Laravel Eloquent skip n, take all?

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爱一瞬间的悲伤
爱一瞬间的悲伤 2021-01-07 23:19

I\'ve noticed that in Laravel when chaining a skip() you must also use take() as well. I want to skip the first n rows but take the rest. The take

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  • 2021-01-07 23:31

    Basically, with every OFFSET, a LIMIT must be supplied for mysql to work. Therefore, there is no way to do this without sepcifying a limit. We need some php mojo to work here.

    Let's say we have an Eloquent Class named Attendance. Here's what should work:

    //Getting count
    $count = Attendance::count();
    $skip = 5;
    $limit = $count - $skip; // the limit
    $collection = Attendance::skip($skip)->take($limit)->get();
    
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  • 2021-01-07 23:40

    I think this is not a good answer, because you're forcing to do two queries, the right way will be:

    $collection = Attendance::skip($skip)->take($limit)->get();
    $collection.shift();
    

    You can see more about collections here

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  • 2021-01-07 23:40

    If you're using MySQL and you don't want to have 2 queries to get the max rows, you may use the PHP maximum INT value as take() parameter e.g. take(PHP_INT_MAX).

    It's because Laravel Query Grammar casts the limit to integer. So you can't use a larger number than that.

    From MySQL documentation on LIMIT:

    To retrieve all rows from a certain offset up to the end of the result set, you can use some large number for the second parameter.

    For example:

    \App\User::skip(10)->take(PHP_INT_MAX)->get();
    
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