I'm getting a so called 'StandardError' when I run rake db:migrate. I ran this command:
rake db:migrate
And got this 'StandardError' in a Mac Terminal
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halfer
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Frederick Nielsen
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are you trying to run migrations for a rails app you've cloned from somewhere? or is this a new app you're working on? – eiko Jun 19 '17 at 16:28
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@eiko This is an app I'm working ins – Frederick Nielsen Jun 19 '17 at 17:06
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2Why try to include a screen shot of text when the text itself would be easier to post and easier for us to read? – mu is too short Jun 19 '17 at 17:15
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@muistooshort I was having trouble with making it readable when I posted it directly as code. I don't see it as a big problem though. Hope it's all good. All I want is a comment on how to fix this. – Frederick Nielsen Jun 19 '17 at 17:17
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Yes please, we prefer text. Images are not compatible with clipboards, screen-readers and search engines, and thus make it harder to satisfy our goal of helping as many people as possible. Use the code formatting tool to present console I/O. – halfer Jun 19 '17 at 18:38
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@halfer I will change this in my future posts. Thanks. – Frederick Nielsen Jun 19 '17 at 18:49
1 Answers
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Go through all your migration files in db/migrate and change this line:
class XYZ < ActiveRecord::Migration
to look like this instead:
class XYZ < ActiveRecord::Migration[5.0]
I'm assuming you're working with an old / poorly maintained app. If you're generating migrations yourself and they're not automatically including [5.0] at the end, then you should probably open a second question to figure that part out.
eiko
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