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How do you write a migration to rename an ActiveRecord model and its table in Rails?
...ble_name
end
end
I had to go and rename the model declaration file manually.
Edit:
In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:
class RenameOldTableToNewTable < ActiveRecord::Migration
def change
rena...
Is there a query language for JSON?
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Sure, how about:
JsonPath.
Json Query
They all seem to be a bit work in progress, but work to some degree. They are also similar to XPath and XQuery conceptually; even though XML and JSON have different conceptual models (hierarchic vs object/struct).
EDIT Sep-2015: ...
Display JSON as HTML [closed]
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and what if the string is all in one line? how does he make it nicely formatted like that?
– geowa4
May 19 '09 at 17:15
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Can I use CoffeeScript instead of JS for node.js?
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To install coffee sudo npm install -g coffee-script
– Dmitry Polushkin
Nov 6 '13 at 12:44
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How to get config parameters in Symfony2 Twig Templates
...on%'
Twig template:
{{ version }}
This method provides the benefit of allowing you to use the parameter in ContainerAware classes as well, using:
$container->getParameter('app.version');
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What is the difference between “git branch” and “git checkout -b”?
... does the same thing.
How do these two commands differ, if they differ at all?
7 Answers
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Installing PIL with pip
I am trying to install PIL (the Python Imaging Library) using the command:
21 Answers
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Python circular importing?
... of it) for the first time, the code inside the module is executed sequentially like any other code; e.g., it is not treated any differently that the body of a function. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of th...
SQL Server Management Studio, how to get execution time down to milliseconds
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The part regarding the Properties window is really the answer to this thread. "Elapsed Time" is sitting there staring you in the face.
– Eric
Jan 20 '15 at 23:32
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How to get the current directory of the cmdlet being executed
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Yes, that should work. But if you need to see the absolute path, this is all you need:
(Get-Item .).FullName
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