How to send multiple arguments to Filter inner function in RethinkDB

Question

Hello i need somehow to pass the filter method 2 or more arguments. Something like r.table("N/A").filter(function(arg1,arg2){..code here})

I need it for the following:

I have a data structure like the following:

"client":{
"name":"andrew",
"coords":{"lat":200,"long":300} 
}

I want to get a list of all clients , and for each client in this list i want his properties merged with the other clients that respect a filter predicate.I need to pass multiple arguments to filter function.

clients{

client:{
"name":"andrew",
"coords":{"lat":200,"long":300}
"neighbours":{ 
  "name":"Dean","coords":{"lat":100,"long":200}
  "name":"Sean","coords":{"lat":55,"long":120}
}
client:{
 "name":"Dean",
 "coords":{"lat":100,"long":200}
 "neighbours":{
  "name":"Sean","coords":{"lat":55,"long":120}
}
client:{
 "name":"Sean",
 "coords":{"lat":100,"long":200}
 "neighbours":{}
}

}

My failed attempt:

r.db("cldb").table("clt").pluck(
  {"name","coord"}).merge(function(currentClient){
  return {
  r.db("cldb").table("clt").filter(
    function(currentClient,neighbourClient){
    currentClient("lat").gt(neighbourClient("lat"))
                        .and(currentClient("long").gt(neighbourClient("long")))}
    )}
  })

score 0 · Answer 1 · answered Apr 23 '18 at 09:19

Not quite sure if i understood your question correctly.

r.db("cldb")
.table("clt")
.pluck(["name", "coord"]) // <- [] instead of {}
.merge(function (currentClient) {
    return {
        // When using objects, you have to specify a property name.
        propertyNameThatYouWant: r.db("cldb")
        .table("clt")
        .filter(function (neighbourClient) {
            currentClient("lat")
            .gt(neighbourClient("lat"))
            .and(currentClient("long").gt(neighbourClient("long")))
        })
    }
})

So not tested, but i think that should work. When you nest two functions, the argument of the outer function is available in the inner function.

How to send multiple arguments to Filter inner function in RethinkDB

1 Answers1