has-many Questions
3
Solved
I've been playing around with STI and belongs_to / has_many relationships and I'm a bit confused.
I have a few questions based on a model configuration similar to:
class Parental < ActiveRecor...
Brezhnev asked 17/9, 2011 at 18:55
4
Hi following are my relations
User Model
public function loginlogout()
{
$this->HasMany("App\Models\LoginLogoutLogs");
}
and this is my LoginLogoutLogs Model
public function users()
{...
Corkscrew asked 30/10, 2017 at 8:29
9
Solved
How can I achieve the following? I have two models (blogs and readers) and a JOIN table that will allow me to have an N:M relationship between them:
class Blog < ActiveRecord::Base
has_many :b...
Papillose asked 24/11, 2008 at 22:56
4
Solved
I have setup a role based access controll system with the following models:
Role (as STI),
UserRole (global roles)
ProjectRole (project specific roles)
Assignment (Polymorphic with different r...
Consequently asked 4/3, 2012 at 15:31
3
Solved
I know that it will save associations when autosave: true as per https://api.rubyonrails.org/classes/ActiveRecord/AutosaveAssociation.html
I know that it will save associations that are construct...
Ollie asked 9/9, 2013 at 16:44
6
Solved
I have a event model. Events can have parent events, set from a column in the model (parent_event_id). I need to be able to do has_many :event on the model, so I can just do, for example, event.chi...
Seeress asked 13/9, 2013 at 17:20
4
Solved
In my User model I could have:
has_many :tasks
and in my Task model:
belongs_to :user
Then, supposing the foreign key 'user_id' was stored in the tasks table, I could use:
@user.tasks
My...
Filibeg asked 22/7, 2009 at 4:14
4
Solved
I'm new to testing and rails but i'm trying to get my TDD process down properly.
I was wondering if you use any sort of paradigm for testing has_many :through relationships? (or just has_many in ...
Sarcenet asked 19/10, 2010 at 23:50
8
Solved
I'm using Rails 5. I have the following model ...
class Order < ApplicationRecord
...
has_many :line_items, :dependent => :destroy
The LineItem model has an attribute, "discount_applied....
Willable asked 25/2, 2020 at 18:15
2
Solved
Ok, i have model A that is linked to many model B, so model A have a hasMany relationship to model B and model B has a belongsTo relationship to model A.
But, amongst all those B there is a partic...
Lawabiding asked 5/9, 2019 at 13:48
6
Solved
This seems fairly simple but I can't get it to turn up on Google.
If I have:
class City < ActiveRecord::Base
has_many :photos
end
class Photo < ActiveRecord::Base
belongs_to :city
...
Bergstrom asked 8/3, 2012 at 6:25
4
Solved
I'm not sure if my question is worded correctly.
I have three models: User, Item, and UserItem.
user has_many :user_items
user has_many :items, through :user_items
item has_many :user_items
item...
Repatriate asked 8/4, 2016 at 2:36
5
Solved
What is the "rails way" to efficiently grab all rows of a parent table along with a count of the number of children each row has?
I don't want to use counter_cache as I want to run these ...
Stanwood asked 28/4, 2009 at 3:48
3
This is my code for moving data from my old database:
class Old < ActiveRecord::Base
establish_connection :old_version
self.abstract_class = true
class Recipe < self
set_table_name :rec...
Uredo asked 10/4, 2012 at 5:43
3
Solved
Let's say I have the following classes
class SolarSystem < ActiveRecord::Base
has_many :planets
end
class Planet < ActiveRecord::Base
scope :life_supporting, where('distance_from_sun > ...
Ruthieruthless asked 24/7, 2012 at 17:53
3
Solved
I know how to work has_many :posts, dependent: :destroy. If User or something that has_many posts is destroyed, all belonging posts are also destroyed.
But what happens when Post model belongs_to ...
Issuance asked 6/1, 2016 at 2:41
2
I have associations between two models defined as below:
For Contact Model (in a separate file)
classMethods: {
associate: function (models){
Contact.belongsTo(models.User)
}
}
For User(in a...
Selfstyled asked 13/5, 2014 at 14:30
2
Solved
I have a serializer with a has_many association and I want to order the dependent model. For some reason I get an undefined method key?' error:
class API::ClientSerializer < ActiveModel::Serial...
Compromise asked 27/6, 2017 at 17:41
1
installed versions
ember-cli 2.14.2
ember-data 2.14.10
A little perspective:
I have a service called menu that performs store queries inside computed properties. One of these store queries is b...
Essie asked 24/8, 2017 at 19:25
2
Solved
is that possible to use direct table name in hasMany. for example
public function Permissions()
{
return $this->hasMany('TABLE NAME');
}
I have table named PERMISSION but don't have a model ...
2
I am stuck. I've been trying to figure out how to include the association changes (has_many, has_many through) on a model that has papertrail. I would like to call MyModel.versions.first.changeset ...
Applesauce asked 11/8, 2015 at 22:34
4
Solved
New to both Ruby and Rails but I'm book educated by now (which apparently means nothing, haha).
I've got two models, Event and User joined through a table EventUser
class User < ActiveRecord::...
Lawful asked 3/1, 2009 at 10:39
8
Solved
Relatively new to rails and trying to model a very simple family "tree" with a single Person model that has a name, gender, father_id and mother_id (2 parents). Below is basically what I want to do...
Burdine asked 21/11, 2008 at 1:51
3
Consider following models
class User < AR
has_many :resources
end
class Resource < AR
belongs_to :user
end
I have a requirement where the foreign key is saved after applying some funct...
Equivocate asked 30/8, 2016 at 20:4
3
Solved
When I use has_one it works perfectly, but not on the has_many. Here you can see that the object_id is different because it ran another SQL to fetch it again.
ruby-1.9.2-p290 :001 > e = Employ...
Sugary asked 4/10, 2011 at 21:21
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