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A migration to add unique constraint to a combination of columns
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The problem with the model level validation is that it doesn't scale. Two servers could run the same data through at the same time (like a double tap on an api heavy app) I have two identical records in my DB right now and the model has the validation..
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find vs find_by vs where
...its your needs best.
The find method is usually used to retrieve a row by ID:
Model.find(1)
It's worth noting that find will throw an exception if the item is not found by the attribute that you supply. Use where (as described below, which will return an empty array if the attribute is not foun...
Setting default permissions for newly created files and sub-directories under a directory in Linux?
... that every file and directory created under this shared directory automatically had u=rwxg=rwxo=r permissions.
4 Answers...
Define variable to use with IN operator (T-SQL)
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DECLARE @mylist TABLE (Id int)
INSERT INTO @mylist
SELECT id FROM (VALUES (1),(2),(3),(4),(5)) AS tbl(id)
SELECT * FROM Mytable WHERE theColumn IN (select id from @mylist)
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What is the proper way to URL encode Unicode characters?
... the query string to be encoded as--- for instance, in Tomcat, you have to call request.setEncoding() (or some similar method) before you call any of the request.getParameter() methods. The dearth of documentation on this subject probably reflects the lack of awareness of the problem amongst many de...
Aligning textviews on the left and right edges in Android layout
I am getting started with Android. I am having trouble getting a simple layout going.
9 Answers
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Where to put view-specific javascript files in an ASP.NET MVC application?
... This seems a good solution, however, but does it affect the call time to actions?
– Leandro Soares
Jan 13 '16 at 10:17
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Explanation of …
...rstand exactly what you're trying to do, but grabbing external files dynamically, to either run or parse as a template, is definitely possible. Check out requirejs.
– SgtPooki
Oct 31 '13 at 16:08
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File upload progress bar with jQuery
... ); but not call my function in progress
– Sumit patel
Aug 25 '18 at 11:44
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