You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: 20170208162700_fix_project_posts_permissions.rb
    path of file: ./repos/catarse/db/migrate
    
    the code of the file until where you have to start completion: class FixProjectPostsPermissions < ActiveRecord::Migration
  def change
    execute  <<-SQL
    CREATE OR REPLACE FUNCTION public.current_user_has_contributed_to_reward(integer) RETURNS boolean
    LANGUAGE sql STABLE
    AS $_$
        select true from "1".contribution_details c where c.state = any(public.confirmed_states()) and c.reward_id = $1 and c.user_id = current_user_id();
      $_$;


      CREATE OR replace view "1".project_posts_details as 
SELECT pp.id,
    pp.project_id,
    is_owner_or_admin(p.user_id) AS is_owner_or_admin,
    pp.exclusive,
    pp.title,
        CASE
            WHEN pp.recipients = 'public' THEN pp.comment_html
            WHEN pp.recipients = 'backers' AND (is_owner_or_admin(p.user_id) OR current_user_has_contributed_to_project(p.id)) THEN pp.comment_html
            WHEN pp.recipients = 'reward' AND (is_owner_or_admin(p.user_id) OR current_user_has
    
  def change
    execute  <<-SQL
    CREATE OR REPLACE FUNCTION public.current_user_has_contributed_to_reward(integer) RETURNS boolean
    LANGUAGE sql STABLE
    AS $_$
        select true from "1".contribution_details c where c.state = any(public.confirmed_states()) and c.reward_id = $1 and c.user_id = current_user_id();
      $_$;


      CREATE OR replace view "1".project_posts_details as 
SELECT pp.id,
    pp.project_id,
    is_owner_or_admin(p.user_id) AS is_owner_or_admin,
    pp.exclusive,
    pp.title,
        CASE
            WHEN pp.recipients = 'public' THEN pp.comment_html
            WHEN pp.recipients = 'backers' AND (is_owner_or_admin(p.user_id) OR current_user_has_contributed_to_project(p.id)) THEN pp.comment_html
            WHEN pp.recipients = 'reward' AND (is_owner_or_admin(p.user_id) OR current_user_has_contributed_to_reward(pp.reward_id)) THEN pp.comment_html
            ELSE NULL::text
        END AS comment_html,
    pp.created_at,
    delivered_count(pp.*) AS delivered_count,
    open_count(pp.*) AS open_count,
    pp.recipients,
    pp.reward_id
   FROM project_posts pp
     JOIN projects p ON p.id = pp.project_id;

    SQL
  end