Add new post form

app/controllers/posts_controller.rb

@@ -0,0 +1,20 @@
+class PostsController < ApplicationController
+  before_action :authenticate_user!
+
+  def create
+    post = Post.new(post_params)
+    post.user_id = current_user.id
+
+    if post.save
+      render json: { status: 'success' }
+    else
+      render json: { status: 'error', message: post.errors.full_messages }
+    end
+  end
+
+  private
+
+    def post_params
+      params.require(:post).permit(:title, :description, :board_id)
+    end
+end