diff options
| -rw-r--r-- | railties/lib/rails/generators/rails/model/USAGE | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/rails/model/USAGE b/railties/lib/rails/generators/rails/model/USAGE index 67f76aad01..c46c86076e 100644 --- a/railties/lib/rails/generators/rails/model/USAGE +++ b/railties/lib/rails/generators/rails/model/USAGE @@ -19,6 +19,55 @@ Description: then the generator will create a module with a table_name_prefix method to prefix the model's table name with the module name (e.g. admin_account) +Available field types: + + Just after the field name you can specify a type like text or boolean. + It will generate the column with the associated SQL type. For instance: + + `rails generate model post title:string body:text` + + will generate a title column with a varchar type and a body column with a text + type. You can use the following types: + + integer + primary_key + decimal + float + boolean + binary + string + text + date + time + datetime + timestamp + + You can also consider `references` as a kind of type. For instance, if you run: + + `rails generate model photo title:string album:references` + + It will generate an album_id column. You should generate this kind of fields when + you will use a `belongs_to` association for instance. `references` also support + the polymorphism, you could enable the polymorphism like this: + + `rails generate model product supplier:references{polymorphic}` + + You can also specify some options just after the field type. You can use the + following options: + + limit Set the maximum size of the field giving a number between curly braces + default Set a default value for the field + precision Defines the precision for the decimal fields + scale Defines the scale for the decimal fields + uniq Defines the field values as unique + index Will add an index on the field + + Examples: + + `rails generate model user pseudo:string{30}` + `rails generate model user pseudo:string:uniq` + + Examples: `rails generate model account` |