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Preventing Laravel adding multiple records to a pivot table
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@alexandre Butynsky method works very well but use two sql queries.
One to check if cart contains the item and one to save.
To use only one query use this:
try {
$cart->items()->save($newItem);
}
catch(\Exception $e) {}
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WebSockets vs. Server-Sent events/EventSource
..., or other automated data push mechanisms (e.g. updating a client-side Web SQL Database or IndexedDB object store). If you'll need to send data to a server, XMLHttpRequest is always a friend.
SSEs are sent over traditional HTTP. That means they do not require a special protocol or server implem...
How to select different app.config for several build configurations
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$(ProjectDir)App.Config.Settings.xls
MachineName ConfigFilePath SQLServer
default App.config DEVSQL005
Test App.config TESTSQL005
UAT App.config UATSQL005
Production App.config PRODSQL005
YourLocalMachine ...
Multiple queries executed in java in single statement
... as it currently provides an exception even though it is possible in the MySQL query browser.
6 Answers
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In C#, how do I calculate someone's age based on a DateTime type birthday?
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Actually this is great for usage on MS-SQL with datetime-fields (total days since 01-011900)
– Patrik
Jul 3 '15 at 12:01
5
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Difference between HBase and Hadoop/HDFS
This is kind of naive question but I am new to NoSQL paradigm and don't know much about it. So if somebody can help me clearly understand difference between the HBase and Hadoop or if give some pointers which might help me understand the difference.
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Why does this assert throw a format exception when comparing structures?
...en't expecting foo nor was the actual value bar!
Basically this is like a SQL injection attack, but in the rather less scary context of string.Format.
As a workaround, you can use string.Formatas StriplingWarrior suggests. That avoids the second level of formatting being performed on the result of...
Storing custom objects in an NSMutableArray in NSUserDefaults
...erDefaults shouldn't be used for storage of large arrays (Core Data or raw SQLite should be used for that instead), but it's perfectly fine to stash small arrays of encoded objects there. In any case, the question was asking how to do this, which is what the above code provides. As far as the votes,...
Parse usable Street Address, City, State, Zip from a string [closed]
... have an address field from an Access database which has been converted to Sql Server 2005. This field has everything all in one field. I need to parse out the individual sections of the address into their appropriate fields in a normalized table. I need to do this for approximately 4,000 records an...
How can I use redis with Django?
...ct fit for redis. Also, once you go above a million rows of anything in a SQL db, redis can be a great complimentary resource for membership testing ( eg Are these entities in this domain? )
– David
Jun 24 '13 at 16:00
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