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-rw-r--r--guides/source/action_controller_overview.md12
-rw-r--r--guides/source/active_record_validations.md1
-rw-r--r--guides/source/form_helpers.md2
3 files changed, 8 insertions, 7 deletions
diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md
index 8890ea453e..1ca0d9ed55 100644
--- a/guides/source/action_controller_overview.md
+++ b/guides/source/action_controller_overview.md
@@ -1213,12 +1213,12 @@ Create the controller and views.
* `app/views`
```
- errors/
- not_found.html.erb
- unprocessable_entity.html.erb
- server_error.html.erb
- layouts/
- error.html.erb
+ errors/
+ not_found.html.erb
+ unprocessable_entity.html.erb
+ server_error.html.erb
+ layouts/
+ error.html.erb
```
Do not forget to set the correct status code on the controller as shown before.
diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md
index 6f45ca698d..546c0608ee 100644
--- a/guides/source/active_record_validations.md
+++ b/guides/source/active_record_validations.md
@@ -533,6 +533,7 @@ validates :boolean_field_name, presence: true
validates :boolean_field_name, inclusion: { in: [true, false] }
validates :boolean_field_name, exclusion: { in: [nil] }
```
+
By using one of these validations, you will ensure the value will NOT be `nil`
which would result in a `NULL` value in most cases.
diff --git a/guides/source/form_helpers.md b/guides/source/form_helpers.md
index 16fa23c129..cb45e38614 100644
--- a/guides/source/form_helpers.md
+++ b/guides/source/form_helpers.md
@@ -506,7 +506,7 @@ As the name implies, this only generates option tags. To generate a working sele
<%= collection_select(:person, :city_id, City.all, :id, :name) %>
```
-As with other helpers, if you were to use the collection_select helper on a form builder scoped to the @person object, the syntax would be:
+As with other helpers, if you were to use the `collection_select` helper on a form builder scoped to the `@person` object, the syntax would be:
```erb
<%= f.collection_select(:city_id, City.all, :id, :name) %>