diff options
Diffstat (limited to 'railties/lib/rails/generators/rails/model/USAGE')
| -rw-r--r-- | railties/lib/rails/generators/rails/model/USAGE | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/railties/lib/rails/generators/rails/model/USAGE b/railties/lib/rails/generators/rails/model/USAGE index 6574200fbf..145d9ee6e0 100644 --- a/railties/lib/rails/generators/rails/model/USAGE +++ b/railties/lib/rails/generators/rails/model/USAGE @@ -46,26 +46,32 @@ Available field types: `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: + It will generate an `album_id` column. You should generate these kinds of fields when + you will use a `belongs_to` association, for instance. `references` also supports + polymorphism, you can enable 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: + For integer, string, text and binary fields, an integer in curly braces will + be set as the limit: - 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 + `rails generate model user pseudo:string{30}` - Examples: + For decimal, two integers separated by a comma in curly braces will be used + for precision and scale: + + `rails generate model product price:decimal{10,2}` + + You can add a `:uniq` or `:index` suffix for unique or standard indexes + respectively: - `rails generate model user pseudo:string{30}` `rails generate model user pseudo:string:uniq` + `rails generate model user pseudo:string:index` + + You can combine any single curly brace option with the index options: + + `rails generate model user username:string{30}:uniq` + `rails generate model product supplier:references{polymorphic}:index` Examples: |