Form resulting in blank post with no ID - ruby-on-rails

Question

I am new to Rails and working on creating a generic "facebook" type of app as practice with users and posts associated with each user. However, I'm currently having an issue where I think the form that I am using to create the posts is also being rendered out as a blank post with no post ID where I display all of the posts in a section below. I think that this post is being shown even before it is being saved to the database.
Here is my code in my view:
<div class="newpostcontainer">
<div class="newposttext">
<%= form_for([#user, #user.posts.build]) do |f| %>
<%= f.text_area :post, size: "69x1" %>
</div>
<div class="newpostsubmitbutton">
<%= f.submit %>
</div>
<% end %>
</div>
<% #user.posts.reverse_each do |p| %>
<div class="postedcontainer">
<div class="minipostpic">
<%= image_tag #user.photo.url, width: 32, height: 32 %>
</div>
<div class="nameofposter"><%= #user.name %></div>
<div class="dateofpost"><%= p.created_at%></div>
<div class="postcontent"><%= p.id%></div> <br>
<div class="postcontent"><%= p.post%></div> <br>
<div class="likecommentdelete">
<%= link_to "Delete", [p.user, p], method: :delete %> | Like | Comment
</div>
</div>
<%end%>
</div>
Here is my controller:
def index
#user = User.find(params[:user_id])
#posts = #user.posts.all
end
def create
#user = User.find(params[:user_id])
#post = #user.posts.create!(post_params)
redirect_to user_path(#user)
end
def show
#user = User.find(params[:user_id])
#post = #user.posts.find(params[:id])
redirect_to user_path(#user)
end
def destroy
#user = User.find(params[:user_id])
#post = #user.posts.find(params[:id])
#post.destroy
if #post.destroy
redirect_to user_path(#user)
else
redirect_to users_path
end
end
private
def post_params
params.require(:post).permit!
end
end
And here is my model:
class Post < ActiveRecord::Base
belongs_to :user
has_many :comments
validates_presence_of :post
end
I'm pretty sure the issue has something to do with my form to create the new post because when I remove it or comment it out, the extra blank post with no post ID goes away.
Any thoughts or suggestions?
Thank you!!

Answer 1

I think you need to permit the field values to be posted:
i.e.,
params.require(:post).permit!
should be
params.require(:post).permit(:name, :post)
then only it will POST I think.
Hope it helps :)

Answer 2

This is because of rails 4 strong parameter feature. You need to whitelist your active models parameters. For more details refer to here.
In your case you need to do something like this:
params.require(:post).permit(:post)
where the ":post" inside require is your model and the other one is your permitted field that is your textarea.

Answer 3

Several issues -
Form
<%= form_for([#user, #user.posts.build]) do |f| %>
Why are you building an associative object? #user.posts.build will not persist your data, and will cause all sorts of non-conventional issues I would highly recommending building the posts associative object in your controller's new action before using in the view, so you can do this:
#app/controllers/users_controller.rb
def new
#user = current_user
#user.posts.build
end
<%= form_for #user do |f| %>
Association
You're trying to edit the post attribute with this statement:
<%= f.text_area :post, size: "69x1" %>
This won't work in any circumstance, as :post is an association, not an object. Rails only allows you to change / add attributes to specific objects, which means you'll be better doing something like this:
<%= f.fields_for :posts do |p| %>
<%= p.text_area :title %>
<%= p.text_area :body %>
<% end %>
Strong Params
You're currently permitting all your params? You'll be better doing this:
def post_params
params.require(:user).permit(posts_attributes: [:title, :body])
end
Use Posts Controller
A better way will be to just use the posts_controller, like this:
#app/controllers/posts_controller.rb
def new
#post = Post.new
end
def create
#post = Post.new(post_params)
#post.save
end
#app/views/posts/new.html.erb
<%= form_for #post do |f| %>
<%= f.text_field :title %>
<%= f.text_field :body %>
<% end %>