I am trying to allow users to reply through comments by allowing users
to click a reply link next to the parent comment. It will send in a
parameter to the 'new' comment view, like so:
| <%= link_to "Reply", new_comment_path(:in_reply_to => comment.id) %>
The form will use the :in_reply_to parameter in order to save that id as
the parent id, like so:
comments_controller#new:
@comment_parent = Comment.find(params[:in_reply_to])
comments_form view:
<%= form_for([...@comment]) do |f| %>
<%#= render 'shared/error_messages', :object => f.object %>
<div class="field">
<%= f.label :title %><br />
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :content %><br />
<%= f.text_area :content %>
</div>
<%= f.hidden_field :parent_id, :value => @comment_parent.id %>
<div class="actions">
<%= f.submit "Post Comment" %>
</div>
<% end %>
So, in the create controller, I want to create a new comment based on
the parameters, and then find the parent comment by looking up the
parent_id in Comment.find, but it cannot find any comment with that ID.
comments_controller#create
@comment = Comment.new(params[:comment])
@comment.user_id = current_user.id
@comment.save!
@comment_parent = Comment.find(params[:parent_id]) # cannot find a
comment with this ID?
@comment_parent.children << @comment
if @comment.save
flash[:success] = "Comment saved."
@comment_parent.save
redirect_to @comment
else
flash[:error] = "Error in creating comment."
# @comments = @commentable.comments.paginate(:page =>
params[:page])
render 'new'
I get this error: Couldn't find Comment without an ID, from this line:
@comment_parent = Comment.find(params[:parent_id])
I also try @comment_parent = Comment.find(@comment.parent_id), but I get
the same error.
Thank you.
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