Doctrine 2: Error: Class “..\..” has no field or association named “…”

问题

When searching I came up with many results of people having similar problems but they were always related to association errors. I'm trying add a simple text field to a table in a database and, for the life of me, I can't figure out what's different about this time - when I've done it with no problems many times before.

I've added a 'record_checksum' field to 4 different entities, but I will use just one, here to simplify the example. (The same error happens for all 4).

Here is an example of my Entity\Cloud.php file, with the 'record_checksum' field added at the bottom:

use Doctrine\ORM\Mapping as ORM;

namespace Entity;

/**
 * Entity\Cloud
 *
 * @orm:Table(name="cloud")
 * @orm:Entity
 * @orm:HasLifecycleCallbacks
 */
class Cloud
{
    /**
     * @var integer $id
     *
     * @orm:Column(name="id", type="integer", length="13")
     * @orm:Id
     * @orm:GeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @var float $position_x
     *
     * @orm:Column(name="position_x", type="float", length=9)
     */
    private $position_x;

    /**
     * @var float $position_y
     *
     * @orm:Column(name="position_y", type="float", length=9)
     */
    private $position_y;

    /**
     * @var string $commit_group
     *
     * @orm:Column(name="commit_group", type="string", length=32, nullable=true)
     */
    private $commit_group;

    /**
     * @var string $commit_key
     *
     * @orm:Column(name="commit_key", type="string", length=13, nullable=true)
     */
    private $commit_key;

    /**
     * @var string $record_checksum
     *
     * @orm:Column(name="record_checksum", type="string", length=32, nullable=true)
     */
    private $record_checksum;

The rest of the class is getter/setter methods, so I will leave it out. To see the entire Entity file, I put it up on pastebin ( http://pastebin.com/9LheZ6A1 ). The 'commit_key' I'd just added a few weeks ago, with no problems.

Now I update the schema:

$ doctrine orm:schema-tool:update --dump-sql
ALTER TABLE cloud ADD record_checksum VARCHAR(32) DEFAULT NULL;
$ doctrine orm:schema-tool:update --force
Updating database schema...
Database schema updated successfully!

I verified this field now exists in the DB table.

However, when I run a simple DQL query like this:

$dql =  "SELECT c.id AS id, c.commit_key AS key, c.record_checksum AS checksum ".
                "FROM Entity\\Cloud c WHERE c.commit_group = :commit_group";

I get the error:

 [Semantical Error] line 0, col 42 near 'record_checksum': Error: Class Entity\Cloud has no field or association named record_checksum,

I've banged my head on the wall over this for a while now. I'm sure I'm overlooking something really stupid. Any help is greatly appreciated! -Nick

回答1:

Try to:

Clear any cache that may contain the config or PHP code.
Rename a field in case the first solution didn't work.

回答2:

Go to the Entity in question and check the variable name. If it's something like TESTVar, and you're trying to use testVar in the query, it's going to give you the error that the variable doesn't exist in the Entity.

Change the query to use TESTVar instead of testVar, and it will work.

来源：https://stackoverflow.com/questions/10711211/doctrine-2-error-class-has-no-field-or-association-named

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php

orm

doctrine-orm

dql