這是我第一次使用Cocoon,也許這是一個非常愚蠢的問題,但我已經花了很多時間尋找如何使用ERB模板來做到這一點,並避免使用simple_form或其他幫助。Rails 4,Cocoon,ERB Template,如何在Edit Action中選擇一個options_from_collection_for_select?
看看我的模型:
型號/ loot.rb
class Lot < ActiveRecord::Base
has_many :colindanciums, dependent: :destroy
has_many :cardinal_points, through: :colindanciums
accepts_nested_attributes_for :colindanciums, allow_destroy: true
end
型號/ colindancium.rb
class Colindancium < ActiveRecord::Base
belongs_to :cardinal_poing
belongs_to :lot
end
型號/ cardinal_point.rb
class CardinalPoint < ActiveRecord::Base
has_many :colindanciums
has_many :lots, through: :colindanciums
end
形式: 視圖/批次/ _form.html.erb
<%= form_for(@lot, remote: true) do |f| %>
<%= render 'shared/error_messages', object: @lot %>
...
...
...
<fieldset id="colindancium-orientation">
<ol>
<%= f.fields_for :colindanciums do |colindancium| %>
<%= render 'colindancium_fields', f: colindancium %>
<% end %>
</ol>
<%= link_to_add_association 'Nueva Colindancia', f, :colindanciums, 'data-association-insertion-node' => "#colindancium-orientation ol", 'data-association-insertion-method' => "append" %>
</fieldset>
...
...
...
<% end %>
局部:
視圖/批次/ _colindancium_fields.html.erb
<li class="control-group nested-fields">
<div class="controls">
<%= f.label :description, "Descripcion:" %>
<%= f.text_field :description %>
<%= f.label :linear_meters, "Metros Lineales:" %>
<%= f.text_field :linear_meters %>
<%= f.label :cardinal_point_id, "Orientacion:" %>
<%= f.select :cardinal_point_id,
options_from_collection_for_select(CardinalPoint.all, :id, :name), { }, { :class => "form-control", :prompt => "Seleccione un Punto Cardinal" } %>
<%= link_to_remove_association "Eliminar", f %>
</div>
</li>
當我插入新字段時,一切正常,它將它保存在數據庫中,它在數據庫中更新它,我的問題是在options_from_collection_for_select當我在Edit Action中打開表單時,此幫助程序的第四個參數是選定的值...我無法找到我選擇存儲在我的數據庫中的值,它始終顯示1索引...我不能訪問@ ...對象從_form,其他字段(:description,:: linear_meters)工作很好我的問題是在f.select,我不知道該怎麼做。
編輯我的控制器:
# GET /lots/new
def new
@lot = Lot.new
@lot.colindanciums.build
authorize @lot
end
# PATCH/PUT /lots/1
# PATCH/PUT /lots/1.json
def update
authorize @lot
respond_to do |format|
if @lot.update(lot_params)
format.html { redirect_to @lot, notice: 'Lot was successfully updated.' }
format.json { render :show, status: :ok, location: @lot }
format.js
else
format.html { render :edit }
format.json { render json: @lot.errors, status: :unprocessable_entity }
format.js { render json: @lot.errors, status: :unprocessable_entity }
end
end
end
請發佈控制器代碼。 – Pavan
我有完全相同的問題。控制器非常簡單,就像查找對象一樣,查找options_from_collection_for_select的值並將其全部渲染出來。 – Screatch