Using the collect method to collect to a 2 dimensional array

Rails
1

Hi
I am trying to collect name and email of a person to an array (Or
hash?) like
[[name1,emailid],[name2,emailid]…] But I dont know how to do that.
I tried like

email_array =
Contact.get_email_id_and_name_of_contacts(problem.reported_by_id) unless
problem.reported_by_id.blank?

And in Contact class

def self.get_email_ids_of_contacts(contact_id)
return Contact.find_by_id(contact_id).name,
Contact.find_by_id(contact_id).contact_email_addresses.find(:all,
:conditions => [‘contact_email_address_type_id=?’,2]).collect { |mail|
mail.email}
end

  Here I tried to return two value at a time .But not suceeded .How

can I do that?Please help

Sijo

2

On 10 Sep 2008, at 07:24, Sijo Kg wrote:

unless

Collect just bungs whatever your block evaluates to in an array. If
that block evaluates to an array then you’ll get an array of arrays
back.

Fred

3

Sijo,

not sure, but looking at your code it seems you may want to do something
like the following

def self.get_email_ids_of_contacts(contact_id)
contact = Contact.find_by_id(contact_id)

contact.contact_email_addresses.find(:all, :conditions => []).map do
|mail|
[contact.name, mail.email]
end
end

Sijo Kg wrote:

def self.get_email_ids_of_contacts(contact_id)
return Contact.find_by_id(contact_id).name,
Contact.find_by_id(contact_id).contact_email_addresses.find(:all,
:conditions => [‘contact_email_address_type_id=?’,2]).collect { |mail|
mail.email}
end

4

On Sep 11, 6:28 am, Sijo Kg [email protected] wrote:

end
But this does not give array like above?Could you please tell me
where is the fault?A group may have more than one manager and each
manager has more than one email addresses of the above type.That is why
I wrote code like above Groups and Contacts are connected through user
groups (has_many :through relation)

You’re generating these arrays using map but then you’re just throwing
them away (each returns the collection it iterated over. Perhaps you
mean that to be map or inject instead to concatenate the various
arrays produced?

Fred

5

Hi
Lots of thanks for your great reply.This is what i needed.Now it
works. But I have one more problem. I have to find group managers name
and email like above and I tried like below
name_and_email_managers=Group.get_managers_name_and_emails(problem.primary_assignee_group_id)
unless problem.primary_assignee_group_id.blank?

And now in Group class
def self.get_managers_name_and_emails(grp_id)
managers=Group.find_by_id(grp_id).contacts.find(:all,:conditions =>
[‘group_user_type_id = ?’,4])
managers.each do |manager|
manager.contact_email_addresses.find(:all, :conditions =>
[‘contact_email_address_type_id=?’,2]).map do |mail|
[manager.name,mail.email]
end
end
end
But this does not give array like above?Could you please tell me
where is the fault?A group may have more than one manager and each
manager has more than one email addresses of the above type.That is why
I wrote code like above Groups and Contacts are connected through user
groups (has_many :through relation)

Sijo

6

Frederick C. wrote:

On Sep 11, 6:28�am, Sijo Kg [email protected] wrote:

end
� � � � But this does not give array like above?Could you please tell me
where is the fault?A group may have more than one manager and each
manager has more than one email addresses of the above type.That is why
I wrote code like above �Groups and Contacts are connected through user
groups (has_many :through relation)

You’re generating these arrays using map but then you’re just throwing
them away (each returns the collection it iterated over. Perhaps you
mean that to be map or inject instead to concatenate the various
arrays produced?

Fred

Array.partial