Question

我的管制人员有以下守则:

文件:控制器/控制器/控制器/控制器。

def show_snapshot_comments
    snapshot = Snapshot.find(params[:id])
    @photo = snapshot.photo
    comments = snapshot.comments.paginate :page => params[:page]
    @snapshot_comment = snapshot.comments.new
      respond_to do |format|
        format.js
      end
   end

The JavaScript (jQuery): File: app/views/photos/show_snapshot_comments.js.erb

$j( #info ).append("<%= escape_javascript(render :partial  => "snapshot_comments",
        :locals   => {:snapshot => snapshot, :comments => comments}) %>" );

show_snapshot_copmments is called from: app/views/photos/show.html.erb

似乎没有工作。

我的错误:

发送照片/how_snapshot_com

ActionView::TemplateError (undefined local variable or method `snapshot  for #<ActionView::Base:0x2aaaaea473c8>) on line #2 of app/views/photos/show_snapshot_comments.js.erb:
1: $j( #info ).append("<%= escape_javascript(render :partial  => "snapshot_comments",
2:         :locals   => {:snapshot => snapshot, :comments => comments}) %>" );

    app/views/photos/show_snapshot_comments.js.erb:2
    app/controllers/photos_controller.rb:227:in `show_snapshot_comments

可能出现的任何想法?

Answer 1

You are trying to pass the local variables to the partial snapshot_comments". However this two local variables, snapshot and comments are not defined in current scope (in the view).

如果你想通过变量向控制者提出意见,你必须做以下工作:

def show_snapshot_comments
    @snapshot = Snapshot.find(params[:id])
    @photo = snapshot.photo
    @comments = snapshot.comments.paginate :page => params[:page]
    @snapshot_comment = snapshot.comments.new
      respond_to do |format|
        format.js
      end
   end

$j( #info ).append("<%= escape_javascript(render :partial  => "snapshot_comments",
        :locals   => {:snapshot => @snapshot, :comments => @comments}) %>" );

查阅上述法典,看看它是否发挥作用。我只将头盔和评论改为@snapshot和@comments。

Answer 2

缩略语被定为控制器的一个当地变量,因此模板没有看到。视其为案例变量:

@snapshot = Snapshot.find(params[:id])

然后在模板中:

:locals   => {:snapshot => @snapshot

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