:
$lookupTable = @{
'something1' = 'something1aa'
'something2' = 'something2bb'
'something3' = 'something3cc'
'something4' = 'something4dd'
'something5' = 'something5dsf'
'something6' = 'something6dfsfds'
}
$o...
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...
Google App Engine: Is it possible to do a Gql LIKE query?
...
BigTable, which is the database back end for App Engine, will scale to millions of records. Due to this, App Engine will not allow you to do any query that will result in a table scan, as performance would be dreadful for a well...
CSS @media print issues with background-color;
...and we have a product that uses miles of css. I'm attempting to make a printable stylesheet for our app but I'm having issues with background-color in @media print .
...
SQL injection that gets around mysql_real_escape_string()
...:
$iId = mysql_real_escape_string("1 OR 1=1");
$sSql = "SELECT * FROM table WHERE id = $iId";
mysql_real_escape_string() will not protect you against this.
The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is als...
Align image in center and middle within div
...lute; width:100%; height:100%"> <img src="img8a.flixcart.com/image/tablet/f/k/t/…"> </div> </body> </html>
– nizam.sp
Oct 21 '13 at 11:00
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