What is the best way to create a tree structure that can hold data from multiple sources?

I have a variety of Models within my application:

ModelA:
fields: [id, name],
hasMany: ModelB

ModelB:
fields: [id, name, attr],
hasMany: ModelC

ModelC:
fields: [id, name, attr]

To efficiently manage this nested data, I utilize a data store in conjunction with a rest proxy:

ModelAStore:
model: 'ModelA'
proxy:{}

Now, my goal is to display these models in a tree panel:

The hierarchical structure will resemble the following:

ModelA
|-ModelBInstance
  |-ModelCInstance
  |-ModelCInstance
|-ModelBInstance
|-ModelBInstance

Upon clicking on a ModelBInstance, the corresponding data grid on another part of the interface should update.

Can someone provide guidance on how to achieve this functionality?

javascriptextjs

Answer №1

Essentially, you have two options:

  • Set up your proxy reader with typeProperty: 'mtype' and ensure that your rest API inserts either 'A', 'B', or 'C' in that designated field;

OR

  • Create your models with the property childType: A (the store model) will have childType: 'B', B will have childType: 'C'

This information can be found in the most recent Tree Panel manual under "Heterogeneous node types".

Answer №2

Why do you have 3 different models? It might be a better idea to consolidate them into one model and add an extra field to specify the type of content: 

Model:
fields: [id, name, attr, type]

As mentioned in the documentation at , the store you are using should have a root field ('children', 'data', etc.) to indicate that the current node has children nodes. So your model should include this field: 

Model:
fields: [id, name, attr, type, children]

If you decide to go with this approach, you may need to refactor how you generate your data...

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