All Questions
Tagged with has-many model-associations
26 questions
0
votes
1
answer
39
views
Rails association getting complex to understand
I am bit old but still new to Rails and in my learning orocess I have got stucked in a point where I can't figure out how can I make association between two entities.
So here is the background of app....
0
votes
1
answer
339
views
How to correctly apply a has_many relationship with an order by in Ruby on Rails 6
I am creating a User model in Rails 6 to mirror a model that exists in a separate project.
There is a has_many relationship that is causing some problems.
class User < ApplicationRecord
...
0
votes
3
answers
102
views
Rails associations doesn't save to db
I have this set up, but noting gets saved to the db when I try to save a practitioner.
The tables are users, clinics and practitioners. The user should be able to create multiple clinics and each ...
- 71
0
votes
2
answers
35
views
how to use has many through with condition in rails
I have following models in rails.
class User < ApplicationRecord
has_many :vendors
has_many :vendoritems, through: :vendors
has_many :products
end
class Vendorcode < ApplicationRecord
...
- 1,709
0
votes
1
answer
232
views
How do I link to parent association in rails 5?
I am trying to do what this person did but with rails 5.
In my app I have two controllers and three models.
My two controllers are OrdersController and ListingsController. And my three models are ...
- 84
0
votes
3
answers
1k
views
Find and destroy dependent records
Over a period of time my Rails app has had various rewrites, and in some cases incorrect model associations.
Currently my User model has_many :posts and its destroy method correctly removes all ...
- 2,854
1
vote
1
answer
2k
views
multiple select for hasMany association in CakePHP 3
I have two tables seller_businesses and seller_business_categories. and their association is as follows
SellerBusinessesTable.php
$this->hasMany('SellerBusinessCategories', [
'...
- 131
0
votes
3
answers
932
views
how to associate two models using has_many and belongs_to ruby on rails
I have generated two models tour and tourcategories in my application. Now I want to associate these two models using has_many and belongs_to. Where tour can relate with single tourcategory but ...
4
votes
1
answer
1k
views
List all associations as links in active admin
Is it possible in active admin to list all of the has_many associations of my record as links?
The code should look something like:
column "belongs to" do |b|
b.associations.map { |a| link_to(a....
- 8,987
0
votes
0
answers
385
views
missing FROM-clause entry for table rails custom model association
I need to create custom association for one of my projects. I have provided custom class name and foreign key in model but still getting the error. Here is my code:
Comment Model:
class Comment < ...
- 558
2
votes
2
answers
108
views
Rails + MySQL - loading data from 3 tables with a specific format (very slow "has_many" relation)
I have this structure of tables:
users
id | name
1 | John
2 | Peter
3 | Claire
services
id | name
1 | home
2 | garden
3 | music
user_services
id | user_id | services_id
1 | 1 | 3
2 ...
- 48.3k
1
vote
3
answers
69
views
Has many through relationship in rails
I am using facebook api to fetch users from fb.
I want to store the users in my model User
I am using has many through relationship to store users
User model relationship I have in my user model.
...
- 749
0
votes
0
answers
317
views
find doesn't return associated model data cakePHP
models Question and Answer
class Question extends AppModel {
public $name = "Question";
public $useTable = "questions";
public $primaryKey = 'question_id';
public $hasMany = array(
...
2
votes
3
answers
299
views
Ruby on Rails: finding a model instance from a different controller
Currently I have a has_many and belongs_to association between a Project model and a Invitation model. I have a form_form invitation in the show action of the projects controller.
projects/show.html....
- 305
0
votes
2
answers
995
views
Creating hasMany associations in Sencha Touch 2
I'm trying to create a simple model association in Sencha Touch 2.3.1.
Basically I want to have a store of coupons, arranged in categories. So every category hasMany coupons.
My data is currently ...
- 954
0
votes
1
answer
1k
views
how to write a condition for has_many association that joins two tables?
I have a user model:
class User < ActiveRecord::Base
has_many :profile_label_values
belongs_to :company
end
a profile label value model:
class profileLabelValue < ActiveRecord::Base
...
- 1,131
0
votes
1
answer
443
views
How does this cakephp scaffold know to display the name and not the primary key id?
I am new to cakephp and just created a basic blog using scaffolding. There are two models: User and Post. When the posts are listed, it lists the user's name, which is not the primary key. I am not ...
- 4,667
0
votes
2
answers
295
views
Not sure of my user/location association with Rails 4
I created a User and a Location models (and a Product Model too, but one problem at a time), and as I was playing with the console, I was surprised by some of the results.
Models
Class User < ...
- 1,054
0
votes
1
answer
483
views
Referencing calling instance variable when extending has_many
I have a model called Project that has many Proposals.
The Project model has an attribute called winning_proposal_id
Right now I have something like this to find the winning proposal as well as a ...
- 1,499
2
votes
1
answer
317
views
Rails associations for a model 'owned' by many Users
I have a simple rails app that functions as a cms for a digital signage application.
In this app, there will be a pool of predefined styles that I want to offer to all users.
Every style includes a ...
- 454
4
votes
1
answer
364
views
How do I cancel a save in before_add association callbacks?
I'm trying to cancel the save (gracefully) of a has_many element if is repeated. This is what I mean:
class AdmininstratorRole < ActiveRecord::Base
has_many :permissions, before_add: :...
- 9,570
1
vote
1
answer
1k
views
How to properly implement an association of two models/objects via the seeds.rb in Rails?
So, here is the deal: I have two models, a Player and a Team. Every team has_many players and every player belongs_to a team. The code (omitting a few unnecessary atributes from the player model):
...
- 1,436
0
votes
1
answer
2k
views
Has many :through association not found
I have two models that can have tags added to them.
Player
Ticket
and I have a Tag model which belongs to both so I have two join models
tag_ticket
tag_player
I am getting a Could not find the ...
- 6,653
0
votes
2
answers
113
views
How do you get the names of models that have MyObject has_many of?
Using Ruby (1.8.7) and Rails (2.3.8)
doing myObject.attributes gives you a hash of attribute to value.
lets say I have the scenario:
class MyObject
has_many :other_objects
class OtherObject
...
- 65k
1
vote
2
answers
203
views
Problems with a has_many - belongs_to association
My data is basically Gallery(s) have many Picture(s), and Picture(s) belong_to a gallery. the pictures table has the foreign_key 'gallery_id'.
Although I`ve used has_many and belongs_to associations ...
- 8,079
0
votes
2
answers
137
views
Ruby on Rails: has_many referential --which model objects does it own?
I am new to Rails and finished Michael Hartl's "Ruby on Rails 3 Tutorial". Although the book teaches me a lot, I find this puzzle I don't understand.
To preview the puzzle, that is, I don't ...
- 311