XF 2.0 Using array_shift on an ArrayCollection?

[Jaxel]

Fetching a thread's posts returns an ArrayCollection. I am trying to pop off the first element in the ArrayCollection using array_shift. Unfortunately this doesn't work because the entity finder returns an ArrayCollection rather than an array.

What would be the best way to accomplish this instead?

 

[Jake B.]

Pretty sure ArrayCollection has a first() method you can use for this

 

[DragonByte Tech]

Have you considered looking in the code? In your IDE, you should be able to see autocomplete for the methods on an ArrayCollection, but failing that, you can search for the FinderCollection or ArrayCollection classes, which extends the AbstractCollection class, which will lead you to XF\Mvc\Entity\AbstractCollection in the files.

Once you have found that class, you will find public function shift($returnType = 'entity'). If you look in the source code for that function, you can determine what $returnType parameter fits your needs.


Fillip

 

[Jake B.]

Ah, you're trying to remove the first item, read that wrong

 

[Jaxel]

Have you considered looking in the code? In your IDE, you should be able to see autocomplete for the methods on an ArrayCollection, but failing that, you can search for the FinderCollection or ArrayCollection classes, which extends the AbstractCollection class, which will lead you to XF\Mvc\Entity\AbstractCollection in the files.

Once you have found that class, you will find public function shift($returnType = 'entity'). If you look in the source code for that function, you can determine what $returnType parameter fits your needs.


Fillip

AbstractCollection->shift() doesn't function the same way array_shift() works.

array_shift() returns the first value in an array, AND removes the first value from the array.
AbstractCollection->shift() returns the first value in the collection, but does NOT remove the first value from the array.

shift() seems to pretty much be the same as first()

 

[DragonByte Tech]

AbstractCollection->shift() doesn't function the same way array_shift() works.

array_shift() returns the first value in an array, AND removes the first value from the array.
AbstractCollection->shift() returns the first value in the collection, but does NOT remove the first value from the array.

shift() seems to pretty much be the same as first()

While it may be sub-optimal to do it over two lines instead of one, nothing stops you from running $collection->first() then $collection->shift(false);


Fillip

 

[Jaxel]

While it may be sub-optimal to do it over two lines instead of one, nothing stops you from running $collection->first() then $collection->shift(false);


Fillip

That worked... but I noticed $collection->shift(false) actually changes all the entity keys...

I figured it out using $collection->slice(1) instead.