Question

I am getting the following error
Fatal error: Call to undefined method MongoCollection::command() in /home/cr47/public_html/methods.php on line 67 when I try to get unique records from the MongoDB I am working with.

I have the code listing all of my records correctly but I don’t want to list duplicates. So I changed my list Records function from this(works but lists “Butter” 20 times instead of once):

public function listRecords($query = null){
    $this->find($query);

    foreach($this->cursor as $record) {
        $ing = $record['Shrt_Desc'];

        echo '<a href="find.php?Shrt_Desc=' . $ing .'"> ' . $ing . ' </a> </br>';

    }
}

I modified the above function(in an attempt to make “Butter” only list once):

public function listRecords($query = null){
    $this->find($query);
    foreach($this->cursor as $record) {
        //$ing = $record['Shrt_Desc'];
        $ing = $this->command(array("distinct" => "record", "key" => "Shrt_Desc"));
        echo '<a href="find.php?Shrt_Desc=' . $ing .'"> ' . $ing . ' </a> </br>';
    }
}

Here is the distinct.php page where I instantiate my classes and call my functions:

        include ("methods.php");
        $csvCommands = new csvCommands();
        $csvCommands->listRecords();

Answer 1

I think the problem is that you are calling $this->find($query) are you sure you have a method called find or you are trying to call MongoDB find method it should be something like $this->db->find or $this->mongoDB->find

I think is better to upload your full call so that we can look at it better if you are still having issues

Edit 1

Replace

$this->command

With

$this->connection->command

Thanks

🙂