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Rails: create on has_one association
Hi (huge Rails newbie here), I have the following models:
4 Answers
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Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
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How to check for Is not Null And Is not Empty string in SQL server?
How can we check in a SQL Server WHERE condition whether the column is not null and not the empty string ( '' )?
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How to override Backbone.sync?
I'm trying out Backbone.js, and one of the things I'm trying is to make a call to a remote API, so I need to be able to override Backbone.sync, as I understand the documentation .
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What is the meaning of CTOR?
In a lot of C# files I save regions tags(?) that are named CTOR or ctor. What's the meaning of ctor? Why is such a region called ctor?
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How do I see all foreign keys to a table or column?
In MySQL, how do I get a list of all foreign key constraints pointing to a particular table? a particular column? This is the same thing as this Oracle question , but for MySQL.
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Rails auto-assigning id that already exists
I create a new record like so:
5 Answers
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Concurrent.futures vs Multiprocessing in Python 3
Python 3.2 introduced Concurrent Futures , which appear to be some advanced combination of the older threading and multiprocessing modules.
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Visual Studio 2013 doesn't discover unit tests
I have a simple solution in visual studio 2013 that is composed by one web project, one library project and one unit test project. When I open the solution and try to run the unit tests they are not discover by visual studio. To run the tests I try to go to the menu and choose Test -> Run -> Run all...
How to reset a remote Git repository to remove all commits?
How can I reset a remote and local Git repository to remove all commits?
3 Answers
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