ruby on rails - Reset the database , remove the seeds.rb data from database -


how remove seeds.rb data database , added data in seeds.rb though changed ,it not working !!!, how remove data present in database , entered through seeds.rb file ?

if have data seed.rb file in database, should type rake db:seed again after updating seed.rb file.

add line: modelname.delete_all before creating new records of model.

however, if have other data in database, choose 1 of solutions below:

  • manualy remove data using sql query

  • before line of creating records, add lines removes them. example:

    mymodel.where(name: "foo").destroy_all mymodel.create(name: "foo")

  • use env variable in seed.rb file switch mode:

    if env['seedmode'] == 'removedata'   #add removing code here else   #here should normal seed code

then run seedmode='removedata' rake db:seed


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