Deleting table from schema - Rails

Question

I want to delete a table in my schema. I created the database when I first started the project and want the table removed. What is the best way of doing this?

I tried rails g migration drop table :installs but that just creates a empty migration?

Schema:

create_table "installs", force: :cascade do |t|
    t.string   "email",                  default: "", null: false
    t.string   "encrypted_password",     default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.datetime "created_at",                          null: false
    t.datetime "updated_at",                          null: false
  end

add_index "installs", ["email"], name: "index_installs_on_email", unique: true
add_index "installs", ["reset_password_token"], name: "index_installs_on_reset_password_token", unique: true

Possible duplicate of [Rails DB Migration - How To Drop a Table?](http://stackoverflow.com/questions/4020131/rails-db-migration-how-to-drop-a-table) — Paul Fioravanti, Aug 02 '16 at 03:11
I'd say that it isn't quite a duplicate in that this is a question about the schema (even if that isn't what should be edited). — jonlink, Feb 04 '17 at 16:10

score 51 · Accepted Answer · edited Jun 05 '20 at 10:46

51

If you create an empty migration by running:
rails g migration DropInstalls
or:
rails generate migration DropInstalls

You can then add this into that empty migration:

class DropInstalls < ActiveRecord::Migration
  def change
    drop_table :installs
  end
end

Then run rake db:migrate in the command line which should remove the Installs table

Note: db/schema.rb is an autogenerated file. To alter the db structure, you should use the migrations instead of attempting to edit the schema file.

edited Jun 05 '20 at 10:46

saurabh

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answered Aug 02 '16 at 03:10

Luka Kerr

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This answer would be more complete if it pointed out that the schema is an autogenerated file and therefore the wrong thing to be looking at. – jonlink Feb 04 '17 at 16:12

Deleting table from schema - Rails

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