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If string is empty then return some default value
... with a model. If you wanted a reasonable default value everywhere in your app, you could (for example) override the address method for your User model.
I don't know ActiveRecord well enough to provide good code for this; in Sequel it would be something like:
class User < Sequel::Model
def ad...
Is there a zip-like function that pads to longest length in Python?
...code works. Or why it is the right answer
– Suit Boy Apps
Oct 12 '19 at 3:19
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Rails.env vs RAILS_ENV
...ingInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::StringInquirer:
Wrapping a string in this class gives
you a prettier way to test for
equality. The value returned by
Rails.env is wrapped in a
StringInquirer object so instead of
ca...
When NOT to use Cassandra?
...ent solutions and you have to understand which one is best suited for your app/system requirements. For example, MongoDB is fit for use cases where your system demands a schema-less document store. HBase might be fit for search engines, analyzing log data, or any place where scanning huge, two-dime...
Avoid web.config inheritance in child web application using inheritInChildApplications
...ed, you cannot simply add the line...
<location path="." inheritInChildApplications="false">
...just below <configuration>. Instead, you need to wrap the individual web.config sections for which you want to disable inheritance. For example:
<!-- disable inheritance for the connect...
Returning a file to View/Download in ASP.NET MVC
...o try to show the file inline
Inline = false,
};
Response.AppendHeader("Content-Disposition", cd.ToString());
return File(document.Data, document.ContentType);
}
NOTE: This example code above fails to properly account for international characters in the filename. See RFC6266 f...
ASP.NET web.config: configSource vs. file attributes
Within an web.config -file in an ASP.NET-application some sections of config, like appSettings and connectionStrings , supports the attributes file and configSource .
...
Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...art up script to get a heap dump when we get an out of memory error in our application. I was wondering where this data gets dumped? Is it just to the console, or to some log file? If it's just to the console, what if I'm not logged into the Unix server through the console?
...
What is an .axd file?
... which are generated at runtime whenever you use ScriptManager in your Web app. This is being generated only once when you deploy it on the server.
Simply put the ScriptResource.AXD contains all of the clientside javascript routines for Ajax. Just because you include a scriptmanager that loads a s...
Get current stack trace in Ruby without raising an exception
I want to log the current backtrace (stacktrace) in a Rails 3 app without an exception occurring. Any idea how?
3 Answers...