Mongodb support

[nguago]

Hi,

I think Tree should support MongoDB. I see you use creocoder/yii2-nested-sets. If you do not have the version of MongoDB, you can use this https://github.com/letyii/yii2-mongo-nested-set

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[skworden]

+1 for supporting this!

[kartik-v]

Would prefer one extension to manage this... for maintainability. Ideally check if @creocoder can include this functionality.

Alternatively if that's not possible - an extension which extends creocoder's nested set will be preferred. Most of the code inside will break if the extension is not consistent with creocoder's nested set.

[nguago]

All functions are to convert from creocoder's nested set. Why not try?

[kartik-v]

The extension does not extend creocoder's NestedSetBehavior and is copied and modified. While it may work now... but with future updates to creocoder's extension ... the tree manager code may break and needs to be consistently maintained for two different extension versions.

Hence its better to maintain one code base OR use yii's recommended method of extending classes - so that the core class behavior is maintained. Pinging @creocoder to comment if this functionality can be included.

[creocoder]

I'll consider to add mongo db support to extension, but can't promise it can be done fast.