dongzhe3171 2012-04-03 01:26
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尝试从DB获取唯一记录时未定义的方法MongoCollection :: command()

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();
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  • duangu6588 2012-04-03 01:30
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    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

    :)

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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