如何修复丢失的模板错误？

Question

我正在建立一个拥有用户页面的网站,该用户页面应该允许用户创建公告帖子.

当我尝试通过网站创建新的公告帖时,会弹出如下错误:

Template is missing
Missing template announcements/create, application/create with {:locale=>[:en],     :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: * ".../app/views"

如果我在该位置创建create.html.erb,表单将始终返回false.

用户页面(/app/view/users/show.html.erb):

<% provide(:title, 'Admin Page') %>

<% if signed_in? %>
  <div class="container">
    <%= link_to "Sign out", signout_path, method: "delete" %>
    <br />

     <% if @announcements.any? %>
      <h3>Announcements (<%= @announcements.count %>)</h3>
      <ol>
        <%= render @announcements %>
      </ol>
      <%= will_paginate @announcements %>
    <% end %>

      <%= render 'shared/announcement_form' %>
  </div>

<% else %>
<script type="text/javascript"> window.location.href= '<%= signin_path %>' </script>
<% end %>

共享/ _announcement_form.html.erb:

<%= form_for(@announcement) do |f| %>
  <%= render 'shared/error_messages', object: f.object %>

   <div class="field">
    <%= f.text_area :title, placeholder: "Compose new title..." %>
  </div>
  <div class="field">
    <%= f.text_area :content, placeholder: "Compose new announcement..." %>
  </div>
  <%= f.submit "Post", class: "btn btn-large btn-primary" %>
<% end %>

UsersController:

class UsersController < ApplicationController
  def new
  end

  def show
    @user = User.find(params[:id])
    @announcement = current_user.announcements.build if signed_in?
    @announcements = @user.announcements.paginate(:page => params[:a_page], :per_page  => 10)
  end
end

AnnouncementsController:

class AnnouncementsController < ApplicationController
  before_action :signed_in_user, only: [:create, :destroy]

  def create
    @announcement = current_user.announcements.build(announcement_params)

    if @announcement.save
      flash[:success] = "Announcement created!"
      redirect_to root_url
    else
      flash[:error] = "Failed to create announcement!"
    end
  end

  def destroy
  end

  private

  def announcement_params
    params.require(:announcement).permit(:content)
    params.require(:announcement).permit(:title)
  end
end

我已经检查过我可以在控制台中手动创建通知.我究竟做错了什么？

Answer 1

如果@announcement无法保存AnnouncementsController#create,则呈现操作的默认视图 - 在这种情况下create.html.erb不存在.因此,您会收到您所看到的错误.

通常,create动作会使用表单重新呈现模板.通常这就是new行动,这意味着要添加render "new"到行动的else一部分create.

然而,在你的情况下,似乎它是"shared/announcements_form"部分的,这意味着添加

render "shared/announcements_form"

你的create行动.