Rails-如何在帖子评论中插入user_id？

Question

Probably a simple question, but I'm just learning Rails and tryin to get comments to post to my database. When I post, no error is thrown but the record is not created.

def create

    @post = Post.find(params[:post_id])
    @comment = @post.comments.create(params[:comment].permit(:comment))

    redirect_to post_path(@post)

end

Posts and comments have a typical nested relationship. I believe the problem lays with a column in my comments table called 'user_id' that should store the relationship of a comment to a user.

How can I set this column in the above code to have the value of 'current_user'?

Many thanks, Michael.

Answer 1

Combining previous answers, try

@post   = current_user.posts.find(params[:comment][:post_id])
@comment = @post.comments.build(params[:comment].permit(:comment))
@comment.save!

or perhaps

@post = Post.find(params[:post_id])
@comment = @post.comments.build(params[:comment].permit(:comment))
@comment.user_id = current_user.id
@comment.save!

Answer 2

Supposing your form already supplies post_id and that you are using the Rails Tutorial method "current_user", plus that the user supposingly has_many :posts , you can fill all of the fields with this code:

@post   = current_user.posts.find(params[:comment][:post_id])
@comment= @post.comments.create(params[:comment][:comment])