using ActiveQuery::Exists() method in friendly mode

[ziaratban]

Q	A
Is bugfix?	no
New feature?	yes
Breaks BC?	no
Tests pass?	yes

example (fetch document from database)

if(!MyActiveRecord::exists(['my condition for pass to where()']),$myRecord)
    return false;
$myRecord->field1 = 'value';

example (no fetch document from database)

if(!MyActiveRecord::exists(['my condition for pass to where()']))
    return false;

this PR is efficient when that PR committed.

[samdark]

Thanks for contribution but this shortcut doesn't look alright:

1. It's both find() and exists() while called exists().
2. There's a pass by reference.
3. It is not significantly simpler than using find()->where()->exists().
4. Even if above is OK, that should be implemented in AR overall, not on MongoDB specifically.

Therefore decision is not to accept the pull request.

[ziaratban]

@samdark thanks.

my goals of writing this method is a simple and efficient programming.
i tested this method on my employee and it had good feedback.

It's both find() and exists() while called exists().

no. it is based on-demand. when you set parameter 2 then one() method called.

There's a pass by reference.

this is main goal. by this feature if you set then you get.

It is not significantly simpler than using find()->where()->exists().

please see this example:

$myUserForDelete = User::find()->where([...])->one();
if(!$myUserForDelete)
    return 'error';
$myUserForDelete->Delete();

or

#low code
#better understanding
if(!User::Exists([...],$myUserForDelete))
     return 'error';
$myUserForDelete->Delete();

Even if above is OK, that should be implemented in AR overall, not on MongoDB specifically.

only php side.

[samdark]

no. it is based on-demand. when you set parameter 2 then one() method called.

Yes, that's what I mean. It does two things and that is not good.

[ziaratban]

thanks for comment.