I'm following along with some tutorials and they are teaching how to create and run migrations. All has been working so far but I have run in to a problem. But now when i have come back to it the migration will not work in the development database. I used rake db:migrate RAILS_ENV=production to see if my migrations work and on that database it can go through all the migrations and back down again with no problems are errors but when I run rake db:migrate RAILS_ENV=development it pauses for a few seconds then returns me to the console awaiting a command. No errors are shown or nothing is returned to show what it has done and when checking the DB nothing has changed. What can this be?
Use --trace
rake db:migrate --trace
Show your database.yml file please.
Related
I cloned my project. Bundled with "bundle install", then run "rake db:migrate". I am getting this error: (when I run the rails server and open my browser to localhost:3000) "Migrations are pending; run 'bin/rake db:migrate RAILS_ENV=development' to resolve this issue."
I checked all migrations one by one and all were executed without errors. Also no errors were shown after the execution of "rake db:migrate".
This is what I see when I execute "rake db:migrate:status"
I am on development environment. Please let me know if you need any other information.
I also tried "bundle exec rake db:migrate", and "bundle exec rake db:migrate:reset" as "burninggramma" suggested.
Any clues what causes the error?
Interesting. Did you run rake db:create? Assuming you are using sqlite3, do this:
rm -f db/*.sqlite3
rake db:create
RAILS_ENV=development bundle exec rake db:migrate
rails s -e development
Also, can you list the contents of your config/database.yml file?
Edit: Warning! Obviously, you will lose your existing data.
After running the migrate command, I still had the same error.
What worked for me was to just stop the rails server and start it again.
List your executed migrations with rake db:migrate:status and look if every migration was executed. You can try to cancel your migration with rake db:abort_if_pending_migrations and try to migrate again.
1. Maybe its default in ruby2/rails4 but have you tried: bundle exec rake db:migrate?
2. Another option would be resetting the whole database - use with CAUTION! resets all the data as well - bundle exec rake db:migrate:reset
+) I would just make sure that you are executing everything in the same development env:
RAILS_ENV=development bundle exec rake db:migrate:reset
RAILS_ENV=development bundle exec rails s
Running rake db:migrate RAILS_ENV=test did it for me
I had the same error in the browser, but upon closely looking at the error message, I noticed some how I had an extra white space in the migrate comment and post files. Once I removed it, it worked perfectly.
Open the database and click schema_migration table. The migrations will be listed as below.
Sort the version column and find the latest migration you want to go back. Delete or Insert a new one. Rails keeps all the migration history in this table, so you can adjust the migration history to you liking.
I got the same error working on the Learn Enough to Be Dangerous Rails tutorial. I'm using Git Bash terminals on a Windows 10 machine. The error showed up in the terminal where I'm running guard, after I tried to migrate my db using the command (in another terminal):
$ bundle exec rake db: migrate:
After trying the solution offered by #lewstherin, I still got the same error. I tried the command:
$ rails test
And got the explicit and helpful warning:
Migrations are pending. To resolve this issue, run:
bin/rails db:migrate RAILS_ENV=test
I ran the command:
$ bin/rails db:migrate RAILS_ENV=test
and now I'm working again.
For me i just had to migrate for the error:
rake db:migrate --trace
By setting false to config.active_record.migration_error in development.rb might make it workable but i wouldn't recommend it.
Here's what worked for me:
-gem install rails -v 4.1.0
Inside Gemfile:
-gem 'rails', '4.1.0'
(replace the newer/older with this)
Do bundle install and update
-bundle install
-bundle update
In your application.rb :
Remove/Comment - config.active_record.raise_in_transactional_callbacks = true
run bundle rake:
-bundle exec rake db:migrate
Refresh your page and the error should be gone.
Two reasons 'db:migrate:reset' did not work for me
1) loosing data
2) we moved from php to rails, so we had an existing DB and the migrations were written on top of it not from the scratch
So What I tried is to update the 'scheema_migrations'(mysql) table with the list of migrations(just version values) that I was really sure were already run on my db(development), this can be lil time consuming process but it works. I would not attempt this on production though.
I'm guessing the error is that you are creating a table that already exists, I had this problem before.
Step 1
look into the error when you rake dv:migrate
Step 2
go to the model where this table is created
Step 3
add drop_table :[YOUR TABLE] right before the create_table :[YOUR TABLE]
Step 2
run rake db:migrate
Step 3
remove the drop_table once the your migration is done
I had the same problem in genieacs and this code helped:
rake db:drop rake db:create rake db:schema:load RAILS_ENV=development
rake db:migrate rails s -e development
You can always run rake db:reset
I appear to have a circular issue in regards to Ruby on Rails migration procedure. I am following the introduction article and I have reached the point when I need to create my first table.
I have ran the following,
[tims#web2 working_ror]# rails generate model Homepage first_name:string last_name:string email:string message:text
invoke active_record
create db/migrate/20131119203948_create_homepages.rb
create app/models/homepage.rb
invoke test_unit
createtest /models/homepage_test.rb
createtest /fixtures/homepages.yml
I then proceeded with the migration,
[tims#web2 working_ror]# rake db:migrate
== CreateHomepages: migrating ================================================
-- create_table(:homepages)
-> 0.0493s
== CreateHomepages: migrated (0.0494s) =======================================
, however, when I run my application I see the following message,
Migrations are pending; run 'bin/rake db:migrate RAILS_ENV=development' to resolve this issue.
but, IF I run the above,
[tims#web2 working_ror]# rake db:migrate RAILS_ENV=development
[tims#web2 working_ror]#
and the message continues ...
I have spent considerable amount of time researching forums in-which the closest I could find was to drop and re-build everything, which have done the following.
rake db:drop
rake db:create
rake db:migrate
and the results are the same.
You need to do
bundle exec rake test:prepare
or
bundle exec rake db:test:prepare
and then
bundle exec rake db:migrate
before running the specs
Cheers
cited from : Why am I asked to run 'rake db:migrate RAILS_ENV=test'?
you can do
bundle exec rake test:prepare
In Rails 4.1+, they deprecated db:test:prepare
You can now just use:
ActiveRecord::Migration.maintain_test_schema!
If you need to do it manually
rake db:schema:load RAILS_ENV=test
and then
bundle exec rake db:migrate
try
In RAILS_ROOT/config/environments/development.rb Set the following setting to false:
config.active_record.migration_error = false#:page_load
One weird trick that you can use when your migrations are screwed (file deleted, manually renamed, etc.)
Fire up your favourite DB admin tool (eg. PGAdmin3) and browse to the database in question.
Look for a table called schema_migrations and browse its content. It should have a single column called version. This field is used by Rails to check whether migrations are up to date.
Make sure that your migration timestamps corresponds with the data in this column. If you have deleted an older migration, delete the corresponding timestamp.
Check to make sure that table doesn't already exist:
type - rails dbconsole
type - .tables (check to see if there was an error during the rake db:migrate that has the table name like -- create_table(:test) rake aborted!)
If you see the table name after running the .tables in the console type - drop table TABLENAME;
Then .quit to go back to the branch and run the rake db:migrate command again.
this was what i did:
rails db:environment:set RAILS_ENV=test
If you need to do it manually
rake db:schema:load RAILS_ENV=test
and then
bundle exec rake db:migrate
Thanks to Ahmed Ali....... your comment was helpful.
I know that I can run specific migrations:
rake db:migrate:up VERSION=20080906120000
But can I run a specific migration against my test database? Will the following work?
RAILS_ENV=test rake db:migrate:up VERSION=20080906120000
In theory, running the migrations in default mode (which should affect the development database) and then running rake db:test:prepare should get the job done, but I found something strange with my test database after doing that, and I need to run a specific migration on the test database to aid my troubleshooting.
I'd just try out the above rake command, except I'm in the middle of a long data seeding run on my development database, and I can't risk the migration interfering with that, so I figured I'd see if anyone knows the answer before I can determine it myself. :)
In different order:
rake db:migrate:up VERSION=20080906120000 RAILS_ENV=test
I have two instances of my app: one for development, one for production. My development database is called snip_development and my production database is called snip.
I've been doing migrations all along in my development environment and it's been going just fine. I recently created a production instance of my app but rake db:migrate doesn't seem to have any effect. After I run rake db:migrate and log into my database server, I can see that snip_development has all the tables I expect it to but snip doesn't have any tables at all.
I suspect the problem is that rake db:migrate is running on snip_development instead of snip and that's why I'm not seeing anything happen.
How do I get my migrations to work on my production database?
Sometimes I forget about Google. The answer is this:
rake db:migrate RAILS_ENV=production
For me the answer above not works. I have to add bundle exec to make it works.
bundle exec rails db:migrate RAILS_ENV=production
I have two instances of my app: one for development, one for production. My development database is called snip_development and my production database is called snip.
I've been doing migrations all along in my development environment and it's been going just fine. I recently created a production instance of my app but rake db:migrate doesn't seem to have any effect. After I run rake db:migrate and log into my database server, I can see that snip_development has all the tables I expect it to but snip doesn't have any tables at all.
I suspect the problem is that rake db:migrate is running on snip_development instead of snip and that's why I'm not seeing anything happen.
How do I get my migrations to work on my production database?
Sometimes I forget about Google. The answer is this:
rake db:migrate RAILS_ENV=production
For me the answer above not works. I have to add bundle exec to make it works.
bundle exec rails db:migrate RAILS_ENV=production