I have some code in a seed file that I'd like to alter so that it does not create duplicate records when I run the seed command multiple times. Any way to adapt the code below from my seeds f...

I'm probably misunderstanding exactly how this works, but what's the best way to accomplish this? I have something in mind but it seems quite hacky. I have a set of sample data which I use to test...

I am trying to find the correct syntax to seed a database with test data. I have a foreign key to my product table. It is the category. I have seeded the database with the values for categories, bu...

When i try to do rake db:reset or rake db:drop rake db:create rake db:schema:load rake db:seed I randomly get a NoMethodError: undefined method 'fields' for nil:NilClass when the seed occurs...

I was creating some random samples and plotting them and noticed a strange behavior. Sampled values were different after loading ggplot2: set.seed(111) library(ggplot2) sample(1:10, 10) # [1] 8 4...

I want to randomly select n rows from my data set using the sample() function in R. I was getting different outputs each time and hence used set.seed() function to get the same output. I know that ...

Part of my seeds.rb loads a lot of data into the database. I want to be able to selectively load this data. E.g. $ rake db:seed or $rake db:seed[0] would just load the necessary data to run ...