feat(populate): nested populates

[psych0der]

Hello there,

I have a data structure as follows

obj1 = {
   "Achildren": ["childobj1", "childobj2", "childobj3" ....],
   "Bchildren": ["childobj4", "childobj5", "childobj6" ....],
}

Achildren = {
   "childobj1": {
       "attr1": "val1",
       "attr2": "val2",
       "innerChildren": ["inchild1', ''inchild2', ''inchild3' .....]
    }    
}

InnerChildren = {
   inchild1: {...},
   inchild2: {...}
}

Is there a way that I can make nested populates work when I initially load Obj1?

[prescottprue]

There is not currently support for nested populates (they only work one level deep for now). Although this has been discussed, and I love the idea. I'll put it onto the roadmap.

[prescottprue]

Roadmap updated

[psych0der]

Thanks. Looking forward to use it soon :)

On Tue, Mar 21, 2017 at 1:48 PM Scott ***@***.***> wrote: Roadmap <http://react-redux-firebase.com/docs/roadmap.html#upcoming-minor-version-v140> updated — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#85 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA4q9aV9hKR2vL4Jnyujm_oDnjaUviGEks5rn4fygaJpZM4MiR8d> .

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[christianscheuer]

@prescottprue is there also a way to expand keys instead of parameters?
Say I have:

{
  "users": {
    "key1": {
      "name": "Adam",
      "licenses": {
        "licenseId1": true
      }
    },
    "key2": {
      "name": "Bob"
    }
  },
  "licenses": {
    "licenseId1": {
      "code": "xyz"
    }
  }
}

I want to populate the licenses index in my users with the full license objects from the /licenses. Since I'm not populating by a child with a fixed name, would that be possible with your code?

[prescottprue]

@christianscheuer It depends if you are talking about your own account or just the users list in general.

Users List - link to the example in the docs

const populates = [
  { child: 'licenses', root: 'licenses' }
]

@firebaseConnect([
  { path: '/users', populates }
])
@connect(({ firebase }) => ({
  users: dataToJS(firebase, '/users'), // users list not populated
  populatedUsers: populatedDataToJS(firebase, '/users', populates), // users with licenses populated
}))

Own Account - link to the example in the docs

const config = {
  userProfile: 'users',
  profileParamsToPopulate: [
   'licenses:licenses'
    // or object notation: { child: 'licenses', root: 'licenses' }
  ]
}

Since this isn't directly related to this issue, feel free to reach out over gitter or create another issue if you have more questions.

[prescottprue]

For clarity, here is the example I am using to work on this feature.

"todos": {
   $todoId: {
     "comments": {
       $commentId: true
     }
   },
},
"comments": {
  $commentId: {
    "owner": $uid
  }
},
"users": {
  $uid: {
    email: 'some@email.com',
    displayName: 'Some Guy'
  }
}

Populate a list of todos's comments, along with the "child population" of the owner of each comment. The connect syntax might look like so (could change):

const populates = [
  { child: 'comments', root: 'comments' }, // maybe childPopulates: 'owner' on here instead?
  { child: 'comments.owner', root: 'users' },
]

@firebaseConnect([
  { path: 'todos', populates }
])
@connect(({ firebase }) => ({
  todos: populate(firebase, 'todos', populates)
})

This feature is still in the works so syntax may change, but the hope is to get it into v2.0.0.

[psych0der]

The syntax looks exactly as expected 😃

[prescottprue]

@psych0der Good to hear.

The hope is to get this in to v2.0.0, but it was a but much to squeeze into v2.0.0-beta.

[projoneftw]

@prescottprue I see you're planning to add this to 1.6.0, isn't going into 2.0?