eloquent

问题 I'm working on a Laravel 5.2 project and I'm using Eloquent models, but I'm not sure how to approach to aggregation features. Let's say I have Product and Price models and a hasMany relationship, so a product can have multiple prices. Now, in my Product model I'd like a function that will give me an average price of the product. I found 2 ways to get the same result: 1.) Eloquent aggregation public function avg_price() { return $this->prices()->avg('price'); } 2.) MySql aggregation public

问题 There are many items in the Items table and there is an expired date column in the items table. I just want to get a push notification every day before each items going expire one date before (Expire dates are different to each other and can have one expire date to multuple items). im new to laravel. Please help me. 回答1: This can be simply done with Laravel task scheduling You need to create a custom artisan command like php artisan make:command SendItemExpiryEmailsToAdmin Under App\Console

问题 I am fairly new to laravel and eloquent. I have 2 tables threads and messages you can see the structure in the links below: threads messages Now my goals is to query only the threads from table threads that have the same user_id in the messages table as the logged in user . Is there a way to do this via eloquent or do I have to write a query for this? I currently get all the threads like this: $thread = Thread::findOrFail($id); But this gives security issues since you can go to any thread if

问题 I can think of several ad-hoc ways to do this, but I'm really looking for a 'best practices' type of solution. I have 3 tables involved - users (user_id) - usages ('user_id', 'provider_id', 'nurse_id', 'patient_id') - usage_alerts ('usage_id') Im trying to eager load alerts using hasManyThrough() based on a user's role. The user_id field is agnostic, and can apply to any role, so merging and filtering needs to take place. Using $this->hasManyThrough('UsageAlert', 'Usage')->get() will return a

问题 I have following table Schema::create('jokes_categories', function(Blueprint $table) { $table->increments('id'); $table->string('name'); $table->string('is_active'); $table->timestamps(); }); Schema::create('jokes', function(Blueprint $table) { $table->increments('id'); $table->string('content', 200)->unique();; $table->enum('is_active', array('Y', 'N')); $table->integer('category_id')->unsigned(); $table->foreign('category_id')->references('id')->on('jokes_categories'); $table->timestamps();

问题 I have following table Schema::create('jokes_categories', function(Blueprint $table) { $table->increments('id'); $table->string('name'); $table->string('is_active'); $table->timestamps(); }); Schema::create('jokes', function(Blueprint $table) { $table->increments('id'); $table->string('content', 200)->unique();; $table->enum('is_active', array('Y', 'N')); $table->integer('category_id')->unsigned(); $table->foreign('category_id')->references('id')->on('jokes_categories'); $table->timestamps();

问题 I'm trying save a register in my MySQL database using Eloquent of Laravel 5 I edited database information in .env file, localized in my system root path, and in config/database.php maintain 'default' => 'mysql' and other mysql connection information (it using env('DB_DATABASE', 'forge') for get informations) I can use Migration , but when I trying save register using function save() of my Model : $newClient = new Client; $newClient->name = "John"; $newClient->save(); It will occur the

问题 In laravel, I have 3 table User // for Authentication and Create Another User Once logged in Expense Shop My Purpose- I want user can register and Also, can create another user when they logged in And Can assign user to another Shop as they want.. And Only User in the Same Shop Can see their Expense .. // My User Table <pre> Schema::create('users', function (Blueprint $table) { $table->bigIncrements('id'); $table->unsignedBigInteger('shop_id')->nullable(); $table->unsignedBigInteger('user_id'

问题 I built a many-to-many relationship between users as friends through a pivot table. They have to have different foreign keys in the pivot ( friends ) table, user_from_id , user_to_id . In the User model, I define two relationship: public function friends_from() { return $this->belongsToMany('App\User,'friends', 'user_from_id`, `user_to_id`); } ... and friends_to symmetrically, which works fine. But it still makes it hard to consolidate just all "my friends. I thought I found a really clever

问题 Lets say i have a model called 'manufacturer' and this model has one to many relation with another model 'vehicle'. Now i dont want to let users delete a manufacturer if there are any vehicles associated with this model. //In Manufacturer model public function vehicles() { return $this->hasMany('Vehicle'); } And in the repository/controller i have another method to check for it. public function checkAssociatedVehicles($id) { return Manufacturer::with('vehicles')->find($id)->toJson(); } This