CakePHP - Relationship Question - Posts.Child belongsTo User, How to define?

亡梦爱人 提交于 2019-12-13 06:08:48

问题


Below is a posts model, and as you can see I have a belongsTo relationship on each post, so that the user details are also retrieved with the post. I would also like the exact same behaviour for the Posts.Children (see the hasMany definition below).

QUESTION:

How do I also apply the belongsTo relationship to the Posts.Children ( Posts.Child belongsTo User )??

<?php
class Post extends AppModel {

    var $name = 'Post';

    var $belongsTo = array(
        'User' => array(
            'className' => 'User',
            'foreignKey' => 'post_owner',
          'fields' => array( "User.id" , "User.first_name" , "User.last_name" )
        )
    );

    // -=> 
    var $hasMany = array(
        'Child' => array(
            'className' => 'Post',
            'foreignKey' => 'parent_id',
        'conditions' => array( "Child.active" => "1" ),
        'limit' => '2',
        'order' => 'time DESC'
        )
    );
}
?>

And here is the PostsController Code which I am currently using:

class PostsController extends AppController {    
    var $helpers = array ('Html','Form');
    var $name = 'Posts';

    function index() {
        $conditions = array( "Post.parent_id" => "0" , "Post.active" => "1" );
        $this->set(     'posts', $this->Post->find('all',array(   'conditions'=>$conditions     ))   );
        debug(   $this->Post->find('all',array(   'conditions'=>$conditions  ))   );
}

"what's the output if you call debug($this->Post->Child); in the posts controller?" Here it is:

Post Object
(
    [name] => Post
    [hasMany] => Array
        (
            [Child] => Array
            (
                [className] => Post
                [foreignKey] => parent_id
                [conditions] => Array
                    (
                        [Child.active] => 1
                    )

                [fields] => 
                [order] => 
                [limit] => 
                [offset] => 
                [dependent] => 
                [exclusive] => 
                [finderQuery] => 
                [counterQuery] => 
            )

    )

[belongsTo] => Array
    (
        [User] => Array
            (
                [className] => User
                [foreignKey] => dom
                [fields] => Array
                    (
                        [0] => User.id
                        [1] => User.first_name
                        [2] => User.last_name
                    )

                [conditions] => 
                [order] => 
                [counterCache] => 
            )

    )

[useDbConfig] => default
[useTable] => posts
[displayField] => title
[id] => 
[data] => Array
    (
    )

[table] => posts
[primaryKey] => id
[_schema] => Array
    (
        [active] => Array
            (
                [type] => integer
                [null] => 
                [default] => 1
                [length] => 1
            )

        [id] => Array
            (
                [type] => integer
                [null] => 
                [default] => 
                [length] => 11
                [key] => primary
            )

        [parent_id] => Array
            (
                [type] => integer
                [null] => 
                [default] => 0
                [length] => 11
            )

        [time] => Array
            (
                [type] => integer
                [null] => 
                [default] => 0
                [length] => 11
            )

        [dom] => Array
            (
                [type] => integer
                [null] => 
                [default] => 
                [length] => 11
            )

        [sub] => Array
            (
                [type] => integer
                [null] => 
                [default] => 
                [length] => 11
            )

        [created] => Array
            (
                [type] => datetime
                [null] => 
                [default] => 
                [length] => 
            )

        [modified] => Array
            (
                [type] => datetime
                [null] => 
                [default] => 
                [length] => 
            )


        [text] => Array
            (
                [type] => string
                [null] => 
                [default] => 
                [length] => 4096
                [collate] => latin1_swedish_ci
                [charset] => latin1
            )

    )

[validate] => Array
    (
    )

[validationErrors] => Array
    (
    )

[tablePrefix] => 
[alias] => Child
[tableToModel] => Array
    (
        [posts] => Child
        [users] => User
    )

[logTransactions] => 
[cacheQueries] => 
[hasOne] => Array
    (
    )

[hasAndBelongsToMany] => Array
    (
    )

[actsAs] => 
[Behaviors] => BehaviorCollection Object
    (
        [modelName] => Child
        [_attached] => Array
            (
            )

        [_disabled] => Array
            (
            )

        [__methods] => Array
            (
            )

        [__mappedMethods] => Array
            (
            )

    )

[whitelist] => Array
    (
    )

[cacheSources] => 1
[findQueryType] => 
[recursive] => 1
[order] => 
[virtualFields] => Array
    (
    )

[__associationKeys] => Array
    (
        [belongsTo] => Array
            (
                [0] => className
                [1] => foreignKey
                [2] => conditions
                [3] => fields
                [4] => order
                [5] => counterCache
            )

        [hasOne] => Array
            (
                [0] => className
                [1] => foreignKey
                [2] => conditions
                [3] => fields
                [4] => order
                [5] => dependent
            )

        [hasMany] => Array
            (
                [0] => className
                [1] => foreignKey
                [2] => conditions
                [3] => fields
                [4] => order
                [5] => limit
                [6] => offset
                [7] => dependent
                [8] => exclusive
                [9] => finderQuery
                [10] => counterQuery
            )

        [hasAndBelongsToMany] => Array
            (
                [0] => className
                [1] => joinTable
                [2] => with
                [3] => foreignKey
                [4] => associationForeignKey
                [5] => conditions
                [6] => fields
                [7] => order
                [8] => limit
                [9] => offset
                [10] => unique
                [11] => finderQuery
                [12] => deleteQuery
                [13] => insertQuery
            )

    )

[__associations] => Array
    (
        [0] => belongsTo
        [1] => hasOne
        [2] => hasMany
        [3] => hasAndBelongsToMany
    )

[__backAssociation] => Array
    (
    )

[__insertID] => 
[__numRows] => 
[__affectedRows] => 
[_findMethods] => Array
    (
        [all] => 1
        [first] => 1
        [count] => 1
        [neighbors] => 1
        [list] => 1
        [threaded] => 1
    )

[User] => User Object
    (
        [name] => User
        [validate] => Array
            (
                [name] => Array
                    (
                        [rule] => Array
                            (
                                [0] => minLength
                                [1] => 4
                            )

                        [message] => Name has to be at least four characters
                    )

                [email] => Array
                    (
                        [rule] => Array
                            (
                                [0] => email
                            )

                        [message] => Please enter a valid email
                    )

                [username] => Array
                    (
                        [Username has to be at least four characters] => Array
                            (
                                [rule] => Array
                                    (
                                        [0] => minLength
                                        [1] => 4
                                    )

                            )

                        [This username is already taken, please try another] => Array
                            (
                                [rule] => isUnique
                            )

                    )

                [password] => Array
                    (
                        [Password cannot be empty] => Array
                            (
                                [rule] => Array
                                    (
                                        [0] => notEmpty
                                    )

                            )

                        [Password must be at least four characters] => Array
                            (
                                [rule] => Array
                                    (
                                        [0] => minLength
                                        [1] => 4
                                    )

                            )

                        [Passwords must match] => Array
                            (
                                [rule] => Array
                                    (
                                        [0] => passwordCompare
                                        [1] => password_confirm
                                    )

                            )

                    )

            )

        [useDbConfig] => default
        [useTable] => users
        [displayField] => id
        [id] => 
        [data] => Array
            (
            )

        [table] => users
        [primaryKey] => id
        [_schema] => Array
            (
                [id] => Array
                    (
                        [type] => integer
                        [null] => 
                        [default] => 
                        [length] => 11
                        [key] => primary
                    )

                [type] => Array
                    (
                        [type] => boolean
                        [null] => 
                        [default] => 1
                        [length] => 1
                    )

                [is_active] => Array
                    (
                        [type] => boolean
                        [null] => 
                        [default] => 1
                        [length] => 1
                    )



                [gender] => Array
                    (
                        [type] => boolean
                        [null] => 
                        [default] => 1
                        [length] => 1
                    )

                [first_name] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 200
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

                [last_name] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 200
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

                [email] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 200
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

                [username] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 200
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

                [password] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 200
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

                [created] => Array
                    (
                        [type] => datetime
                        [null] => 
                        [default] => 
                        [length] => 
                    )

                [modified] => Array
                    (
                        [type] => datetime
                        [null] => 
                        [default] => 
                        [length] => 
                    )

                [bio] => Array
                    (
                        [type] => string
                        [null] => 
                        [default] => 
                        [length] => 2048
                        [collate] => latin1_swedish_ci
                        [charset] => latin1
                    )

            )

        [validationErrors] => Array
            (
            )

        [tablePrefix] => 
        [alias] => User
        [tableToModel] => Array
            (
                [users] => User
            )

        [logTransactions] => 
        [cacheQueries] => 
        [belongsTo] => Array
            (
            )

        [hasOne] => Array
            (
            )

        [hasMany] => Array
            (
            )

        [hasAndBelongsToMany] => Array
            (
            )

        [actsAs] => 
        [Behaviors] => BehaviorCollection Object
            (
                [modelName] => User
                [_attached] => Array
                    (
                    )

                [_disabled] => Array
                    (
                    )

                [__methods] => Array
                    (
                    )

                [__mappedMethods] => Array
                    (
                    )

            )

        [whitelist] => Array
            (
            )

        [cacheSources] => 1
        [findQueryType] => 
        [recursive] => 1
        [order] => 
        [virtualFields] => Array
            (
            )

        [__associationKeys] => Array
            (
                [belongsTo] => Array
                    (
                        [0] => className
                        [1] => foreignKey
                        [2] => conditions
                        [3] => fields
                        [4] => order
                        [5] => counterCache
                    )

                [hasOne] => Array
                    (
                        [0] => className
                        [1] => foreignKey
                        [2] => conditions
                        [3] => fields
                        [4] => order
                        [5] => dependent
                    )

                [hasMany] => Array
                    (
                        [0] => className
                        [1] => foreignKey
                        [2] => conditions
                        [3] => fields
                        [4] => order
                        [5] => limit
                        [6] => offset
                        [7] => dependent
                        [8] => exclusive
                        [9] => finderQuery
                        [10] => counterQuery
                    )

                [hasAndBelongsToMany] => Array
                    (
                        [0] => className
                        [1] => joinTable
                        [2] => with
                        [3] => foreignKey
                        [4] => associationForeignKey
                        [5] => conditions
                        [6] => fields
                        [7] => order
                        [8] => limit
                        [9] => offset
                        [10] => unique
                        [11] => finderQuery
                        [12] => deleteQuery
                        [13] => insertQuery
                    )

            )

        [__associations] => Array
            (
                [0] => belongsTo
                [1] => hasOne
                [2] => hasMany
                [3] => hasAndBelongsToMany
            )

        [__backAssociation] => Array
            (
            )

        [__insertID] => 
        [__numRows] => 
        [__affectedRows] => 
        [_findMethods] => Array
            (
                [all] => 1
                [first] => 1
                [count] => 1
                [neighbors] => 1
                [list] => 1
                [threaded] => 1
            )

        )

    [Child] => Post Object
 *RECURSION*
)

回答1:


You put it in the Children model.

var $belongsTo = array( 'Post' );

By the way, what you posted is the model, not the controller. Hopefully it's just a typo and you have that in the correct place.

It's also unclear if you call the model "Child" or "Children". The $hasMany relationship is uses Children, but in the question you say Posts.Child -- do you have the inflection set up correctly?

EDIT: I may have misunderstood the question: if you want a hasMany relationship, you already have that. The problem is either in the way you retrieve the data or in the relationship definition.




回答2:


you don't have to do anything, a Child is also a Post, so also belongsTo a User. (And you should name it "Child" not "Children")

With containable, try this: $this->Post->find('all',array('contain'=>array('Child'=>array('User'))));



来源:https://stackoverflow.com/questions/6983151/cakephp-relationship-question-posts-child-belongsto-user-how-to-define

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