Delete Mutation in Ratel does not delete edges on local machine?

Users
1

I ran the following mutation in Ratel on my local machine, localhost:8080

{
    set {
       <_:test> <name> 'test'.
       <_:test_1> <name> 'test_1'.
        <_:test> <rel> <_:test_1>
    }
}

Assume dgraph assigns uid 0xabc11 to _:test
Next I ran the mutation:

{
  delete{
      <0xabc11> * * . 
   }
}

when I query

{
    test(func:  uid(0xabc11)){
      uid
      rel {
        uid
      }
  }
}

I found that _:test is still connected to _:test_1

what is the correct way of delete both the predicate and the edge at the same time?

Update: After further testing I notice that the delete pattern <uid> * * . is not working on my localhost. I am not sure why.

Mutation Delete:

<uid> <rel> * . Works
<uid> <name> * . Works
<uid> * * . Doesn't work

Update 2: So i tested the query:

{
  tree(func:uid(0xabc11))
  {
    _predicate_
    expand(_all_) {}
  }
}

It returns nothing… no predicates no edges

But the query:

{
  tree(func:uid(0xabc11))
  {
       name
  }
}

returns the name that was supposed to be deleted?

Update 3: I even tried using the JSON format “delete”:[{“uid”:“0xabc11”}] but it still has the name when queried.

I feel like I am missing something really basic here.

2

You have to have the 'dgraph.type" in your dataset and also define the Type Schema.

e.g:

{
    set {
       _:test    <name>         "test"        . 
       _:test    <dgraph.type>  "User".       . 
       _:test_1  <name>         "test_1"      .
       _:test_1  <dgraph.type>  "User"        . 
       _:test    <rel>          _:test_1      .
    }
}

And add the Type Definition

type User {
  name
  rel
}

Now you are able to delete with the patterns you used.

3

Thanks its working now.

4

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