Flowdock
method

from

Importance_2
Ruby on Rails latest stable (v4.0.2) - 2 notes - Class: ActiveRecord::QueryMethods
from(value, subquery_name = nil) public

Specifies table from which the records will be fetched. For example:

Topic.select('title').from('posts')
#=> SELECT title FROM posts

Can accept other relation objects. For example:

Topic.select('title').from(Topic.approved)
# => SELECT title FROM (SELECT * FROM topics WHERE approved = 't') subquery

Topic.select('a.title').from(Topic.approved, :a)
# => SELECT a.title FROM (SELECT * FROM topics WHERE approved = 't') a
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February 20, 2012
0 thanks

How to user method 'from'

example

User.from('posts').to_sql
# => "SELECT `users`.* FROM posts"
February 20, 2012
0 thanks

How to user method from'

example

User.from('posts').to_sql
# => "SELECT `users`.* FROM posts"