Performance Issue

Rails
1

Hi,

I am having one performance issue.
I want to retrieve different kind of data from a single table with
different conditions.

here is example

@licences = Licence.scoped_by_user_id(10)
usedpermlicence = @licences.scoped_by_status_and_licence_type(1, 0)
usedtemplicence = @licences.scoped_by_status_and_licence_type(1, 1)
remainlicence = @licences.scoped_by_status_and_licence_type(0, 0)
remaintemplicence = @licences.scoped_by_status_and_licence_type(0,

Please let me know is there any way to store all the licences into one
object and can retrieve data from this object without any db query.

Thanks in Advance
Hitesh R.

2

Sure:

usedpermlicence = @licences.select {|o| o.status == 1 && o.licence_type

0}
usedtemplicence = @licences.select {|o| o.status == 1 && o.licence_type

1}

etc…

You can treat @licences as an array and just select the items you want.
One
DB query (which you’re already doing) and a quick bit of filtering.

http://ruby-doc.org/core/classes/Array.html#M002191

Cheers,

Andy

3

Thanks Andy,

For ur quick reply and valuable suggestion.
I followed your suggestion and It improved performance and decrease the
no. of db queries.

Thanks

Andy J. wrote:

Sure:

usedpermlicence = @licences.select {|o| o.status == 1 && o.licence_type

0}
usedtemplicence = @licences.select {|o| o.status == 1 && o.licence_type

1}

etc…

You can treat @licences as an array and just select the items you want.
One
DB query (which you’re already doing) and a quick bit of filtering.

class Array - RDoc Documentation

Cheers,

Andy