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Editorial Team
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Editorial Team
Asked: June 11, 20262026-06-11T05:39:32+00:00 2026-06-11T05:39:32+00:00

I am trying to insert a many to many relation in my symfony2 project.

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I am trying to insert a many to many relation in my symfony2 project.
I have followed all steps from Symfony2-Doctrine: ManyToMany relation is not saved to database

ALL records are entered in items table except category_id…

Any idea ???

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  1. Editorial Team
    Editorial Team
    2026-06-11T05:39:34+00:00Added an answer on June 11, 2026 at 5:39 am

    It’s because category_id shouldn’t be in items table but in items_categories table (it’s many to many relation so Doctrine will create third table to achieve this)

    You specify $categories field in your Item entity (Doctrine doesn’t create any additional column like category_id). category_id is database concept. On ORM level you don’t use columns – you just use entity properties

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