Unpermitted parameter: ROR - ruby-on-rails

Question

I am new in ror and when I submit my form:
<%= form_for :project, url: projects_path, html: {id:'form'} do |f| %>
<%= f.text_field :text, placeholder: 'Новая задача' %>
<%= link_to 'Отмена', '', id:'cancel_link' %>
<%= link_to 'Отправить', projects_path, id:'submit_link' %>
<% end %>
Have error:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"OR2HWCi3zVz9gB5VAmnzbEuzIwFGE58JlLrWQdNcws6FVTzqh5Cu0zvUJTUEv2O/sCvU9HuadJYr3mfA40ehGA==", "project"=>{"text"=>"NEW ITEM"}} Unpermitted parameter: :text
Have two models:
class Project < ApplicationRecord
has_many :todos
validates :title, presence: true
accepts_nested_attributes_for :todos
end
class Todo < ApplicationRecord
belongs_to :project, required: false
end
The Todo model has a text attribute in which our todo should be located
Controller
class ProjectsController < ApplicationController
def index
#projects = Project.all
end
def create
#project = Project.new(project_params)
if #project.save
redirect_to root_path
end
end
def update
end
private
def project_params
params.require(:project).permit(:title, todos_attributes: [:id, :text])
end
end
Project db
class CreateProjects < ActiveRecord::Migration[5.2]
def change
create_table :projects do |t|
t.string :title
t.string :todos
t.timestamps
end
Todo db
class CreateTodos < ActiveRecord::Migration[5.2]
def change
create_table :todos do |t|
t.text :text
t.boolean :isCompleted
t.integer :project_id
t.timestamps
end
I'm requesting the todo attributes using accepts_nested_attributes_for: todos, the controller is also registered on the guides, in project_params I request todos_attributes. But when sending a form to the database, the value is text. He does not save in db. Can u help please

Answer 1

In order to save text field in Todo model, you have to create nested form. Use nested_form gem for this purpose.
A vague example to show how it works:
<%= nested_form_for :project, url: projects_path, html: { id: 'form' } do |f| %>
<%= f.text_field :title, placeholder: 'Новая задача' %>
<%= f.fields_for :todos do |todo_form| %>
<%= todo_form.text_field :text %>
<%= todo_form.link_to_remove "Remove this todo" %>
<% end %>
<p><%= f.link_to_add "Add a todo", :todos %></p>
<%= link_to 'Отмена', '', id:'cancel_link' %>
<%= link_to 'Отправить', projects_path, id:'submit_link' %>
<% end %>
In controller, to have the functionality of removing a todo in case of editing a project:
def project_params
params.require(:project).permit(:title, todos_attributes: [:id, :text, _destroy])
end
In the migration CreateProjects < ActiveRecord::Migration[5.2], I do not think that you require todos as a string.

Answer 2

The form which you created is wrong, you need to create a nestead_form
It is giving you and Unpermitted parameter error because the text is not a field of project model you can check this on your migration file. You need to change it to title because the title is the field of project model.
And for to create a nested form you need to do some changes in your form
<%= form_for :project, url: projects_path, html: {id:'form'} do |f| %>
<%= f.text_field :title, placeholder: 'Новая задача' %>
<%= f.fields_for :todos do |todo| %>
<%= f.text_field :text %>
<% end %>
<%= link_to 'Отмена', '', id:'cancel_link' %>
<%= link_to 'Отправить', projects_path, id:'submit_link' %>
<% end %>