Issue with Rails migrations Postgresql - ruby-on-rails

Question

I have a strange problem with rails migrations.
My db/migrate folder contains migration files and all worked fine.
But a few moment ago, I created a new file using rails g migration MigrationName, it generated a new file. then when i had runned rake db:migrate it rollbacks all and my schema version became 0.
Now when i run rake db:migrate it does nothing whereas db/migrate contains all my migrations.
i tried rake db:reset db:drop db:create db:migrate but no migrations was performed. However it says "migrations are pending run rake db:migrate RAILS_ENV=development" what i've done in vain.
I'm confused. Is anyone ever had this problem?
i've just tried RAILS_ENV=development rake db:migrate --trace and it returns:
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Execute db:load_config
** Execute db:migrate
** Invoke db:_dump (first_time)
** Execute db:_dump
** Invoke db:schema:dump (first_time)
** Invoke environment
** Invoke db:load_config
** Execute db:schema:dump
Running:
rake db:migrate:status
gives me:
database: database_development
Status Migration ID Migration Name
--------------------------------------------------
up 000 ********** NO FILE **********
down 20150613120151 Devise create users
down 20150613120734 Devise create admins
down 20150614114949 Create gender
down 20150614115642 Create events
down 20150614142610 Create multi events
I tried so many things:
- i dropped my database, restarted postgresql and run again rake db:setup db:migrate. rake db:migrate:status tells me that migrations are pending but it wont migrate.
it makes me crazy...
EDIT
I manually updated schema_migrations in database adding the timestamps
schema:load worked, but when i run rake db:migrate to check if its all good, it rolledback..
EDIT
if i manually fill schema_migrations version in database with timestamps, when i do rake db:schema:status they are all to up and my new migration to down, but if i do rake db:migrate it tries to revert as if i wanted to run rake db:rollback

Answer 1

So i fixed my issue.
In fact, i'm using dotenv to manage environment vars for development, and in my .env file i defined a var called VERSION to describe the API version...
That is the bug !
When i removed it, rake was able to migrate as expected.

Answer 2

I am not sure this will work for, but can you please try the following things,
First, drop tables
rake db:drop
Second, Delete/Remove db/schema.rb file
Third, create database
rake db:create
Fourth, run migration again
rake db:migrate
Please let me know if this help you a bit, good luck :)