relationship

Laravel hasOne through a pivot table

由 隐身守侯 提交于 2020-01-24 09:05:51
问题 So I have 2 models, User & Profile, the relationship is set up as follows: /** * User belongs to many Profile * * @return \Illuminate\Database\Eloquent\Relations\belongsToMany */ public function profiles() { return $this->belongsToMany('App\Models\Profile', 'user_profiles'); } I have 3 tables, users, profiles & user_profiles (the pivot table) I have a column in my users table called active_profile which gets populated with a profile id. How can I set up the relationship so that I can call

Rails 3 friendship model : how to ignore a friend request?

由 ﹥＞﹥吖頭↗ 提交于 2020-01-23 03:39:07
问题 I have the traditional friendship model: The user model has: has_many :friendships, :dependent => :destroy has_many :friends, :through => :friendships, :dependent => :destroy has_many :inverse_friendships, :class_name => "Friendship", :foreign_key => "friend_id", :dependent => :destroy has_many :inverse_friends, :through => :inverse_friendships, :source => :user, :dependent => :destroy I would like to define the status "friend" only if a friend request has been sent, and accepted by the other

How can I add, delete and get a favorite from product with polymorphic relationship, in Laravel 5.6?

由 只愿长相守 提交于 2020-01-21 20:09:08
问题 My product model like this : <?php ... class Product extends Model { ... protected $fillable = ['name','photo','description',...]; public function favorites(){ return $this->morphMany(Favorite::class, 'favoritable'); } } My favorite model like this : <?php ... class Favorite extends Model { ... protected $fillable = ['user_id', 'favoritable_id', 'favoritable_type']; public function favoritable() { return $this->morphTo(); } } My eloquent query laravel to add, delete and get like this : public

rails models for address books (company, person, address)

由 旧城冷巷雨未停 提交于 2020-01-17 01:42:29
问题 I want to create address-book-like set of models to represent company, person, location, etc. This looks like very typical address book, I wonder if somebody did it already with ruby on rails 3. The question appeared not (only) because of my laziness, but also because "best practice" approach is usually well-developed, have fewer pitfalls, etc. Currently I think about following models/fields: Company: name has_many :persons has_many :locations has_many :urls, :through => :urlcatalog the

Laravel belongs to throwing undefined error

由 别来无恙 提交于 2020-01-16 03:24:12
问题 I have 2 models. User: class User extends Eloquent implements UserInterface, RemindableInterface { protected $table = 'users'; public function group () { return $this->belongsTo('Group'); } } And Group: class Group extends Eloquent { protected $table = 'groups'; } The user table has a foreign key on the group column which references the id on the group table. Schema may help Schema::table('users', function ($table) { $table->foreign('group') ->references('id') ->on('groups') ->onDelete(

python Networkx绘图2

由 余生颓废 提交于 2020-01-15 23:21:20
参考Link： （3）重点链接： Examples-General-purpose and introductory examples for NetworkX. https://networkx.github.io/documentation/latest/auto_examples/index.html （4）python绘制随机网络图形 https://blog.csdn.net/u012369559/article/details/78289028 （5）python对网络图networkx进行社区检测和彩色绘图 https://blog.csdn.net/qq_19600291/article/details/102543036 （6）文本分析之制作网络关系图 Python https://www.sohu.com/a/136307045_116235 （3）Examples-General-purpose and introductory examples for NetworkX. （4）python绘制随机网络图形 #注：用erdos_renyi_graph(n,p)方法生成一个含有n个节点、以概率p连接的ER随机图，在本程序中以概率0.8连接20个节点中的每一对节点，完成图形。 import networkx as ne #导入建网络模型包，命名ne import

How to represent a categorized many-to-many database relationship where categories are specific to one side of the relationship

由 ＊爱你＆永不变心＊ 提交于 2020-01-14 14:03:13
问题 I'm working on building a database to manage project assignments, and the one part that's giving me particular trouble is the assignment of job titles to employees with for each project they are working on. Requirements An Employee can be on multiple Projects at a time A Project has multiple Employees on it A Project has multiple Job Titles An Employee works on a Project under exactly one of the Project's Job Titles Multiple Employees can work under the same Job Title in a Project I'm not

scala: how to model a basic parent-child relation

由 大城市里の小女人 提交于 2020-01-13 09:34:10
问题 I have a Brand class that has several products And in the product class I want to have a reference to the brand, like this: case class Brand(val name:String, val products: List[Product]) case class Product(val name: String, val brand: Brand) How can I poulate these classes??? I mean, I can't create a product unless I have a brand And I can't create the brand unless I have a list of Products (because Brand.products is a val) What would be the best way to model this kind of relation? 回答1: I

Calling an entity's setter for updating its column from a controller of another entity

由 烂漫一生 提交于 2020-01-07 09:05:11
问题 I need to update the Client table's budget column after inserting a new Budget into the database, but it doesn't. This is how I am doing inside of BudgetController::addAction() : if ($form->isValid()) { $manager->persist($form->getData()); $manager->flush(); $Client = $manager->getReference('PanelBundle:Client', $form['client_id']->getData()->getId()); $Client->setBudget($manager->getRepository('PanelBundle:Budget')->getLastId()); $this->addFlash('success', 'Novo orçamento adicionado');

Creating Relationships while avoiding ambiguities

由 丶灬走出姿态 提交于 2020-01-07 08:21:04
问题 I have a flat table like this, R# Cat SWN CWN CompBy ReqBy Department 1 A 1 1 Team A Team B Department 1 2 A 1 3 Team A Team B Department 1 3 B 1 3 Team A Team B Department 1 4 B 2 3 Team A Team C Department 1 5 B 2 3 Team D Team C Department 2 6 C 2 2 Team D Team C Department 2 R# indicates the RequestNumber, Cat# indicates the Category, SWN indicates the Submitted Week Number, CWN indicates the Completed Week Number, CompBy indicates Completed By, ReqBy Indicates Requested By, Department
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