model

问题 I use MongoDB as database in my Rails application with MongoID gem. I want to call helper method from model with n aafter_create callback method. How is it possible? My model code is: class Department include ApplicationHelper after_create :create_news private def create_news @user = ApplicationHelper.get_current_users end end And my helper code is: module ApplicationHelper def get_current_users current_user end end When I create new department then following error occur. undefined method

问题 I am trying to use FolderListModel, according to this example like this: ListView { anchors.fill: parent FolderListModel { id: foldermodel folder: "C:/Qt/Projects/" showDirs: true showDotAndDotDot: true nameFilters: ["*"] sortField : "Name" } Component { id: filedelegate Text { text: fileName } } model: foldermodel delegate: filedelegate } i want to show all the files/directories under the base directory, in a recursive way. does any one have an idea how to do that? 回答1: It seems that you

问题 i'm using codeigniter for my project and i have this class model which i call Genesis which looks like this: class Genesis_model extends CI_Model { function __construct() { parent::__construct(); } function get() { return 'human soul'; } } and i have another model, stored in the same directory, which extends Genesis_model class Human_model extends Genesis_model { function __construct() { parent::__construct(); } function get_human() { return $this->get(); } } Human_model is used by Human

问题 Apologies if this is a slightly noob question, but looking to clarify my thoughts on this. I have a model that can EITHER belong to one model, or another. For example: Let's say I have a Team model and I have a Member model, and both of those models can have one BankAccount. class Team has_many :members has_one :bank_account end class Member belongs_to :team has_one :bank_account end class BankAccount belongs_to :team, :member end To me, the above makes sense, but I'd love to clarify this

问题 My application has the following models: App.Store = DS.Store.extend({ revision: 11, adapter: 'DS.FixtureAdapter' }); App.List = DS.Model.extend({ name: DS.attr('string'), users: DS.hasMany('App.User'), tweetsUnread: function(){ ///////////////////////////////////////// // Code to dynamically calculate the sum // of tweetsUnread property of all // App.User that are related to this list ///////////////////////////////////////// } }); App.User = DS.Model.extend({ screenName: DS.attr('string'),

问题 Assume i have this model public partial class Todo { public int id { get; set; } public string content { get; set; } public bool done { get; set; } } And i send this as json data to my controller as a patch request. This is mearly the action of toggeling a checkbox. I think it makes sence that i only want to sent that to my server, and not the entire model. { "id":1, "done" : true } What does my WebApi controller need to look like in order to correctly process this, simple, json patch request

问题 Is there a way to load a single entity of a Backbone collection (from the server)? Backbone.Collection.extend({ url: '/rest/product' }); The following code can load the entire collection with a collection.fetch() but how to load a single model? Backbone's documentation says clearly that GET can be done /collection[/id] but not how. 回答1: While we set url:"api/user" for the collection, the equivalent for the model is urlRoot:"api/user" this will make backbone automatically append the /id when

问题 What I mean is if I have two models, connected by a has_and_belongs_to_many association, can I store other data in the join table for each association? That is, the extra data would not be part of a single record in either table, but instead of the connection between them. My actual models are as follows: class Part < ActiveRecord::Base has_and_belongs_to_many :assemblies has_and_belongs_to_many :packages belongs_to :user validates :name, :user_id, :presence => true end class Package <

问题 I have the following 2 models class Sport < ActiveRecord::Base has_many :charts, order: "sortWeight ASC" has_one :product, :as => :productable accepts_nested_attributes_for :product, :allow_destroy => true end class Product < ActiveRecord::Base belongs_to :category belongs_to :productable, :polymorphic => true end A sport can't exist without the product, so in my sports_controller.rb I had: def new @sport = Sport.new @sport.product = Product.new ... end I tried to move the creation of the

问题 I have the following 2 models class Sport < ActiveRecord::Base has_many :charts, order: "sortWeight ASC" has_one :product, :as => :productable accepts_nested_attributes_for :product, :allow_destroy => true end class Product < ActiveRecord::Base belongs_to :category belongs_to :productable, :polymorphic => true end A sport can't exist without the product, so in my sports_controller.rb I had: def new @sport = Sport.new @sport.product = Product.new ... end I tried to move the creation of the