Undefined method 'match' with the Linkedin Gem

Rails
1

I have been building a small app to import a cv from linkedin.
Displaying the information is working out perfect, but saving it to
the database is turning out to be a challenge.

The full source code is at https://github.com/brunoamaral/lwork and
the source code of the import function is as follows:

def importcv

@user = User.find_by_username(params[:username])
client = LinkedIn::Client.new(@linkedin_apikey, @linkedin_secret)

t = current_user.authentications.find_by_provider(‘linked_in’)
client.authorize_from_access(t.token, t.secret)

@cv = client.profile(:fields =>
[:headline, :first_name, :last_name, :educations, :positions])

@user.positions << @cv.positions
@user.positions.save

end

When running it, I get the message:
undefined method `match’ for LinkedIn::Position::Resource:Class

The model adds the following to users:
has_many :positions, :class_name => LinkedIn::Position::Resource

What bugs me more is that I don’t even know where to start looking for
an answer to this, so any hints on where to search and what to look
for are welcome.

2

On 22 April 2011 18:09, Bruno A. [email protected] wrote:

I have been building a small app to import a cv from linkedin.
Displaying the information is working out perfect, but saving it to
the database is turning out to be a challenge.
…
When running it, I get the message:
undefined method `match’ for LinkedIn::Position::Resource:Class

match is a method of String, so I wonder whether it is getting called
on the above type instead of a string. The error should show a stack
trace which should show you which line of your code it is failing on.
Post the complete error and trace if you cannot work it out.

Colin

3

The error message mentions line 44:
@user.positions << @cv.positions
@user.positions.save

the full output is here:
http://dl.dropbox.com/u/109441/errormessagerails.html

@cv.positions is an array, so from what you’re telling me it should
not use “match” as a method.

4

On 22 April 2011 22:15, Bruno A. [email protected] wrote:

Please don’t top post, it makes it difficult to follow the thread.
Insert your reply at appropriate points in previous message. Thanks.

The error message mentions line 44:
@user.positions << @cv.positions
@user.positions.save

the full output is here: http://dl.dropbox.com/u/109441/errormessagerails.html

Don’t you get a full error trace, in the server terminal window or
log/development.log?

@cv.positions is an array, so from what you’re telling me it should
not use “match” as a method.

You realise that, if user.positions is also an array that
@user.positions << @cv.positions
will attempt to add the whole array @cv.positions as a single element
on the end of @user.positions. Not append the contents of
@cv.positions as multiple new elements. Are you sure you do not want
@user.positions += @cv.positions

I don’t know what @user.positions is of course so I may be
misinterpreting something.

Colin

5

On 23 April 2011 13:59, Bruno A. [email protected] wrote:

@user.positions << @cv.positions
will attempt to add the whole array @cv.positions as a single element
on the end of @user.positions. Not append the contents of
@cv.positions as multiple new elements. Are you sure you do not want
@user.positions += @cv.positions

cv.positions is the information the user has in the experience bit of
their LinkedIn profile.
composed of user_id: integer, company: string, end_month: string,
end_year: string, start_month: string, start_year: string

Do you mean each member of the array (or association) positions is one
of those. I am a bit confused by the line @user.positions.save. Can
you do save on an array? Or is positions a single record, in which
case it should be called position, singular.

Is there a Position model then, with cv has_many positions ?
What happens if you do something like
@cv.postions.each do |position|
@user.positions << position
end

Can you post the model definitions? Not all the methods just the
definitions and associations and so on.

Have you used ruby-debug or a similar to technique to break in and
check that all the variables are as you expect.

Colin

6

On Apr 23, 9:24am, Colin L. [email protected] wrote:

Don’t you get a full error trace, in the server terminal window or
log/development.log?

I do have a full trace at http://pastie.org/1825323

and the server log is http://pastie.org/1825336

You realise that, if user.positions is also an array that
@user.positions << @cv.positions
will attempt to add the whole array @cv.positions as a single element
on the end of @user.positions. Not append the contents of
@cv.positions as multiple new elements. Are you sure you do not want
@user.positions += @cv.positions

cv.positions is the information the user has in the experience bit of
their LinkedIn profile.
composed of user_id: integer, company: string, end_month: string,
end_year: string, start_month: string, start_year: string

Using += resulted in the exact same error message, which is strange I
was hoping to at least get more information from rails. Maybe it means
the problem is not the line 44 but something else.

7

adding ruby-debug froze the import page, but I will keep trying to
check the variables as you said.

about the model, the source code is in the github project
https://github.com/brunoamaral/lwork/blob/master/app/models/user.rb

class User < ActiveRecord::Base

has_many :authentications
has_many :positions, :class_name => LinkedIn::Position::Resource

8

On Apr 23, 5:09pm, Bruno A. [email protected] wrote:

adding ruby-debug froze the import page, but I will keep trying to
check the variables as you said.

about the model, the source code is in the github
projecthttps://github.com/brunoamaral/lwork/blob/master/app/models/user.rb

class User < ActiveRecord::Base

has_many :authentications
has_many :positions, :class_name => LinkedIn::Position::Resource

This looks wrong, since :class_name is supposed to be a string and
LinkedIn::Position::Resource isn’t

Fred

9

On Apr 23, 10:12pm, Frederick C. [email protected]
wrote:

has_many :authentications
has_many :positions, :class_name =>LinkedIn::Position::Resource

This looks wrong, since :class_name is supposed to be a string
andLinkedIn::Position::Resource isn’t

However, not using it only returns

Position(#2174910600) expected, got
LinkedIn::Position::Resource(#2173297260)

I am thinking about taking a different approach, since I can’t figure
out how to save the information I need in one go the other option is
to try to build an import form.