CODEWITHSUNDEEP
ruby-on-railsactiverecord
Matt Jones
Matt Jones

Reputation: 59

Rails 3 ActiveRecord Query Syntax

EDIT

Here's the working syntax...

Model.where('name like ?', "%#{q}%").where('value > ?', c)

or

Model.where("name like (?)","%#{q}%").where("value > ?",c)

Thanks to posters for their help with this.

Original Question

I'm having trouble understanding active record syntax.

Here's what i'm trying to do

q = "John"
c = 50

Model.where('name like ? AND value > ?', "%#{q}%", "%#{c}%")

This is the wrong syntax.

What i'm trying to achieve is

name like John AND value greater than 50

How do i chain different types of queries together in ActiveRecord?

Thanks.

Upvotes: 0

Views: 980

Answers (3)

Kulbir Saini
Kulbir Saini

Reputation: 3915

For Rails 3 using AREL,

ut = User.arel_table
users = User.where(ut[:name].matches("%#{q}%").and(ut[:value].gt(c)))
# SELECT "users".* FROM "users" WHERE ("users"."name" LIKE '%John%' AND "users"."value" > 50)

Upvotes: 1

James Mitch
James Mitch

Reputation: 549

Don't quote q and c:

Model.where('name like ? AND value > ?', q, c)

Rails automatically converts the variables to an appropriate string for you.

Chaining refers to chaining of the where(), select(), order() functions, eg, this is equivalent to above:

Model.where('name like ?', q).where('value > ?', c)

If you want to include the % wildcard for the like bit only, you can do:

Model.where('name like ?', "%#{q}%").where('value > ?', c)

Upvotes: 4

Amar
Amar

Reputation: 6942

You can try Model.where("name like (?)","%#{q}%").where("value > ?",c). Or used scope to help further to easy to chain

Upvotes: 1

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