当我使用ajax调用创建/销毁对象时,更新表(添加/删除行)时出现问题。使用ajax调用更新部分多态对象的表Rails
我正在处理的应用程序可以将任务分配给各种类别,如项目,文档等。任务模型通过与这些对象的多态关系实现。
我目前正在渲染任务列表和表单以创建一个新的任务作为partials。 form_for新任务使用ajax来显示/隐藏表单并创建一个新任务。
我遇到的问题是我能够创建和销毁任务,并且form_for似乎正在工作。但是,当我尝试在js.erb调用中重新渲染局部时,我无法获得表更新。该表只会在刷新时更新。
(我还在destroy操作上产生了一个406未知格式错误,我还没有想出来,但由于销毁和创建操作是相同的,我假设我仍然会有非更新问题)
任务控制器
class TasksController < ApplicationController
before_action :set_task, only: [:show, :edit, :update, :destroy]
before_action :logged_in_user, only: [:index, :my_tasks, :edit, :update, :destroy]
respond_to :html, :json, :js
.
.
.
def create
@assignable = find_assignable
@task = @assignable.tasks.build(task_params)
if @task.save
respond_to do |format|
format.js
format.html {redirect_to @task}
end
else
respond_to do |format|
format.html { render :new }
format.json { render json: @task.errors, status: :unprocessable_entity }
end
end
end
def new
@assignable = params[:assignable_type].constantize.find_by(params[:assignable_id])
@task = Task.new
end
def destroy
@assignable = params[:assignable_type].constantize.find_by(params[:assignable_id])
@assignable.tasks.find(params[:id]).destroy
respond_to do |format|
format.js
format.html {redirect_to :action => :index, status: 303 }
format.json { head :no_content }
end
end
.
.
.
def find_assignable
params.each do |name, value|
if name =~ /(.+)_id$/
return $1.classify.constantize.find(value)
end
end
nil
end
在那里我创建任务列表 任务的部分/ _task_list
%tbody
- assignable.tasks.each do |task|
-# the path builder below only works if there is one underscore in the object name. MasterPo --> master_pos
- path = "#{task.assignable_type.gsub(/([a-z])(?=[A-Z])/,'\1_\2').downcase.pluralize}/#{assignable.id}/tasks/#{task.id}"
%tr
%td= best_in_place task, :description, :url => path
%td= best_in_place task, :priority, :url => path
%td= best_in_place task, :status, :as => :select,
:collection => {"1" => "Approved", "2" => "Pending", "3" => "Outstanding", "4" => "Review"}, :url => path
%td= best_in_place task, :created_by, :url => path
%td= task.assignable_type
%td= link_to 'delete',
task_path(assignable, assignable_id: assignable.id, assignable_type: assignable.class.name, id: task.id),
remote: true, method: :delete, data: {confirm: 'Are you sure'}
%br
.row
.col-md-2.col-md-offset-4
= link_to new_task_path(assignable, assignable_id: assignable.id, assignable_type: assignable.class.name), remote: true do
%button.btn.btn-default New Task
.row
#task-form{:style => "display:none;"}
:javascript
$(document).ready(function() {
/* Activating Best In Place */
jQuery(".best_in_place").best_in_place();
});
下面给出参考其中要求我的窗体部分:
任务/ _form
= simple_form_for [@assignable, Task.new], remote: true do |f|
- if Task.new.errors.any?
#error_explanation
%h2= "#{pluralize(@task.errors.count, "error")} prohibited this task from being saved:"
%ul
- @task.errors.full_messages.each do |msg|
%li= msg
= f.input :description, as: :text
= f.input :priority, collection: 1..5
= f.input :status, collection: ["Open", "Completed", "Assigned"]
= f.button :submit
现在,我假设我的错误必须在我试图渲染方式我的_task_list部分在我的create.js.erb和我的destroy.js.erb中。该js.erb文件如下:
create.js.erb
$('#tasks').html("<%= j (render partial: 'tasks/task_list', locals: {assignable: @assignable}) %>");
$('#task-form').slideUp(350);
new.js.erb
$('#task-form').html("<%= j (render 'form', locals: {assignable: @assignable}) %>");
$('#task-form').slideDown(350);
和destroy.js.erb
$('#tasks').html("<%= j (render partial: 'tasks/task_list', locals: {assignable: @assignable}) %>");
我试着在控制器和create.js.erb文件中定义@ assignable.reload ...当我调试它时显示调用create.js视图之前的新任务,但仍未更新视图。我应该在哪里重新定义它? – greatwhitenorth
你问题解决了吗? – Ajit