[#516] Fix error cannot run command rails generate administrate:install

[nguyen7thai]

#516

[markmercedes]

Adding this second validation to this line might be a better idea in my opinion:

controller.starts_with?(namespace.to_s) && !controller.end_with?('/')

It removes the complexity of having to run throughout the collection twice, also it won't allow any possible sub-route root to mess the generation up

[nguyen7thai]

Good idea, but in that case, the block would return a nil value (we are using method map here) and we have to remove the nil value in the collection thereafter?

[nickcharlton]

Hi! Thanks for this PR. I'd not actually seen this when I went ahead and did #713, which purports to fix the referenced issue. I'm going to close this for now, but feel free to reopen if it doesn't.