ActiveModel::UnknownAttributeError in PostsController#create - ruby-on-rails

Question

It was working perfectly fine but now I'm getting this error for some reason?
class Post < ApplicationRecord
belongs_to :user
geocoded_by :address
after_validation :geocode, if: :address_changed?
has_many :rsvps
has_many :users, through: :rsvps
end
form.html.erb
<%= form_with(model: post, local: true) do |form| %>
<% if post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% post.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= form.label :date %>
<%= form.datetime_select :date, id: :post_date %>
</div>
<div class="field">
<%= form.label :name %>
<%= form.text_area :name, id: :post_name %>
</div>
<div class="action">
<%= form.label :address %>
<%= form.text_area :address, id: :post_address %>
</div>
<div class="field">
<%= form.label :user_id %>
<%= form.number_field :user_id, id: :post_user_id, value: current_user.id %>
</div>
<div class="field">
<%= form.label :description %>
<%= form.text_area :description, id: :post_description %>
</div>
<div class="actions">
<%= form.submit %>
</div>
<% end %>
post controller
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
# GET /posts
# GET /posts.json
def index
#posts = Post.all
end
# GET /posts/1
# GET /posts/1.json
def show
#post = Post.find(params[:id])
end
# GET /posts/new
def new
#post = Post.new
end
# GET /posts/1/edit
def edit
unless current_user == #post.user
redirect_back fallback_location: root_path, notice: 'User is not owner'
end
end
# POST /posts
# POST /posts.json
def create
#post = Post.new(post_params)
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: #post }
else
format.html { render :new }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /posts/1
# PATCH/PUT /posts/1.json
def update
respond_to do |format|
if #post.update(post_params)
format.html { redirect_to #post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: #post }
else
format.html { render :edit }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
#post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
#post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:date, :user_id, :description, :name, :address)
end
load_and_authorize_resource
end
migrations
class AddLatitudeAndLongitudeToPost < ActiveRecord::Migration[5.1]
def change
add_column :posts, :latitude, :float
add_column :posts, :longitude, :float
add_column :posts, :address, :string
end
end
posts migration
class CreatePosts < ActiveRecord::Migration[5.1]
def change
create_table :posts do |t|
t.datetime :date
t.string :name
t.integer :user_id
t.text :description
t.timestamps
end
end
end
I'm not sure how it would stop working automatically as there was literally no changes. I was just figuring out why my google static map was getting an error. However I didn't implement any changes so I don't know what could have possibly caused this error? I would appreciate some advice, thank you.

Answer 1

The possible reason for ActiveModel::UnknownAttributeError is when you try to assign an attribute which is not present in the table.
You must have added some attributes to Post model but must have forgotten to run the migration
bundle exec rake db:migrate
Running this command should solve the problem
NOTE: I can see there is a new migration AddLatitudeAndLongitudeToPost which is adding some columns to posts table. Check the migration status with:
bundle exec rake db:migrate:status
Check if you can see same attributes in schema.rb