Sorry for the fairly general question but I am looking to find out what would be the best way to implement a job application system in rails.
What I currently have is a user model and job model. What I would like to happen is that when a user submits an application for the job, most likely through a seperate application model, the user who posted the job will receive the application in their "applications area" and will also receive an email to the job owner's email address.
Is the best way to set this up to associate applications with users through jobs? Also would I need a seperate database table to handle the application or would it be possible to just set this up using Actionmailer?
Any help would be much appreciated! Thanks!
Sounds like a pretty straightforward has_many through association
class User < ActiveRecord::Base
has_many :applications
has_many :jobs, :through => :applications
end
class Application < ActiveRecord::Base
belongs_to :user
belongs_to :job
end
class Job < ActiveRecord::Base
has_many :applications
has_many :users, :through => :applications
end
Then in their application area you can just query user.jobs or user.applications depending on which you want to display.
Related
I'm creating an app that has a User and a Plugin model. A user can have multiple plugins and a plugin can belong to multiple users, which I've implemented using a junction table.
class Plugin < ActiveRecord::Base
has_many :user_plugins
has_many :users, through: :user_plugins
end
class User < ActiveRecord::Base
has_many :user_plugins
has_many :plugins, through: :user_plugins
end
class UserPlugins < ActiveRecord::Base
belongs_to :user
belongs_to :plugin
end
However, I then want to store arbitrary data for each user plugin (for example, things like api keys, options etc that can differ for each plugin.).
My initial approach was to have a user_plugins_options that joined on user_plugins, but I can't seem to get this to work correctly.
class UserPluginOptions < ActiveRecord::Base
belongs_to :user_plugins
end
My question, how should I go about approaching this to best work with ActiveRecord?
I think you misnamed your class, as the table is user_plugins but the model is UserPlugin. It’s plausible you are running into issues because of this.
Agree with Alex. Why don’t you create a json field on UserPlugin called options and keep a hash of plugin specific values here.
If you must have another table, you should add a has_one :user_plugin_option to your UserPlugin
I'm developing an application where I have several profiles, company profiles and jobs.
The company can post a job, but I can't find a way where a Profile can apply for one job.
I need to associate the job with every profile that applied to it. I guess I would have to create a column on my Job so I can list every ID that applied for that job, but I don't know how to start doing that.
Any ideas?
Thanks in advance
Assuming Profiles can apply for more than one job, you could setup your associations up like this:
class CompanyProfile
has_many :jobs, dependent: :destroy
end
class Job
belongs_to :company_profile
has_many :applications, dependent: :destroy
end
class Application
belongs_to :profile
belongs_to :job
end
class Profile
has_many :applications, dependent: :destroy
end
I think this is very much open to discussion though and it also depends what you want your app to be able to do; there might be scope for some sort of :through relationship.
I am trying to implement a resume feature and I was wondering the best practice for handling it. Lets assume a user has 2 pieces to a resume, education and work experience, and this is constant among all users. Then under each I want to save titles of things they've done (eg. Attended school at ______, worked at ________, project doing _______). Within these I want to save a description of that specific activity. What would be the best practice for implementing this?
So I need some association like: a user has_many experiences. An experience has_many titles. A title has_many descriptions. I also need to make the title of the experience is associated with the correct header (education or work experience).
I'm still pretty new to rails, and I'm sure there is a much easier and intuitive way to do this. Thanks for the help!
You can try these simple models structure for
class User < ActiveRecord::Base
has_many :locations
has_many :projects, through: experience_projects
end
class Location < ActiveRecord::Base
belongs_to :user
end
class Experience < ActiveRecord::Base
#experiences table should contain title and descriptions
belongs_to :user
has_many :projects, through: experience_projects
end
Now Join model if you do not require this intervention model you can directly use has_and_belongs_to_many
class ExperienceProject < ActiveRecord::Base
belongs_to :user
belongs_to :experience
end
I'm building a Rails app to allow one user to request support from a group.
Class User
has_many :requests
Class Request
belongs_to :users
Currently, the user clicks on different links to send the request to a different subgroup.
I'd like to allow further customization by letting the user select/deselect people.
Do I need an association to make this happen? Something like...
Class User
has_many :sent_requests, class_name 'Request'
has_many :received_requests
has_many :requests, :through received_requests
Class Request
belongs_to :client, class_name 'User'
has_many :received_requests
Class ReceivedRequest
belongs_to :user
belongs_to :client
This seems like a pain in the ass. Can I just
- create a #users instance variable in the request#new controller action, without any association
- pass it to the view, have the form display checkboxes
- have the user uncheck people
- somehow pass that variable back to the create action
I guess the more general question is, how do I decide I need to add an association?
Finally, could this be a case where I need to use nested resources?
Thanks for your help. I'm new at this...
You should use an association here since you'll want to store which users are linked with specific requests in the database. The association is the proper way to store these kinds of relationships with rails.
Associations are actually very easy to manage if they're set up properly. I don't see any advantage in using nested resources in this case.
On alternative would be to just use a modified HABTM association but include an attribute in the join model to indicate which user owns the request and which user is receiving it.
Class User
has_many :requests, through: :user_requests
has_many :user_requests
Class Request
has_many :users, through: :user_requests
has_many :user_requests
Class UserRequest
belongs_to :user
belongs_to :request
In UserRequest have a an attribute called :owner. Set this to true for the Join between the User issuing the request and the Request object. The remainder of the Users associated with that request will be receiving it.
New to RoR, but am having a stab at building an app - and I'm looking for some advice on my db structure.
I've got 4 models/tables: Users > Clients > Jobs > Tasks
The app will work as follows:
Users will login
They can add Clients
They can add Jobs to Clients
They can add Tasks to Jobs
So, Tasks belong to Jobs, Jobs belong to Clients, and Clients belong to Users.
I want to query the DB for any one of a Client, a Job, or a Task and also make sure that it belongs to the currently logged-in User. I'm struggling to write a 'railsy' join query and design my associations so I can do this.
I know this would be super easy if I had a user_id field in every table, but that doesn't seem like the right way to do it.
I've read the guide at http://guides.rubyonrails.org/association_basics.html, but am still in the dark a little. Can anyone shed some light on how I might structure my DB - and more importantly my associations?
Thx.
It seems you have your associations set up right from one side, all you have to do is add the other end of the associations using has_many:
class Task < ActiveRecord::Base
belongs_to :job
end
class Job < ActiveRecord::Base
belongs_to :client
has_many :tasks
end
class Client < ActiveRecord::Base
belongs_to :user
has_many :jobs
has_many :tasks, :through => :jobs
end
class User < ActiveRecord::Base
has_many :clients
has_many :jobs, :through => :clients
has_many :tasks, :through => :jobs
end
Now ActiveRecord will take care of the joins for you. It's true that in a pure db schema, you should not have the user_id in more than one place(here that would the clients table). However sometimes it would be added also to the tasks and jobs table for a performance boost, because then the db queries would not be so big. Nevertheless you have to put more effort into making your data consistent - you have to ensure that a job has the same user_id as its client for example.
Then you would be able to define shortcut associations like:
class Task < ActiveRecord::Base
belongs_to :user
end
But in this case I would not do it unless you notice the queries are too slow for your needs. Premature optimization is evil :-)
I'm not sure, if I understood your question correctly, but I believe this can be a solution:
If you write your associations like this, ActiveRecord will create automatically the joins if you ask for user.jobs or user.tasks.
class User < ActiveRecord::Base
has_many :clients
has_many :jobs, :through => :clients
has_many :tasks, :through => :jobs
end
For more Information see the Rails-Api-Documentation
If you want to get everything for a user in one request. You can do this:
user.clients.joins(:jobs => :tasks)