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I want to know about following concepts:

I have a model named MyModelName. I am using postgres database server and rails-3. I want to do some task with it as mentioned below-

@ruby_variable_1 = MyModelName.where(:field_name_1 => value_on_field)
@ruby_variable_2 = @ruby_variable_1.where(:field_name_2 => value_on_field)

I want to use 2nd variable which is recordset of my model (here MyModelName), So please tell me how to do it.

I tried on sandbox and getting this error
I know this is possible but how

I have its alternate way also via loop, but I don't want to use that as it is not a good concepts.

NoMethodError: undefined method `where' for Array:0x00000004e32c00

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This is off topic here and should be migrated to StackOverflow (admins will migrate, so please don't double post) – thorsten müller Apr 3 at 12:49
Hello and Welcome to Programmers. Please read the faq as implementation specific questions are off-topic here. Please do not try to circumvent question bans on Stack Overflow by posting here. Instead read this. Have a please day. – World Engineer♦ Apr 3 at 12:58

closed as off topic by thorsten müller, World Engineer♦ Apr 3 at 12:56

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