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PODoctrine Mongo ODM UniqueIndex is replicated
 

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  1. PODoctrine Mongo ODM UniqueIndex is replicated
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    <p>I'm playing with the UniqueIndex that I picked from the doc of Doctrine ODM and it seems I have a misanderstood of what it aims to do.</p> <p>Indeed I have a Keyword Document mapped by Doctrine ODM : </p> <pre><code>Namespace App\Document; use Doctrine\ODM\MongoDB\Mapping\Annotations as ODM; /** * @ODM\Document * @ODM\UniqueIndex(keys={"name"="asc", "lang"="asc"}) */ class Keyword { /** @ODM\Id(strategy="AUTO") */ protected $id; /** @ODM\String */ protected $name; /** @ODM\String */ protected $lang; .... </code></pre> <p>As you can see the Document has an uniqueIndex on 2 keys (Name and Lang)</p> <p>I have a all simple script which persist this Document</p> <pre><code> .... .... $keyword=new \App\Document\Keyword(); $keyword-&gt;setCreateDate(new \DateTime()); $keyword-&gt;setLang("fr"); $keyword-&gt;setLastParseDate(new \DateTime()); $keyword-&gt;setName("test"); $dm-&gt;persist($keyword); $dm-&gt;flush(); </code></pre> <p>Now when i find from mongo shell, my data with the same pair Name/lang are replicated when they should be unique :</p> <pre><code>&gt; db.Keyword.find() { "_id" : ObjectId("5171c72c6155795e47000000"), "name" : "test", "lang" : "fr", "createDate" : ISODate("2013-04-19T22:37:32Z"), "lastParseDate" : ISODate("2013-04-19T22:37:32Z") } { "_id" : ObjectId("5171c7366155796147000000"), "name" : "test", "lang" : "fr", "createDate" : ISODate("2013-04-19T22:37:42Z"), "lastParseDate" : ISODate("2013-04-19T22:37:42Z") } { "_id" : ObjectId("5171c7406155796447000000"), "name" : "test", "lang" : "fo", "createDate" : ISODate("2013-04-19T22:37:52Z"), "lastParseDate" : ISODate("2013-04-19T22:37:52Z") } { "_id" : ObjectId("5171c7fd615579a747000000"), "name" : "test", "lang" : "fo", "createDate" : ISODate("2013-04-19T22:41:01Z"), "lastParseDate" : ISODate("2013-04-19T22:41:01Z") } { "_id" : ObjectId("5171c7fe615579aa47000000"), "name" : "test", "lang" : "fo", "createDate" : ISODate("2013-04-19T22:41:02Z"), "lastParseDate" : ISODate("2013-04-19T22:41:02Z") } </code></pre> <p>My goal is to make the pair name/lang unique for persistence.</p> <p>So I finally have two questions :</p> <ul> <li>What UniqueIndex is made for ? (Because it doesnt prevent to replication)</li> <li>Should I use a <code>custom strategy</code> that concatenates Name and Lang as an unique id ? Is it a common usage ?</li> </ul> <p>EDIT :</p> <p>Thanks to @gview advices I found that i didnt ensureIndexes. I fixed thanks to this link : <a href="http://www.testically.org/2011/08/25/using-a-unique-index-in-mongodb-with-doctrine-odm-and-symfony2/" rel="nofollow">http://www.testically.org/2011/08/25/using-a-unique-index-in-mongodb-with-doctrine-odm-and-symfony2/</a></p> <p>But now instead of update my entry, it throws an error for duplicate entry. Should i use custom id as i said above ?</p>
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    1. USSoufiane Ghzal
    1. USSoufiane Ghzal
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    1. COAre you sure that the index actually exists on the collection? Did you run the php app/console doctrine:mongodb:schema:create task?
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      1. USgview
    2. CONo I dont know that. But it seems it is something to use within Symfony app, isn't it ? because actualy I dont use symfony ! I'm just working on a little script out of any framework
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    3. COI found some doc at : http://www.testically.org/2011/08/25/using-a-unique-index-in-mongodb-with-doctrine-odm-and-symfony2/
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