associations

问题 As the title says, how can i generate the default mongoid.yml config file on Rail 2.3.5? I try to use the ´rails generate mongoid:config´ command but it just generates a new app. And also, I would like to use has_many in mongoid without embedding the associated model in the same field. I would like them to be in separate fields and associated through a *_id "column". Is that possible? 回答1: You can't. The master branch of MongoID is only Rails 3 compatible. If you want use mongoID with Rails 2

问题 I have a problem with a checkbox in Rails: I have two models, User and authorized_users, with the following association: class AuthorizedUser < ActiveRecord::Base has_one :user, as => :useraccount and: class User < ActiveRecord::Base belongs_to :useraccount, :polymorphic => true, :dependant => :destroy In the "edit" view of the User I want a checkbox for cheking if the Authorized_user should recieve an email (true) or not (false): <%= check_box(:authorized_user, :sendEmail, options = {

问题 I have two entites Order oneToMany: statuses: targetEntity: \Status mappedBy: order Status manyToOne: order: targetEntity: \Order inversedBy: status fields: code: type:integer As you can see - one order can have more that one status at a time (statuses like 'has been shipped', 'has been paid for etc.'). I want to write a query that fetch all my Orders that do NOT have a status of 6. I'm finding it hard to get my head round this. Assume that I have three orders. The all have a status of '1'

问题 I have gathered a set of transactions in a CSV file of the format: {Pierre, lait, oeuf, beurre, pain} {Paul, mange du pain,jambon, lait} {Jacques, oeuf, va chez la crémière, pain, voiture} I plan to do a simple association rule analysis, but first I want to exclude items from each transactions which do not belong to ReferenceSet = {lait, oeuf, beurre, pain} . Thus my resulting dataset would be, in my example : {Pierre, lait, oeuf, beurre, pain} {Paul,lait} {Jacques, oeuf, pain,} I'm sure this

问题 I'm just diving into Datamapper (and Sinatra) and have a question about associations. Below are some models I have. This is what I want to implemented. I'm having an issue with Workoutitems and Workout. Workout will be managed separately, but Workoutitems has a single workout associated with each row. Workout - just a list of types of workouts (run, lift, situps, etc) Selected workout - this is the name of a set of workouts, along with notes by the user and trainer. It has a collection of N

问题 I'm just diving into Datamapper (and Sinatra) and have a question about associations. Below are some models I have. This is what I want to implemented. I'm having an issue with Workoutitems and Workout. Workout will be managed separately, but Workoutitems has a single workout associated with each row. Workout - just a list of types of workouts (run, lift, situps, etc) Selected workout - this is the name of a set of workouts, along with notes by the user and trainer. It has a collection of N

问题 I have the following models: class User < ActiveRecord::Base extend FriendlyId friendly_id :first_name, :use => :slugged has_one :professor after_create :create_professor def create_professor self.professor = Professor.create end end class Professor < ActiveRecord::Base extend FriendlyId friendly_id :first_name, :use => :slugged belongs_to :user def first_name user.first_name end end At the time that create_professor is called and therefore the execution passes to the Professor model ( self

问题 Are there any implications or gotchas to passing in a class instead of a string when defining an association? belongs_to :owner, class_name: User As opposed to: belongs_to :owner, class_name: "User" 回答1: The class may not be loaded yet in which case you'll get a NameError: uninitialized constant User . You're supposed to use "User" for this reason, as implied by the option name: :class_name , not :class . 回答2: In rare case I encounter some random errors when using classes (User) instead of

问题 This is probably silly simple but I can't find an example anywhere. I have two factories: FactoryGirl.define do factory :profile do user title "director" bio "I am very good at things" linked_in "http://my.linkedin.profile.com" website "www.mysite.com" city "London" end end FactoryGirl.define do factory :user do |u| u.first_name {Faker::Name.first_name} u.last_name {Faker::Name.last_name} company 'National Stock Exchange' u.email {Faker::Internet.email} end end What I want to do is override

问题 What I have: The markers was created by a form submission, the form contains a postcode input. The below javascript will take this postcode and display as markers on google map. (this is a different page) page1.php (code below)I have a php array, this array contains all infoWindow data and the javascript is to create map, markers and inforwindows. <?php .............. $info= array(); foreach($details as $d) { $info[] = "<div id='infoData'>".$d['name'].$d['quantity']."<button id='details'