Rails schema not updating Bisexual teen dating sites
The existing environment might be your local development environment, or a colleague’s. It might be someone to whom you are distributing code.All these have something in common: they are already using your application with an existing database.Announcement (2017-05-07): now read-only since I unfortunately do not have the time to support and maintain the forum any more.Please see rubyonrails.org/community and ruby-lang.org/en/community for other Rails- und Ruby-related community platforms.This method is faster, cleaner, and avoids all the ugly failures that can crop up in an extensive migration chain.What seems like two different solutions is actually two parts of the same solution.Used *rake *to see the resulting routes: [[email protected] x]$ rake routes Prefix Verb URI Pattern Controller#Action toys GET /toys(.:format) toys#index POST /toys(.:format) toys#create new_toy GET /toys/new(.:format) toys#new edit_toy GET /toys/:id/edit(.:format) toys#edit toy GET /toys/:id(.:format) toys#show PATCH /toys/:id(.:format) toys#update PUT /toys/:id(.:format) toys#update DELETE /toys/:id(.:format) toys#destroy 5.
It may also need to seed the database with some defaults or dummy data. In ages past, we use migrations for new environments.
, the object would not be marked dirty and therefore would not be saved.
I cannot show my exact data here because it is private, but here's an example of the before and after which did not trigger a dirty state and commit.
This first experiment used (a) the simplest "instructions" I could find (basically, Hassan's); (b) a streamlined version of the "Getting Started Guide" process for setting up a Rails app (but - this is crucial - *omitting* the step of running the migrator); and (c) a pre-existing ("legacy") database that conforms to the Rails naming conventions.
For the benefit of other Rails newbies (or oldbies) that need to build apps on existing DBs, a play-by-play of what I did follows. Created new Rails app, *x*: [[email protected] rails_eval]$ rails new x 2.
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Perhaps helpful, check out brilliant Ryan Bates' Rails Cast: Liz I know how to *connect *a Rails app to a PG database. You do need a primary key, and it's *easiest* with an integer, and *easiest* if the name is "id", but not necessary; I've got an app using string ids based on a legacy db schema (from what was previously a Java app). I'd suggest just trying it :-) The "schemas independently modified over time" part presages some future pain, I would think; make sure you have *really good* test coverage. -- Hassan Schroeder ------------------------ [email protected] twitter: @hassan Consulting Availability : Silicon Valley or remote the database contents (table definitions), so that the app can read from and write to the tables.