Comments on: CakePHP: HasAndBelongsToMany (HABTM)

By: edivad

edivad — Wed, 03 Jun 2009 08:33:54 +0000

@sam, this post is related to the cakephp 1.0. Now there’s the 1.2, that by the .cpt file, it seems you are using.

Unfortunly I still havent had time to do nothing with cake 1.2. Try asking in the mailing list.

By: sam

sam — Wed, 03 Jun 2009 00:29:29 +0000

Hi!
Indeed a very time saving issue here… wow, thx a lot!

i did it also, but i recognized that the relation table is a) not saved and b) exisiting relations are not displayed.

So, i just put the $form->select-Stmt into the view. I did not change the model classes.

Like that:
echo $form->select(‘Role/Role’,$roles,null,array(‘multiple’=>’mu
ltiple’));

(I’ve a table names actions, roles and actions_roles; it’s in file views/actions/edit.ctp)

Any idea what i’ve to change?

Thx, Sam

By: Jeremy

Jeremy — Tue, 30 Dec 2008 00:54:48 +0000

Your article was helpful and I don’t know if it changed between versions. But relatedtable/relatedtable as the field name is not quite right.

2 issues, minor one first, new syntax is with period I believe.

Second more important issue, naming the form field this will get the selection to display the tables values in the xref, especially if there is a title field in the corresponding table and you do form->input. But it’s not the relatedtable name, it’s the related model name. So if you are in the User add view, doing form->input(‘Profile.Profile’) will display it, and the model will recognize and save it. Assuming you did put var $hasAndBelongsToMany = array(“Profile”); in the User model.

By: edivad

edivad — Wed, 01 Oct 2008 09:05:30 +0000

@Terri, sorry but without any extract of code I can’t understand
why. You better ask in the mailing list
posting some code. There are many people more expert than me

By: Terri Ann

Terri Ann — Tue, 30 Sep 2008 20:44:51 +0000

This was fantastically helpful, thanks! My only problem is that the data isn’t saving on add or edit.

It displays, and selects correctly but it never saves these associations. Am I missing something. I’ve never used bake and I am incorperating this into something that’s already been built do I didn’t think that erasing it all to bake would be a good idea either.

*cheers!*

By: Matbaa

Matbaa — Fri, 12 Sep 2008 11:00:06 +0000

Could you explain to save this to database?

By: edivad

edivad — Wed, 25 Jun 2008 10:37:25 +0000

I don’t remember well but it should be enough to do a $this->Post->save(… ) if every relationship has been defined correctly in the Model and the view has been build correctly.

By: Fiqhi

Fiqhi — Wed, 25 Jun 2008 10:26:23 +0000

Hi,
I want to know, whether how to save data with HABTM relationship?
I have 3 tables, Posts, Categories, and Categories_Posts. 1 post, can have 2 or more categories.

First, i saved the data to Posts table, to get the last ID.
But, I get confuse when saving data to Categories_Posts.

Can you help me? thx a lot

By: Jan

Jan — Mon, 12 May 2008 17:57:29 +0000

Anyone knows how to ‘interrelate’ instances of the vary same model? As in a way of grouping similar products, for example.
Could I do this by adding $hasAndBelongsToMany = array(‘Product’); to my Product model? If yes, what would the relationship table look like, since you can’t have two product_id columns? Another example would be dependencies.

By: josepzin

josepzin — Mon, 17 Mar 2008 08:03:41 +0000

Buen artículo!

No sabía que se podía hacer: $this->Modelo1->Modelo2->generateList()