I have simple but frustrating problem with showing validation errors for comments of posts. Error partial shows errors for posts but despite validation works on comments, errors don't render.
comment form partial is inserted into post view:
<%= form_for([#post, #post.comments.build]) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<p>
<%= f.label :commenter %><br>
<%= f.text_field :commenter %>
</p>
<p>
<%= f.label :body %><br>
<%= f.text_area :body %>
</p>
<p>
<%= f.submit %>
</p>
<% end %>
errors partial
<% if object.errors.any? %>
<h2>Errors:</h2>
<ul>
<% object.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
models:
class Post < ActiveRecord::Base
has_many :comments, dependent: :destroy
validates :title, :content, :presence => true
validates :title, length: { minimum: 3 }
validates :title, :uniqueness => true
end
class Comment < ActiveRecord::Base
belongs_to :post
validates :body, presence: true
validates :commenter, presence: true, length: { minimum: 3 }
end
I have been looking for answer for some time but can't get it working.
Add this line to the Post model
validates_associated :comments
Related
I am currently building a Rails App and I have two associated models.
Subnets and devices, the devices are inside the subnets. Both do some degree of validation.
class Subnet < ApplicationRecord
has_many :devices , dependent: :destroy
validates_presence_of :devices
validates :name, presence: true, uniqueness: true
validates :CIDR, presence: true
validates_associated :devices
end
class Device < ApplicationRecord
belongs_to :subnet
validates :subnet, :presence => true
validates :name, presence: true, uniqueness: {scope: :subnet_id}
validates :IP, presence: true, uniqueness: {scope: :subnet_id}
end
When trying to create a new device, which already exists, this new device will not be created - which is supposed to work like that.
Although, I would like some kind of error message displayed after this incident, but my code doesn't seem to hand over the errors from child to parent.
The relevant part of my view for the subnets (which also contains the error handling) looks like this:
...
<% if #subnet.errors.any? %> <-------- This line seems to not get the information about the failed validation of the device
<div id="error_explanation">
<h2>
<%= pluralize(#subnet.errors.count, "error") %> prohibited
this subnet from being saved:
</h2>
<ul>
<% #subnet.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<h2>Add a device:</h2>
<%= form_with(model: [ #subnet, #subnet.devices.build ], local: true) do |form| %>
<p>
<%= form.label :name %><br>
<%= form.text_field :name %>
</p>
<p>
<%= form.label :IP %><br>
<%= form.text_field :IP %>
</p>
<p>
<%= form.label :notes %><br>
<%= form.text_area :notes %>
</p>
<p>
<%= form.submit %>
</p>
<% end %>
...
And the create function for the devices from the device_controller looks like this:
def create
#subnet = Subnet.find(params[:subnet_id])
#device = #subnet.devices.create(device_params)
redirect_to subnet_path(#subnet)
end
How can I get my subnet show view to react to the errors from the devices?
I have one controller for Property and other one for Country one property has one country
My Property model
class Property < ApplicationRecord
acts_as_paranoid
has_one :country, class_name: Country
belongs_to :company
accepts_nested_attributes_for :country
validates :name, presence: true
validates :address, presence: true
My Country model
class Country < ApplicationRecord
acts_as_paranoid
belongs_to :property
validates :name, presence: true
validates :isoalpha2, presence: true
validates :isolapha3, presence: true
And when I want to add one property with my view (new.html.erb)
<%= simple_form_for [#property, #country], url: property_new_path do |f| %>
<% if #property.errors.any? %>
<%= pluralize(#property.errors.count, "error") %> prohibited
this property from being saved:
<% #property.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
<% end %>
<%= f.input :name %>
<%= f.input :description %>
<%= f.input :address %>
<%= f.submit %>
I receive the following error:
undefined method `description' for #<Country:0x8de0b20>
I don't know why is taking the Country class instead of Property , because description is part of the Property controller
Thanks
That should be like
<%= simple_form_for [ #country, #property] do |f| %>
and routes should be in nested form
resources :countries do
resources :properties, except: [:index]
end
Hope this will work for you
I added a nested attribute to my form, the fields for the nested attribute which is Education fields do not render, the other fields do. The relationships appear to be in order and the controller does too.
Here is the code.
Controller
def new
#profile = current_user.build_student_profile
end
def profile_params
params.require(:student_profile).permit(:first_name, :last_name, :gender, student_profiles_attributes: [:degree, :university_id, :major, :major2, :start_date, :end_date, :grade, :grade_scale] )
end
Models
class Education < ActiveRecord::Base
belongs_to :student_profile
belongs_to :university
validates :grade_scale, inclusion: { in: %w(GPA4 GPA7 WAM100) }
validates :degree, :university_id, :major, :start_date, :end_date, :grade, :grade_scale, presence: true
end
class StudentProfile < ActiveRecord::Base
belongs_to :user
has_many :educations
validates :gender, inclusion: { in: %w(male female) }
validates :first_name, :last_name, :gender, presence: true
accepts_nested_attributes_for :educations
end
Form
<%= form_for (#profile) do |f| %>
<%= f.label :first_name %>
<%= f.text_field :first_name %>
<%= f.label :last_name %>
<%= f.text_field :last_name %>
<%= f.label :gender %>
<%= f.text_field :gender %>
<%= f.fields_for :educations do |education_fields| %>
<%= education_fields.label :Degree %>
<%= education_fields.text_field :degree %>
<%= education_fields.label :University %>
<%= education_fields.collection_select(:university_id, University.all, :id, :name) %>
<%= education_fields.label :Major %>
<%= education_fields.text_field :major %>
<%= education_fields.label :Additional_Major %>
<%= education_fields.text_field :major2 %>
<%= education_fields.label :Start_Date %>
<%= education_fields.date_field :start_date %>
<%= education_fields.label :End_Date %>
<%= education_fields.date_field :end_date %>
<%= education_fields.label :Grade %>
<%= education_fields.number_field :grade %>
<%= education_fields.label :Grade_Scale %>
<%= education_fields.select :grade_scale, [["GPA / 4","GPA4"], ["GPA / 7","GPA7"], ["WAM / 100","WAM100"]] %>
<% end %>
<%= f.submit :submit %>
<% end %>
I have tried to add the following to the controller new action #profile.educations.build but I get an error unknown attribute student_profile_id
Can anyone help ?
Make sure you have student_profile_id attribute/column present in educations table.
After that, as you have mentioned, you need to build educations object on student_profile as:
def new
#profile = current_user.build_student_profile
#profile.educations.build
end
Try this
<%= f.fields_for(:educations,#profile.educations.build) do |education_fields| %>
<% end %>
or
def new
#profile = current_user.build_student_profile
#educations = #profile.educations.build
end
<%= f.fields_for(#educations) do |education_fields| %>
<% end %>
I want to create a nested form with relations between Clientes has_many enderecos, but in my form nothing is show up.
Look my models:
class Cliente < ActiveRecord::Base
has_many :enderecos, dependent: :destroy
validates :nome, :sexo, presence: true
validates :cpf, :email, :username, presence:true, uniqueness: true
has_secure_password
accepts_nested_attributes_for :enderecos
end
And endereco:
class Endereco < ActiveRecord::Base
belongs_to :cliente
end
And my form:
<%= form_for(#cliente) do |f| %>
<div class="field">
<%= f.text_field :nome, placeholder: 'Nome completo', size: '50px' %>
</div>
<% f.fields_for :endereco do |endereco_form| %>
<div class="field">
<%= endereco_form.label :cep, 'placeholder: ' %>
<%= endereco_form.text_field :cep, placeholder: 'CEP' %>
</div>
<div class="field">
<%= endereco_form.text_field :numero, placeholder: 'Número' %>
</div>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
But inside nested part nothing is show up, what's happening?
You forgot the '=' sign:
<%= f.fields_for :endereco do |endereco_form| %>
I am working on my first rails application and I am attempting to setup multiple image uploads in a form. I have created a contest which has many contest entries, and contest entries can have many images. I have the contest entry piece working, but I am having trouble getting the image upload portion of the form working. I am following this tutorial http://lucapette.com/rails/multiple-files-upload-with-carrierwave-and-nested_form/ linked to from the carrier wave wiki.
contest entry model
class ContestEntry < ActiveRecord::Base
attr_accessible :body, :title, :contest_id, :entry_images_attributes
validates :user_id, presence: true
validates :title, presence: true, length: { maximum: 140 }
validates :body, presence: true
validates :contest_id, presence: true
belongs_to :contest
belongs_to :user
has_many :entry_images, as: :imageable
accepts_nested_attributes_for :entry_images
end
Entry image model
class EntryImage < ActiveRecord::Base
attr_accessible :alt, :image_path
belongs_to :imageable, :polymorphic => true
validates :image_path, presence: true
mount_uploader :image, ImageUploader
end
New entry form
<%= nested_form_for([:contest, #entry], :html => {:multipart => true}) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.hidden_field :contest_id %>
<p>
<%= f.label :title %><br />
<%= f.text_field :title %>
</p>
<p>
<%= f.label :body %><br>
<%= f.text_area :body %>
</p>
<%= f.fields_for :entry_images do |builder| %>
<p>
<%= builder.label :alt %><br />
<%= builder.text_field :alt %>
</p>
<p>
<%= builder.label :image_path %><br />
<%= builder.file_field :image_path %>
</p>
<% end %>
<p><%= f.link_to_add "Add Image", :entry_images %></p>
<%= f.submit "Enter", class: "btn btn-large btn-primary" %>
<% end %>
<%= javascript_include_tag :defaults,"nested_form" %>
for some reason nothing shows up in the <%= f.fields_for :entry_images do |builder| %> block. It is just blank there is also no error message. if I switch it to
<%= f.fields_for :entry_image do |builder| %> and switch to using a form_for instead of the nested_form_for plugin all the fields show up but I get errors when I submit.
Any ideas?
Thanks,
Cory