查询存在的关联关系,还有对应的whereDoesntHave,查询不存在的关联关系,像下面这样: // 获取发布文章标题中有first的用户 $users= User::whereHas('posts...function ($query) { $query- where('title', 'like', '%first%'); })- get(); 结果会查找发布过文章标题包含first的部分用户,有筛选功能whereHas....
For example, imagine you want to retrieve all blog posts that don't have any comments. To do so, you may pass the name of the relationship to the doesntHave method:$posts = App\Post::doesntHave('comments')->get();If you need even more power, you may use the whereDoesntHave method...
public function order() { return $this->belongsToMany('Order')->withTrashed(); } In my scenario I've Customer models that have n Devices // Relation 1 to n from Customer model to Device model public function devices() { return $this->hasMany('App\Device')->withTrashed(); } Note I...
$count = Flight::where('active', 1)->count(); $max = Flight::where('active', 1)->max('price');Inserting & Updating ModelsInsertsOf course, when using Eloquent, we don't only need to retrieve models from the database. We also need to insert new records. Thankfully, Eloquent makes...
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Ok, so for the example in the README the Message model would have a relation named something like participants, that returns a query with ->whereIn('id', [$sender, $receiver])? Maybe something like this: public function participants(): BelongsToMerged { return $this->belongsToMerged(User...
$user=User::where('username','=','michele')->first();// role attach alias$user->attachRole($admin);// parameter can be an Role object, array, or id// or eloquent's original technique$user->roles()->attach($admin->id);// id only ...
I can't seem to figure out where I've gone wrong. Improvement of code will be a bonus. Thank you! I have two models, Conversations and Messages. These are the tables. I intentionally left out the timestamp columns of both tables for this question's purpose. Con...
The task references the 'number' field in job via it's 'job_number' field and job doesn't contain any reference to task (as a job can have many tasks) So how do I get the title of a tasks job without getting the N+1 error?
Then I will find the alternate option with WhereHas but that is not a proper way to do it. Sorry, something went wrong. Post::query() ->withCount(['upvotes'=>function()use(&$query) {$query=$builder; }, ]) ->setBindings($query->getBindings(),'where') ...