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What is the right way to override a setter method in Ruby on Rails?
...:
class Model < ActiveRecord::Base
def attribute_name=(value)
# custom actions
###
super(value)
end
end
===========================================================================
Original Answer
If you want to override the setter methods for columns of a table while access...
Setting action for back button in navigation controller
...button in a navigation controller. I've provided a target an action on the custom button. The odd thing is when assigning it though the backbutton attribute it doesn't pay attention to them and it just pops the current view and goes back to the root:
...
“From View Controller” disappears using UIViewControllerContextTransitioning
...ntationStyle = UIModalPresentationFullScreen. You of course still get your custom transition animation.
– Chris
May 15 '15 at 5:20
1
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How do I create a parameterized SQL query? Why Should I?
...ple would do this through a server side programming language library, like PHP's PDO or Perl DBI.
For instance, in PDO:
$dbh=pdo_connect(); //you need a connection function, returns a pdo db connection
$sql='insert into squip values(null,?,?)';
$statement=$dbh->prepare($sql);
$data=array('my...
Inspect attached event handlers for any DOM element
..... at least for me. When I opened the event, it only has jQuery events, my custom event for that particular element doesn't show. I use $._data for custom events I attach with jQuery. See stackoverflow.com/questions/2008592/…
– stack247
Jun 24 '14 at 22:37
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
... data (PATCH) or entirely replace the data (PUT)
Let's say you delete the customer than using cascade=REMOVE will also remove that customers orders which seem intended and useful.
@OneToMany(cascade=REMOVE, mappedBy="customer")
public List<Order> getOrders() { ... }
Now let's say you updat...
Bootstrap 3 breakpoints and media queries
...strap 3 Media Queries
/*========== Mobile First Method ==========*/
/* Custom, iPhone Retina */
@media only screen and (min-width : 320px) {
}
/* Extra Small Devices, Phones */
@media only screen and (min-width : 480px) {
}
/* Small Devices, Tablets */
@media only screen and (min-width : 7...
Proper Linq where clauses
...
when i run
from c in Customers
where c.CustomerID == 1
where c.CustomerID == 2
where c.CustomerID == 3
select c
and
from c in Customers
where c.CustomerID == 1 &&
c.CustomerID == 2 &&
c.CustomerID == 3
select c customer table ...
Will the base class constructor be automatically called?
Would the age of customer be 2? It seems like the base class's constructor will be called no matter what. If so, why do we need to call base at the end sometimes?
...
What is the difference between Strategy design pattern and State design pattern?
...
Consider an IVR (Interactive Voice Response) system handling customer calls. You may want to program it to handle customers on:
Work days
Holidays
To handle this situation you can use a State Pattern.
Holiday: IVR simply responds saying that 'Calls can be taken only on working d...