Simple_Fields_For:表单上的多个空行 [英] Simple_Fields_For: Multiple Blank Lines on a Form

问题描述

我正在尝试使用simple_fields_for在一个简单的表单上获得许多空行，但是只显示一行/记录.这是下面的代码，模型，控制器和视图.

I am trying to get a number of blank lines on a simple form using simple_fields_for but only one line/record displays. This is the code below, the models, controller, and view.

class Journal < ActiveRecord::Base
    has_many :journal_lines
end

class JournalLine < ActiveRecord::Base
    belongs_to :journal
end


class JournalController < ApplicationController
    def  new
        @organisation = Organisation.find(params[:organisation_id])
        @journal = Journal.new
        @journal.journal_lines = Array.new(5, JournalLine.new)
    end
...


<%= simple_form_for @journal, :url => {:controller => 'journal', :action => 'create', :id => @organisation.id}, :method => :post do |f| %>
    <%= f.input :transaction_date, as: :string, input_html: {class: 'datepicker'} %>
    <%= f.input :reference %>
    <%= f.input :memo %>

    <table>
        <tr><td>Account</td><td>Debit</td><td>Credit</td><td>Memo</td></tr>
        <%= f.simple_fields_for :journal_lines do |jl| %>
            <tr>
                <td><%= jl.input :finacct_id, :collection => Finacct.all, :label_method => :full_account_name, :value_method => :id, :label => false ,:include_blank => false %></td>
                <td><%= jl.input :debit, :label => false %></td>
                <td><%= jl.input :credit, :label => false %></td>
                <td><%= jl.input :memo, :label => false %></td>
            </tr>
        <% end %>
    </table>
    <%= submit_tag 'Create' %>
<% end %>

我不确定为什么在屏幕上看不到一个以上的日记行.当我记录journal_lines对象时，我看到5个空对象，但是在表单中仅显示一个.

I'm not sure why I cannot see more than one journal line on the screen. When I log the journal_lines object I see 5 empty objects, but only one displays in the form.

推荐答案

好的.我确实得到了一个答案，但是它没有按照回答的方式工作，因此海报将其删除.但是，经过很多混乱之后，事实证明期刊模型需要以下条件

Okay. I did get an answer but it didn't work as answered so the poster deleted it. However, after a lot of messing around it turned out to be the journal model needed the following

accepts_nested_attributes_for :journal_lines

一旦我添加了，所有五个空白行就会显示在表单上.

Once I added that, all five blank lines showed up on the form.

另一个答案还建议我在控制器中执行此操作

The other answer also suggested that I do this in the controller

    @journal = Journal.new
    5.times do |i|
        @journal.journal_lines.build
    end

不确定这是否有所作为，但是现在就可以了.希望这会有所帮助.

Not sure if that made a difference, but it's in now. Hope this helps.

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