I appreciate the tangent! Thank you, I'm learning from you.
Unfortunately, switching contain as you mention still doesn't join to
Groups though. :(
Here's the query it produces:
SELECT `Product`.`id`, `Product`.`name`, `Product`.`small_image`,
`Product`.`large_image`, `Product`.`collection_id`,
`Product`.`product_type_id`, `Product`.`description`,
`Product`.`code`, `Collection`.`name`, `Collection`.`group_id` FROM
`products` AS `Product` LEFT JOIN `collections` AS `Collection` ON
(`Product`.`collection_id` = `Collection`.`id`) WHERE `Product`.`name`
LIKE 'aa'
I posted the model code already, but here is the controller code:
$this->set('products', $this->Product->find('all', array
('conditions'=>array('Product.name LIKE ' => $searchstring),
'contain' => array(
'Collection' => array(
'fields' => array('Collection.name', 'Collection.group_id',),
'Group' => array(
'fields' => array('Group.name',),
),
),
) )));
On Dec 16, 4:58 am, Tonu Tusk <[email protected]> wrote:
> Ok, well just so you're clear (I know I'm not always ;) ) the cake way
> of doing things is to return the dataset of all items that are related
> to what you ask for automatically (depending on the recursion level
> set)
> so just calling product's find method would automatically pull in all
> data from other models that you had setup as related to the
> product, ... recursing down to the models that are related to the
> models that are
> related to the product.
>
> The containable behaviour is there to define a subset of the
> relationships which you want to be included in the resulting dataset
> of a find call.
> This is useful in the short term to reduce the amount of unnecessary
> data that is being ripped from your db as well as memory usage etc,
> but is also good practice just to get the specific subset of data that
> you need for your task in hand as your models may change / expand in
> the future and if you
> are just doing "blind" find calls, what might not be a problem now
> with the size of data may turn into one in the future, so may as well
> do it properly to start with.
>
> To go off on a slight tangent...
> If the only models you had at the moment are your Product /
> Collection / Group, then it would work to just do a
> Product->find('all') and the dataset that was returned would be close
> to what you wanted.
> However, if you had not set out a precise subset of data to retrieve
> by "contain" or any other methods you could use, then in the future
> if
> you expanded your DB to have maybe comments and reviews related to
> each product, image models related to each product as well as any
> common attributes that you might want to relate to products, all of a
> sudden the blind Product->find('all') would be pulling in a hell of a
> lot more related data.
> The fact you were asking how to tailor the equivalent of a specific
> sql call suggests that you are already taking this into consideration,
> but it is always good to
> "try" and give insight into the cake way of doing things.
>
> Cake will return the datasets of the related models that you call a
> find to. You then pare down the dataset definition to what suits your
> needs. There is a subtle difference to the "defining the specifics of
> what you want cake to return" and
> "how to sculpt a current SQL call into cake language" but once your
> mindset "gets" the difference you should benefit from thinking a bit
> more cakelike and the code that ensues
>
> Oh yeah, and many people are strong advocates of the fat model,
> skinny controller idealogy / methodology.
> If your 'find' calls are getting quite specific, move the code to a
> spearate function in your model (enabling reuse as well as keeping
> your controller clean)
>
> Tangent over.
>
> I misread your original post which is why the code isn't working.
>
> Since the Group is another level of recursive relationship from the
> Product,
> 'Group' variable in the contain parameter should be nested within the
> Collection contain parameter (since in the
> semi-abstract relationship view of the situation, the Group model is
> accessible via the Collection model, not through a direct relationship
> with the Product model.
>
> try this
>
> 'contain' => array(
> 'Collection' => array(
> 'fields' => array('Collection.name', 'collection.group_id',),
> 'Group' => array(
> 'fields' => array('Group.name',),
> ),
> ),
> )
>
> On Dec 15, 2:43 pm, Todd McGrath <[email protected]> wrote:
>
> > Thanks. Looks like progress, but now error is:
>
> > Model "Product" is not associated with model "Group" [CORE/cake/libs/
> > model/behaviors/containable.php, line 317]
>
> > --
> > Product has one Group through Collection:
>
> > class Product extends AppModel {
>
> > var $name = 'Product';
> > var $actsAs = array('Containable');
> > var $belongsTo = array(
> > 'Collection' => array('className' => 'Collection',
> >
> > 'foreignKey' => 'collection_id',
> >
> > 'conditions' => '',
> > 'fields' =>
> > '',
> > 'order' =>
> > ''
> > ),
>
> > --
>
> > class Collection extends AppModel {
>
> > var $name = 'Collection';
> > var $order = 'Collection.name';
>
> > var $actsAs = array('Containable');
>
> > var $belongsTo = array(
> > 'Group' => array('className' => 'Group',
> >
> > 'foreignKey' => 'group_id',
> >
> > 'conditions' => '',
> > 'fields' =>
> > '',
> > 'order' =>
> > ''
> > )
> > );
>
> > Any other ideas?
>
> > On Dec 14, 6:06 pm, Tonu Tusk <[email protected]> wrote:
>
> > > Hi, you can only specify the fields for the model that you are callng
> > > the "find" method on in the 'fields' attribute in the parameter list
> > > passed to the method call.
>
> > > You need to specify the fields you want returned in the dataset
> > > controlled by the containable behaviour in the 'contain' variable
> > > itself.
>
> > > e.g in your parameter array to the find call you would do
>
> > > 'contain' => array('Collection' => array('fields' => array
> > > ('Collection.name', 'collection.group_id',)), 'Group' => array
> > > ('fields' => array('Group.name'))
>
> > > also make sure all your model relationships are setup and also the
> > > actsAs variable in the Product model has 'Containable' set.
>
> > > On Dec 14, 8:25 pm, Todd McGrath <[email protected]> wrote:
>
> > > > Hello,
>
> > > > Having trouble figuring out how to construct a query such as this:
>
> > > > "SELECT products.*, groups.* FROM products Inner Join collections ON
> > > > products.collection_id = collections.id Inner Join groups ON
> > > > collections.group_id = groups.id WHERE products.name LIKE '%" .
> > > > $searchstring . "'"
>
> > > > Products belongsTo Collections and Collections belongsTo Groups
>
> > > > I'm trying to use find all with conditions and fields and recursive,
> > > > but no luck. Example:
>
> > > > $this->set('products', $this->Product->find('all', array
> > > > ('contain' => array('Collection', 'Group'), 'conditions'=>array
> > > > ('Product.name LIKE ' => $searchstring), 'recursive'=>3, 'fields' =>
> > > > array('Product.name','Collection.name', 'Collection.group_id',
> > > > 'Collection.group_id','Group.name') )));
>
> > > > but, the error is:
> > > > Warning (512): SQL Error: 1054: Unknown column 'Group.name' in 'field
> > > > list' [CORE/cake/libs/model/datasources/dbo_source.php, line 512]
>
> > > > How can I obtain the Group field data through Collections when
> > > > querying Products?
>
> > > > Todd
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