From 8a7acc066e89338245d47c0934adb173c4629572 Mon Sep 17 00:00:00 2001
From: Gokul <gokul@mallow-tech.com>
Date: Mon, 31 Oct 2016 18:57:00 +0530
Subject: [PATCH 1/3] Create Update without validation.md

---
 rails_tip/Update without validation.md | 34 ++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 rails_tip/Update without validation.md

diff --git a/rails_tip/Update without validation.md b/rails_tip/Update without validation.md
new file mode 100644
index 0000000..a60d323
--- /dev/null
+++ b/rails_tip/Update without validation.md	
@@ -0,0 +1,34 @@
+---
+title: Disable model validation on update
+tip-number: 30
+tip-username: Gokul M
+tip-username-profile: https://github.com/mgokul595
+tip-description: Updating values in the Database without doing the model validation
+
+---
+
+
+
+
+Generally update_attributes method in rails will validate all fields eventhough it is not being updated.
+
+So, If we need to update the fields without doing such validations we can go with the below two methods:
+
+1. Updating the column one by one using update_attribute:
+
+```ruby
+@object.update_attribute(first_name: 'Rails')
+```
+
+This will validate & update only the name field and skip validation for other fields. 
+Now, Just think what if you need to update more columns. It cause more queries to be executed instead of updating in single query.
+
+2. Updating the column values without any validation:
+
+```ruby
+@object.assign_attributes(first_name: 'Ruby', last_name: 'Rails')
+@object.save(validate: false)
+
+```
+
+Using above method the validation of the columns can be skipped.

From d5e38d07b6256300f8f9be7d142d00e9b1697ee8 Mon Sep 17 00:00:00 2001
From: Gokul <gokul@mallow-tech.com>
Date: Mon, 31 Oct 2016 19:09:20 +0530
Subject: [PATCH 2/3] Update and rename Update without validation.md to
 2016-10-31-Update without validation.md

---
 ...ut validation.md => 2016-10-31-Update without validation.md} | 2 ++
 1 file changed, 2 insertions(+)
 rename rails_tip/{Update without validation.md => 2016-10-31-Update without validation.md} (99%)

diff --git a/rails_tip/Update without validation.md b/rails_tip/2016-10-31-Update without validation.md
similarity index 99%
rename from rails_tip/Update without validation.md
rename to rails_tip/2016-10-31-Update without validation.md
index a60d323..00bfda8 100644
--- a/rails_tip/Update without validation.md	
+++ b/rails_tip/2016-10-31-Update without validation.md	
@@ -32,3 +32,5 @@ Now, Just think what if you need to update more columns. It cause more queries t
 ```
 
 Using above method the validation of the columns can be skipped.
+
+--

From b2b67b740681f60867d469dcecbf8d15fa7f4ec8 Mon Sep 17 00:00:00 2001
From: Gokul <gokul@mallow-tech.com>
Date: Mon, 31 Oct 2016 19:19:58 +0530
Subject: [PATCH 3/3] Create 2016-10-31 Default scope in Rails

---
 2016-10-31 Default scope in Rails | 42 +++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 2016-10-31 Default scope in Rails

diff --git a/2016-10-31 Default scope in Rails b/2016-10-31 Default scope in Rails
new file mode 100644
index 0000000..437a576
--- /dev/null
+++ b/2016-10-31 Default scope in Rails	
@@ -0,0 +1,42 @@
+---
+title: Default scope in Rails
+tip-number: 30
+tip-username: Gokul M
+tip-username-profile: https://github.com/mgokul595
+tip-description: Using default scope in Rails Model
+
+---
+
+```ruby default_scope ``` in Rails will apply the conditions on all queries on the Model.
+
+class Test < ActiveRecord::Base
+  default_scope { where(started: true) }
+end
+
+```ruby
+Test.all # => SELECT * FROM tests WHERE started = true
+```
+
+To using more complex queries inside the ```ruby default_scope ``` you can declare the class method as use it as below:
+
+```ruby
+class Test < ActiveRecord::Base
+  def self.default_scope
+    # Query goes here
+  end
+end
+
+```
+
+
+The default scope is applied on the ```ruby new ``` and ```ruby create ```.
+If we initialize a new object it will set the value of the column to the default value that we specified in the ```ruby default_scope ```.
+
+For Example, 
+
+```ruby
+Test.new # Initializes a Test which contains started=true
+```
+
+So, be careful on using ```ruby default_scope```
+--