PostsController中的ActiveRecord :: RecordNotFound #new
我正在尝试将帖子嵌入项目中，当我访问帖子/新帖时，我无法理解。 任何帮助将不胜感激。
posts.rb
class Post < ActiveRecord::Base
belongs_to :user
belongs_to :project
attr_accessible :user_id, :content,:avatar, :user_id, :content, :updated_at, :avatar_updated_at, :updated_file_size, :ancestry, :parent_id, :user, :project_id, :id, :post
has_ancestry
acts_as_likeable
acts_as_followable
#acts_as_nested_set
#acts_as_commentable
scope :sorted, lambda { order("posts.id ASC") }
has_attached_file :avatar,
:path => ":rails_root/public/system/:class/:attachement/:id/:basename_:style.:extension",
:url => "/system/:class/:attachement/:id/:basename_:style.:extension",
:styles => {
:thumb => ['100x100#', :jpg, :quality => 70],
:preview => ['480x480#', :jpg, :quality => 70],
:large => ['600>', :jpg, :quality => 70],
:retina => ['1200>', :jpg, :quality => 30]
},
:convert_options => {
:thumb => '-set colorspace sRGB -strip',
:preview => '-set colorspace sRGB -strip',
:large => '-set colorspace sRGB -strip',
:retina => '-set colorspace sRGB -strip -sharpen 0x0.5'
}
validates_attachment :avatar,
# :presence => true,
# :size => { :in => 0..10.megabytes },
:content_type => { :content_type => /^image\/(jpeg|png|gif|tiff)$/ }
# validates :name,
# :presence => true,
# :uniqueness => true
end
posts_controller.rb
class PostsController < ApplicationController
before_action :find_project#:set_post, only: [:show, :edit, :update, :destroy]
# GET /posts
# GET /posts.json
def index
@posts = @project.posts.all
end
# GET /posts/1
# GET /posts/1.json
def show
project = Project.find(params[:project_id])
@post = project.posts.find(params[:id])
end
# GET /posts/new
def new
@project = Project.find(params[:project_id])
@post = project.posts.new({:project_id => @project_id})
@post.parent_id = params[:parent_id]
end
def create
@post = Post.new(post_params)
if @post.save!
redirect_to([@post.project, @post])
redirect_to(:action => 'index', :project_id => @project.id)
else
render(:action => "new")
end
end
# GET /posts/1/edit
def edit
@project = Project.find(params[:project_id])
@post = project.posts.find(params[:id])
end
# POST /posts
# POST /posts.json
def update
project = Project.find(params[:project_id])
@post = Project.posts.find(params[:id])
if @post.update_attributes(params[:posts])
redirect_to ([@post.project, @post])
else
render :action => "edit"
end
end
def delete
@post = Post.find(params[:id])
end
def destroy
project = Project.find(params[:project_id])
@post = project.posts.find(params[:id])
@post.destroy
#post = Post.find(params[:id]).destroy
redirect_to(:action => 'index', :project_id => @project.id)
end
private
def post_params
params.require(:post).permit(:user_id, :content,:avatar, :user_id, :content, :updated_at, :ancestry,:parent_id ,:avatar_updated_at, :updated_file_size, :user , :project_id, :id)
end
def find_project
if params[:project_id]
@project = Project.find(params[:project_id])
end
end
end
的routes.rb
Rails.application.routes.draw do
devise_for :users
#resources :users
resources :projects do
resources :posts
end
get 'users/index'
#root :to => 'posts#index'
get 'users/show'
#root :to => "projects#index"
# root to: 'home#index'
get 'follow' => 'users#follow'
get 'unfollow' => 'users#unfollow'
get 'like' => 'users#like'
get 'unlike' => 'users#unlike'
match ':controller(/:action(/:id))', :via => [:get, :post]
end
index.html.erb
<td><%= post.content %></td>
<% end %>
</tr>
<%= link_to("<< Back to projects", {:controller => 'projects', :action => 'index'}, :class => 'back-link') %>
<div class="posts index">
<h2>posts</h2>
<table class="listing" summary="post list">
<tr class="header">
<th> </th>
<th>project</th>
<th>post</th>
<th>Permalink</th>
<th>Visible</th>
<th>Sections</th>
<th>Actions</th>
</tr>
<% @posts.each do |post| %>
<tr>
<td><%= post.position %></td>
<td><%= post.project.name if post.project %></td>
<td><%= post.name %></td>
<td><%= post.permalink %></td>
<td class="center"><%= status_tag(post.visible) %></td>
<td class="center"><%= post.sections.count %></td>
<td class="actions">
<%= link_to("Add New post", {:action => 'new', :project_id => @project.id}, :class => 'action new') %>
<%= link_to("View Sections", {:controller => 'sections', :post_id => post.id}, :class => 'action show') %>
<%= link_to("Show", {:action => 'show', :id => post.id, :project_id => @project.id}, :class => 'action show') %>
<%= link_to("Edit", {:action => 'edit', :id => post.id, :project_id => @project.id}, :class => 'action edit') %>
<%= link_to("Delete", {:action => 'delete', :id => post.id, :project_id => @project.id}, :class => 'action delete') %>
</td>
</tr>
<% end %>
</table>
</div>
edit.html.erb
<% @Post_title = "Edit Post" %>
<%= link_to("<< Back to List", {:action => 'index', :project_id => @project.id}, :class => 'back-link') %>
<div class="Posts edit">
<h2>Update Post</h2>
<%= form_for(:post, :url => {:action => 'update', :id => @post.id, :project_id => @project.id}) do |f| %>
<%= render(:partial => "form", :locals => {:f => f}) %>
<div class="form-buttons">
<%= submit_tag("Update Post") %>
</div>
<% end %>
</div>
<%- model_class = Post -%>
<div class="Post-header">
<h1><%=t '.title', :default => [:'helpers.titles.edit', 'Edit %{model}'], :model => model_class.model_name.human.titleize %></h1>
</div>
<%= render :partial => 'form' %>
new.html.erb
<% @post_title = "New post" %>
<%= link_to("<< Back to List", {:action => 'index', :project_id => @project.id}, :class => 'back-link') %>
<div class="posts new">
<h2>Create post</h2>
<%= form_for(:post, :url => {:action => 'create', :project_id => @project.id}) do |f| %>
<%= render(:partial => "form", :locals => {:f => f}) %>
<div class="form-buttons">
<%= submit_tag("Create post") %>
</div>
<% end %>
</div>
<%- model_class = Post -%>
<div class="page-header">
<h1><%=t '.title', :default => [:'helpers.titles.new', 'New %{model}'], :model => model_class.model_name.human.titleize %></h1>
</div>
<div :class 'control-label'>
<%= @post.parent.inspect if @post.parent %>
</div>
<%= render :partial => 'form' %>
_form.html.erb
<%= form_for(@post, :html => {:multipart => true, :class => "form-horizontal post" }) do |f| %>
<% if @post.errors.any? %>
<div id="error_expl" class="panel panel-danger">
<div class="panel-heading">
<h3 class="panel-title"><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h3>
</div>
<div class="panel-body">
<ul>
<% @post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
</div>
<% end %>
<%=f.hidden_field :parent_id %>
<div class="control-group">
<%= f.label :user_id, :class => 'control-label' %>
<div class="controls">
<%= f.text_field :user_id, :class => 'form-control' %>
</div>
<%= error_span(@post[:user_id]) %>
</div>
<div class="control-group">
<%= f.label :content, :class => 'control-label' %>
<div class="controls">
<%= f.text_field :content, :class => 'form-control' %>
</div>
<%= error_span(@post[:content]) %>
</div>
<p>
<strong>Avatar:</strong>
<%= image_tag @post.avatar.url(:preview) %>
</p>
<%= f.file_field :avatar %>
<%= f.submit nil, :class => 'btn btn-primary' %>
<%= link_to t('.cancel', :default => t("helpers.links.cancel")),
posts_path, :class => 'btn btn-default' %>
<% end %>
rake routes
rake routes
Prefix Verb URI Pattern Controller#Action
new_user_session GET /users/sign_in(.:format) devise/sessions#new
user_session POST /users/sign_in(.:format) devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
user_password POST /users/password(.:format) devise/passwords#create
new_user_password GET /users/password/new(.:format) devise/passwords#new
edit_user_password GET /users/password/edit(.:format) devise/passwords#edit
PATCH /users/password(.:format) devise/passwords#update
PUT /users/password(.:format) devise/passwords#update
cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel
user_registration POST /users(.:format) devise/registrations#create
new_user_registration GET /users/sign_up(.:format) devise/registrations#new
edit_user_registration GET /users/edit(.:format) devise/registrations#edit
PATCH /users(.:format) devise/registrations#update
PUT /users(.:format) devise/registrations#update
DELETE /users(.:format) devise/registrations#destroy
project_posts GET /projects/:project_id/posts(.:format) posts#index
POST /projects/:project_id/posts(.:format) posts#create
new_project_post GET /projects/:project_id/posts/new(.:format) posts#new
edit_project_post GET /projects/:project_id/posts/:id/edit(.:format) posts#edit
project_post GET /projects/:project_id/posts/:id(.:format) posts#show
PATCH /projects/:project_id/posts/:id(.:format) posts#update
PUT /projects/:project_id/posts/:id(.:format) posts#update
DELETE /projects/:project_id/posts/:id(.:format) posts#destroy
projects GET /projects(.:format) projects#index
POST /projects(.:format) projects#create
new_project GET /projects/new(.:format) projects#new
edit_project GET /projects/:id/edit(.:format) projects#edit
project GET /projects/:id(.:format) projects#show
PATCH /projects/:id(.:format) projects#update
PUT /projects/:id(.:format) projects#update
DELETE /projects/:id(.:format) projects#destroy
users_index GET /users/index(.:format) users#index
users_show GET /users/show(.:format) users#show
follow GET /follow(.:format) users#follow
unfollow GET /unfollow(.:format) users#unfollow
like GET /like(.:format) users#like
unlike GET /unlike(.:format) users#unlike
GET|POST /:controller(/:action(/:id))(.:format) :controller#:action
答案 0 :(得分：0)
您的new操作中存在拼写错误，请在下面找到更正后的代码
def new
@project = Project.where(id: params[:project_id]).first
unless @project.blank?
@post = @project.posts.new({:project_id => @project.id})
@post.parent_id = params[:parent_id]
else
redirect_to root_path, notice: "Project cannot be blank!"
end
end
希望有所帮助！
答案 1 :(得分：0)
它只是意味着你的项目不存在。您确定它已在您的数据库中创建吗？此外，您可以更改此行代码（@project_id也看起来像拼写错误）：
@post = project.posts.new({:project_id => @project_id})
到
@post = project.posts.new
因为project.posts.new会自动将项目ID插入到子项中。