Use POST for routes that mutate the state of the database, or for logging in.įor Project 1.2, you will have to deal with the same-origin policy. Use GET for routes that should be crawl-able by a search engine. Use simple, singular names for your models in camel case, like StoreProduct. This useful to look at during development! The file db/schema.rb tells you what the current shape of your database is. Run the migrations on Heroku (you have to do this every time you add a migration): Run the migrations locally (you have to do this every time you add a migration): Rails generate model Product name:string description:text "/item/:item_id" => "controller_name#action_name"Īccess a route parameter, GET query argument, or POST data in a controller or view: Set up a new route with a parameter (in config/routes.rb): "/my/route" => "controller_name#action_name" Set up a new route (in config/routes.rb): Rails generate controller controller_name action_name For our team, this has been far more preferable.Related Resources Ruby on Rails: Hints and Gotcha'sĬreate a controller/action/view/route all in one step: Refer to the gist for the full code.Īnd again: I know it isn’t nice to patch ActiveRecord internals, so it’s up to you to weigh doing so against the hassle of needlessly dealing with SQL structure dumps. You should see that the generated db/schema.rb file now includes all necessary schema information, and your models will be able to locate your namespaced tables after loading it. Table(table_name, stream) unless ignored?(table_name)įoreign_keys(tbl, stream) unless ignored?(tbl)Īnd that’s it! Include the above in your Rails configuration, and run rake db:schema:dump (or rake db:migrate or a similar task). This adds the following lines near the top of the file, just after the extensions: # Overridden in order to call new method “schemas”. Next we’ll override the dump method to insert a new schemas method into the process: Create this file in your application and require it in an appropriate place in the application boot process (I’ll leave that location up to you): Note that this has been tested with Rails 6.0, the latest major version of Rails.įirst we will tap into the ActiveRecord::SchemaDumper class. It’s actually not that much work see this gist for the full code. Unfortunately it only supports Rails ~> 4.2, so that’s out if you are on a more modern version of Rails. I know that patching Rails internals is not nice, but it’s better than SQL structure dumps!ģ) There is a gem to do exactly this. It is far nicer to stick with the default Ruby format of the schema dump.Ģ) Patch ActiveRecord so that the schema dump file includes the schema creation and specifies the appropriate schemas when creating each table. There are valid reasons to use a SQL structure dump, such as for including functions and triggers, but in this case we can get away without doing so. This is far more verbose, is not database (or often database version) agnostic, and leads to additional churn in the file. The Optionsġ) Update your Rails application’s configuration to dump the schema as a SQL file ( db/structure.sql) via rake db:structure:dump. Obviously, this is bad enough by itself, but it’s even worse if you have two tables with the same name in different schemas. for the salesforce.order table, and your models will not be able to locate their tables after loading the database schema from the file. You will end up with, for example, create_table "order". If you have a Rails app with a multiple-schema database and you run rake db:schema:dump, the resulting db/schema.rb file will not prefix the tables with their schema, such as in the create_table statements. This is likely why Rails does not support it. It’s not that unusual to have multiple schemas in a Rails application, but it is a little unusual to want them included in schema dumps. In addition, there is the standard public schema and a postgis schema. This means that the StoreConnect::Order model is stored in the salesforce database schema with a full name of salesforce.order, and that the StoreConnect::Cart model is stored in the store_connect schema with a full name of store_connect.carts. These tables are stored in the salesforce schema, and other tables that are specific to the local Rails application, such as shopping carts, are stored in the store_connect schema. This isn’t the most common thing to do, but it can sometimes be useful to namespace your database tables within different schemas to keep them separate.įor example, at reinteractive on storeConnect, we have tables that are synced from Salesforce via Heroku Connect. If you have a Ruby on Rails application running with a PostgreSQL database, then you may be aware that both tools support the usage of ActiveRecord models being backed by database tables stored in different schemas. Patching Rails Database Schema Dumps to Support Multiple PostgreSQL Schemas
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