Of our relationship, we call the using method when defining the relationship.Ĭustom many-to-many pivot model extends the Illuminate\Database\Eloquent\Relations\Pivot class,įor custom polymorphic many-to-many pivot models extend the Illuminate\Database\Eloquent\Relations\MorphPivot class.Įxample: - we define a Role that uses a custom RoleUser pivot model: belongsToMany('App\User')->using('App\RoleUser') To define a custom model for representing the intermediate table return $this->belongsToMany('App\Role', 'role_user', 'user_id', 'role_id') Defining Custom Intermediate Table Models Third argument, which is defining the relationship.
We also customize the column names of the keys on the table by passing additional arguments to the belongsToMany method. Table, and Eloquent will join the two related model names in the alphabeticalįree to override this convention as a second argument to the belongsToMany method: return $this->belongsToMany(‘App\Role’, ‘role_user’) We call the roles method to continue queryĬonstraints onto the relationship $roles = App\User::find(1)->roles()->orderBy('name')->get() The relationship is specified, we access the user`s roles by using the roles dynamic property: $user = App\User::find(1) Let`s define the roles method on our User model: belongsToMany('App\Role') Writing a method which will return the result of the belongsToMany method. Many-to-many relationships are specified by Related model names, and it contains the user_id and role_id columns. The role_user table is derived from the alphabetical order of the Specify the many-to-many relationship, the three database tables which are as Many-to-many relations are complicated than hasOne and hasMany relationships. Return $this->hasMany('App\Comment', 'foreign_key', 'local_key') Many to Many
return $this->hasMany('App\Comment', 'foreign_key') Passing an additional arguments to the hasMany method. The hasOne method, we also override the foreign and local keys by Method and continuing the chain conditions onto the query. We can add constraints to the comments by easily call the comments The relationship has been specified we canĮnter the collection of the comments by entering the comments correctly.Įloquent provides “dynamic properties”, weĬan enter relationship methods as they defined as the properties on the model $comments = App\Post::find(1)->comments One-to-many relationships are defined by placing our Eloquent model hasMany('App\Comment') Įloquent will automatically decide the properĮloquent will assume the foreign key on the Comment model as post_id. Return $this->belongsTo('App\User', 'foreign_key') Ī one-to-many relationship defines relationships where a single model owns any amount of the other models. The foreign key on the Phone model is not user_id, we pass a custom key as the The above example, Eloquent will try to match the user_id from the Phone model to an id on the Owner model.Ĭonsider as the default foreign key name by the name of the relationship method return $this->hasOne(‘App\Phone’, ‘foreign_key’, ‘local_key’) ĭefine the inverse of a hasOne relationship by using the belongsTo method: class Phone extends Owner We pass the third argument to the hasOne method defining our custom key.
To use the relationship of a value other than The foreign key should have a value matching return $this->hasOne(‘App\Phone’, ‘foreign_key’)
We pass a second argument to the hasOne method. In that case, the Phone model is automatically assumed to Relationship methods as if they were properties defined on the model: $phone = User::find(1)->phone Įloquent consider as the foreign key of the relationship, which is based on the model name. The relationship is specified we retrieve the related record by using Method is the name which is passed as the first argument, it is a related Method and return its result: class Phone extends Owner For defining these relationships, we are going to place a phone method on the owner model. It supports some different types of relationship, which are asĮloquent relationships are specified as a method on our Eloquent model classes.Įloquent models relationships also serve as powerful query builders,ĭefining relationships as a method, provides powerful method chaining and queryĮxample: $user->posts()->where(‘active’, 10)->get() One to OneĪ one to one relationships is an essential relation. Eloquent manages and work with easy relationships. Eloquent Relationships Laravel: Database tables are related to one another.
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