Create Multiple Records with Fields_For - Rails

Create Multiple records with fields_for - Rails

undefined method `description' for []:Array

To describe the reason for the error, fields_for accepts record_object as a second parameter which fields_for uses it to construct the fields. Here you are passing @all_list_items which is an array and that results in the error.

Solution to the error:

You should pass @list_item instead of @all_list_items

<%= fields_for :list_items, @list_item do |list_item_form| %>

Solution to the actual problem:

As you want to create multiple list_items, you should do

def new
  @task = @assignment.tasks.new
  x.times do
    @list_item = @task.list_items.build
  end
  @all_list_items = []
end

where x is how many list_items you want to create, for example if you want to create three list_items, then replace x with 3.

OR

Use cocoon gem to dynamically create nested forms.

Create multiple records with a simple form on Rails

Ok, here is how i solved it, so it may help in the future

here is the forms file:

<div class="panel-body">
  <div class="row">
    <table class="table table-hover">
      <thead class="warning">
       <th><center>Color</center></th>
       <th><center>Material</center></th>
       <th><center>Espesor</center></th>
       <th><center>Altas</center></th>
       <th ><center>Bajas</center></th>
      </thead>
   <%= form_tag stocks_path  do %>

   <% @items.each do |item| %>
   <%= fields_for 'data[]', @stock do |stock| %>
   <tbody>
  <tr>
  <td><%= item.nombre %></td>
  <td><center><%= item.material %></center></td>
  <td><center><%= item.espesor %></center></td>
  <td><center><%= stock.text_field :altas %></center></td>
  <td><center><%= stock.text_field :bajas %></center></td>
  <%= stock.hidden_field :item_id, :value => item.id %>
 <% end %>

<% end %>
</tr>
</tbody>
</table>
<div class="form-group">
<div class="col-sm-offset-3 col-sm-5">
<%= submit_tag "Update", class: "btn btn-primary" %>
<% end %>
</div>
</div>

And this is how the controller is working

  @stock = Stock.create(my_params(d))
   if @stock.altas == nil && @stock.bajas == nil
   @stock.destroy
   else
   @stock.save

   end
 @item = Item.find(@stock.item_id)
  if @stock.altas != nil
   @item.quantity =  @stock.item.quantity + @stock.altas
  end
  if @stock.bajas != nil
   @item.quantity = @stock.item.quantity - @stock.bajas
  end
  @item.save
 end

  redirect_to stocks_url, notice: 'Stock was successfully created.'

end

Everything works, and its also substracting and adding to the total quantity

Rails - creating multiple records of one model in one form

To do this with form_for is possible but since this is really not a form that relates to a single model instance, you really should stick to form_tag

To do it as form_for every name will have to be an attribute.

You could do (in your model)...

attr_accessor :name1, :name2, :name3

This will let the additional names be accepted even though they're not columns in the db table.

Then in your create method...

def create
  %i(name name1 name2 name3).each |this_name|
    User.create(name: user_params(this_name)) if user_params(this_name).present?
  end
end

def user_params
  params.require(:user).permit(:name, :name1, :name2, :name3)
end

Rails create multiple rows from one form

you can modify it in your building controller in create action.

def create
  @building = Building.new(building_params)
  if @building.save
    floors = params[:number].to_i
    floors.times do
      Floor.create(building: @building)
    end 
    redirect_to building_path
  else
    redirect_to error
  end
end

in your form add a field for number of floor without erb

<%= form_with(model: building, local: true) do |form| %>
  <% if building.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(building.errors.count, "error") %> prohibited this building 
       from being saved:</h2>

     <ul>
       <% building.errors.full_messages.each do |message| %>
        <li><%= message %></li>
        <% end %>
       </ul>
      </div>
      <% end %>

      <div class="field">
         <%= form.label :name %>
          <%= form.text_field :name %>
      </div>

      <div class="field">
        <label> How many floors does the building have</label>
        <input type="number" name="number"/>
      </div>

      <div class="actions">
        <%= form.submit %>
      </div>
   <% end %>

Rails create multiple records with multiple fields

you might want to do it this way instead:

View:

<% 1.upto(2) do |i| %>
  <%= text_field_tag "fields[#{i}][user]",'', :class => "user_name" %>
  <%= radio_button_tag "fields[#{i}][is_checked]", '1', false %><br>
<% end %>

so you will receive something like this:

"fields" => {
  "1" => {"user" => "value of 1", "is_checked" => "for 1"},
  "2" => {"user" => "value of 2", "is_checked" => "for 2"}
}

then you can do this in the Controller:

params[:fields].each do |i, values| do
  # where i is the i-th set
  # and values are the user inputs

  u = User.create(values)
end

hope this helps! =)

Create multiple records using single form (Not nested attributes)

You can try with the below solution

In your View File

<%= form_tag your_action_path do %>
  <% 4.times do |i|%>
    Content : <%= text_area_tag :thought_content, "", :name => "thoughts[][content]" %>
    Author : <%= text_field_tag :thought_author, "", :name => "thoughts[][author]" %>
  <% end %>
  <%= submit_tag "Submit" %>
<% end %>

Controller Code:

def your_action
  params[:thoughts].each do |thought_params|
    Thought.create(thought_params)
  end
  ###
  #Any further code#
  ###
end

Hope it works for you :)

How to create multiple records from a single textfield in Rails?

So this is the (desperately in need of refactoring) answer:

@post = Post.new(post_params)
@posts_collection = @post.text.to_s.split(/\r\n\r\n/)

@posts_collection.each do |post|
  @post = Post.new(post_params)
  @post.save
end

Basically- split up the text field into an array, and then save each item in the collection as a new record.

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