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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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Difference between database and schema
What's the difference between a Database and a Schema in SQL Server? Both are the containers of tables and data.
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Removing a model in rails (reverse of “rails g model Title…”)
How can I completely remove this model? Thanks
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How to show git log history for a sub directory of a git repo?
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Can you use an alias in the WHERE clause in mysql?
I need to use an alias in the WHERE clause, but It keeps telling me that its an unknown column. Is there any way to get around this issue? I need to select records that have a rating higher than x. Rating is calculated as the following alias:
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How does Activity.finish() work in Android?
Could someone provide a description of what happens when an Activity calls its finish() method?
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How to change the decimal separator of DecimalFormat from comma to dot/point?
I have this little crazy method that converts BigDecimal values into nice and readable Strings.
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How do you get AngularJS to bind to the title attribute of an A tag?
The intent is to have a product name appear in the tooltip of a thumbnail.
Browsers do not create a tooltip from "ng-title" or "ng-attr-title."
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DESTDIR and PREFIX of make
I am trying to make software install to a specific directory. I found several ways, but not sure what are the differences between them.
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What's the difference between @Secured and @PreAuthorize in spring security 3?
It's not clear for me what is the difference in spring security between :
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