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Rails 3: Get Random Record
So, I've found several examples for finding a random record in Rails 2 -- the preferred method seems to be:
14 Answers
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
... vagrant up Vagrant will import the base-box and create a new virtual machine.
10 Answers
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Select Multiple Fields from List in Linq
In ASP.NET C# I have a struct:
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Django in / not in query
I'm trying to figure out how to write a 'not in' style query in django.
For example, the query structure I'm thinking of would look like this.
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...n you limit the number of rows to be returned by a SQL query, usually used in paging, there are two methods to determine the total number of records:
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How to properly create composite primary keys - MYSQL
Here is a gross oversimplification of an intense setup I am working with. table_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
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GCM with PHP (Google Cloud Messaging)
How can I integrate the new Google Cloud Messaging in a PHP backend?
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Foreign Key to multiple tables
I've got 3 relevant tables in my database.
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Modifying location.hash without page scrolling
We've got a few pages using ajax to load in content and there's a few occasions where we need to deep link into a page. Instead of having a link to "Users" and telling people to click "settings" it's helpful to be able to link people to user.aspx#settings
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How do I add a Fragment to an Activity with a programmatically created content view
...oked over the Fragment documentation but there aren't many examples describing what I need. Here is the type of code I tried to write:
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