ruby - rails layout not showing -

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I upgraded one of my apps to Rail 2.0.2 in 2.3.2. Start searching However, once I start running any page, the page will be displayed but it does not present any layout code. Provide any standard tags such as head, body that is in the layout. It seems that the layout is closed in any way. I checked the error log and there was no complaint on the layout. Has anyone seen this?

It may be that you override the start () in your controller so that the layout is ignored has gone.

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