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Adding :default => true to boolean in existing Rails column
...st go in the rails console and update all the records (which I would not recommend in production).
When you added t.boolean :show_attribute, :default => true to the create_profiles migration, it's expected that it didn't do anything. Only migrations that have not already been ran are executed. If...
How to set a cookie for another domain
...ad user experience you can set an image on domain A.
<img src="http://www.example.com/cookie.php?val=123" style="display:none;">
And then on domain B that is example.com in cookie.php you'll have the following code:
<?php
setcookie('a', $_GET['val']);
?>
Hattip to Subin
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How do I remove a submodule?
... is mentioned in Daniel Schroeder's answer, and summarized by Eonil in the comments:
This leaves .git/modules/<path-to-submodule>/ unchanged.
So if you once delete a submodule with this method and re-add them again, it will not be possible because repository already been corrupted.
g...
Why does DEBUG=False setting make my django Static Files Access fail?
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How do you unit test a Celery task?
...hen working with celery tasks. The first one (as I'm suggesting bellow) is completely synchronous and should be the one that makes sure the algorithm does what it should do. The second session uses the whole system (including the broker) and makes sure I'm not having serialization issues or any othe...
Bootstrap 3 modal vertical position center
...er vertically not just the bootstrap modal but everything else. css-tricks.com/centering-in-the-unknown
– Mark S
Jan 20 '15 at 2:05
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Developing C# on Linux
...g/wiki/MonoDevelop
http://en.wikipedia.org/wiki/Mono_%28software%29
http://www.mono-project.com/Development_Environments
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Rails: How to change the title of a page?
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How to get the sizes of the tables of a MySQL database?
...ork for the InnoDB storage engine? According to mysql doc here - dev.mysql.com/doc/refman/5.7/en/show-table-status.html, the data_length field for that engine contains the size of the clustered index. That won't correctly represent the size of the data. Will it?
– euphoria83
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How to declare a variable in MySQL?
...sort_buffer_size;
They can be set at server startup using options on the command line or in an option file.
Most of them can be changed dynamically while the server is running using SET GLOBAL or SET SESSION:
-- Syntax to Set value to a Global variable:
SET GLOBAL sort_buffer_size=1000000;
SET @...