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Merge pull request #11205 from Gawyn/using-preferred-find_by-syntax-i…

…n-guides

Using preferred find_by syntax in guides
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2 parents 683d719 + 93fd780 commit 1feab8dac560289acb378783d545c7a4ba884f42 @carlosantoniodasilva carlosantoniodasilva committed Jul 1, 2013
@@ -410,7 +410,7 @@ class ApplicationController < ActionController::Base
# logging out removes it.
def current_user
@_current_user ||= session[:current_user_id] &&
- User.find_by_id(session[:current_user_id])
+ User.find_by(id: session[:current_user_id])
end
end
```
@@ -517,7 +517,7 @@ method. Here's an example:
```ruby
class UserMailer < ActionMailer::Base
def receive(email)
- page = Page.find_by_address(email.to.first)
+ page = Page.find_by(address: email.to.first)
page.emails.create(
subject: email.subject,
body: email.body
@@ -253,7 +253,7 @@ user = User.first
```ruby
# return the first user named David
-david = User.find_by_name('David')
+david = User.find_by(name: 'David')
```
```ruby
@@ -270,7 +270,7 @@ Once an Active Record object has been retrieved, its attributes can be modified
and it can be saved to the database.
```ruby
-user = User.find_by_name('David')
+user = User.find_by(name: 'David')
user.name = 'Dave'
user.save
```
@@ -279,7 +279,7 @@ A shorthand for this is to use a hash mapping attribute names to the desired
value, like so:
```ruby
-user = User.find_by_name('David')
+user = User.find_by(name: 'David')
user.update(name: 'Dave')
```
@@ -297,7 +297,7 @@ Likewise, once retrieved an Active Record object can be destroyed which removes
it from the database.
```ruby
-user = User.find_by_name('David')
+user = User.find_by(name: 'David')
user.destroy
```
@@ -2171,7 +2171,7 @@ You're not limited to the functionality that Rails automatically builds into ass
class Customer < ActiveRecord::Base
has_many :orders do
def find_by_order_prefix(order_number)
- find_by_region_id(order_number[0..2])
+ find_by(region_id: order_number[0..2])
end
end
end
@@ -592,7 +592,7 @@ def index
end
def show
- @book = Book.find_by_id(params[:id])
+ @book = Book.find_by(id: params[:id])
if @book.nil?
render action: "index"
end
@@ -607,7 +607,7 @@ def index
end
def show
- @book = Book.find_by_id(params[:id])
+ @book = Book.find_by(id: params[:id])
if @book.nil?
redirect_to action: :index
end
@@ -626,7 +626,7 @@ def index
end
def show
- @book = Book.find_by_id(params[:id])
+ @book = Book.find_by(id: params[:id])
if @book.nil?
@books = Book.all
flash.now[:alert] = "Your book was not found"

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