CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3ruby-on-rails-3.1
user1107922
user1107922

Reputation: 610

rails can't save result in DB

I have some controllers - users, categories, stories and comments. Everything was okay till I did comments. In my DB I want to save content, user_id, story_id but the table is empty. @comment.save is false. Here is part of my code:

CommentsController:

def create
  @story = Story.find(params[:story_id])
  @comment = @story.comments.create(params[:comment])
  if @comment.save
    flash[:success] = "Successfull added comment"
    redirect_to stories_path
  else
    render 'new'
  end
end

show.html.erb for StoriesController:

<b><%= @story.title %></b> <br/><br/>

<%= @story.content %> <br/><br/>

<% @story.comments.each do |comment| %>
  <b>Comment:</b>
  <%= comment.content %>
<% end %>

<%= form_for([@story, @story.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit "Add" %>
  </div>
<% end %>

In StoriesController I did same thing but now I can't understand how to do it.

def create
  @categories = Category.all
  @story = current_user.stories.build(params[:story])
end

Upvotes: 0

Views: 162

Answers (2)

user1107922
user1107922

Reputation: 610

I'm very stupid! I missed has_many comments in user model.. but now the problem is still here because the content of the comment can't be saved in DB and the table Comments is empty.

@comment.save is false in my case

def create
  @story = Story.find(params[:story_id])
  if current_user
    @comment = current_user.comments.create(params[:comment])
  end

  if @comment.save
    flash[:success] = "Successfull added comment"
    redirect_to story_path(@story)
  else
    render 'new'
  end
end

Upvotes: 0

Don Leatham
Don Leatham

Reputation: 2704

The error: "undefined method for nil:NilClass" always seems to bite me when I'm assuming that a model/class has been instantiated when it hasn't. If you are getting this error on the line: 

@comment = current_user.comments.create(params[:comment])

I would guess that your code is being run without a logged-in user, so current_user is nil. The structure of your @comment code indicates that you are only going to let registered users create comments, so you might try this approach:

if current_user
  @comment = current_user.comments.create(params[:comment])
else
  redirect :root, :notice => "Sorry you must be registered and logged in to comment"
end

Hope this helps.

Upvotes: 0

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