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Database count is returning Undefined

I need small help in a small code. The function is returning [object Promise] and I want to return the count. When I use console.log within the function it works perfectly fine and shows the appropriate result, however when returning the code and use console.log outside the function it is saying [object Promise].

async function queryDB(num) 
{
    await wixData.query("numDB")
    .eq("nums", num)
    .find()
    .then( (results) => 
    {
        var  count = results.items.length
        console.log("count in function: " + count)
        return count
    })
    .catch( (err) => 
    {
        let errorMsg = err;
    } );
}

Then I call it with:

$w.onReady(function () 
{
    var num1 = queryDB("1");
    console.log("count out function: " + num1)    
});

And I am getting the following output:

count out function: [object Promise]
count in function: 3

TIA

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-12T06:17:48.617Z

A few issues here..

Your queryDB doesn't return anything, apart from an undefined Promise
Your mixing thenables with async / await, do one or the other.
Your catch is doing nothing, generally speaking avoid catch, unless your trapping something specific, handle errors further up, not in util functions.

Since your using async/await..

async function queryDB(num) 
{
    const results = await wixData.query("numDB")
      .eq("nums", num)
      .find();
    var count = results.items.length
    console.log("count in function: " + count)
    return count;
}

$w.onReady(async function () 
{
    var num1 = await queryDB("1");
    console.log("count out function: " + num1)    
});

For completeness, if you were not using async / await.

function queryDB(num) 
{
    return wixData.query("numDB") //don'f forget to return
      .eq("nums", num)
      .find()
      .then(results => {
         var count = results.items.length
         console.log("count in function: " + count)
         return count;
      });
}

$w.onReady(function () 
{
    queryDB("1").then(num1 => {
      console.log("count out function: " + num1)    
    });
});

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Database count is returning Undefined

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