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How to set a default value for a datetime column to record creation time in a migration?
...rd::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and answer there by prathamesh-sonpatki
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Is there a combination of “LIKE” and “IN” in SQL?
In SQL I (sadly) often have to use " LIKE " conditions due to databases that violate nearly every rule of normalization. I can't change that right now. But that's irrelevant to the question.
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Create folder with batch but only if it doesn't already exist
Can anybody tell me how to do the following in in a Windows batch script? ( *.bat ):
9 Answers
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Why do we use arrays instead of other data structures?
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Time to go back in time for a lesson. While we don't think about these things much in our fancy managed languages today, they are built on the same foundation, so let's look at how memory is managed in C.
Before I dive in, a...
C# DateTime.Now precision
I just ran into some unexpected behavior with DateTime.UtcNow while doing some unit tests. It appears that when you call DateTime.Now/UtcNow in rapid succession, it seems to give you back the same value for a longer-than-expected interval of time, rather than capturing more precise millisecond incre...
Iteration ng-repeat only X times in AngularJs
...ally satisfy the OP's question. He is simply looking for a way to repeat n times, and likely doesn't have an actual object to iterate over.
– SamHuckaby
Oct 16 '14 at 16:05
2
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ssl_error_rx_record_too_long and Apache SSL [closed]
I've got a customer trying to access one of my sites, and they keep getting this error > ssl_error_rx_record_too_long
15 An...
How can I control the width of a label tag?
The label tag doesn't have the property 'width', so how should I control the width of a label tag?
7 Answers
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How to add a search box with icon to the navbar in Bootstrap 3?
...ould get without adding any custom CSS (this I'd already figured as of the time of asking the question; guess I've to stick with this):
And the markup in use:
<form class="navbar-form navbar-left" role="search">
<div class="form-group">
<input type="text" class="form-c...
When to use symbols instead of strings in Ruby?
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TL;DR
A simple rule of thumb is to use symbols every time you need internal identifiers. For Ruby < 2.2 only use symbols when they aren't generated dynamically, to avoid memory leaks.
Full answer
The only reason not to use them for identifiers that are generated dynamicall...