Rails 4 Error: How to get parameters from URL

Question

I am fairly new to rails and I am struggling getting the id param out of this url:

http://localhost:3000/subscriberjobs/new?job_id=13

Currently I am using this line of code to get it:

@job = Job.find(params[:id])

This line directs to that:

redirect_to "/subscriberjobs/new?job_id=#{@job.id}"

Any help on how to achieve what I am trying to do is much appreciated!

Navin · Accepted Answer · 2016-09-12 11:31:44Z

1

try this, replace this line

@job = Job.find(params[:id])

with this line

@job = Job.find_by(id: params[:job_id])

and you will get your instance variable @job populated with the record which having job_id.

edited Sep 12, 2016 at 11:31

answered Sep 12, 2016 at 11:14

Navin

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3 Comments

heroxav Over a year ago

Yep, that really should work. But when I am doin this I get this error: ActiveRecord::RecordNotFound in SubscriberjobsController#update Couldn't find Job with 'id'= so it somehow misses it's id in that case: 13

Navin Over a year ago

This is the case where record is not present in your db/table. what you getting? when hitting params

heroxav Over a year ago

I think I know why this does not work. From my new_job form it jumps to this url: http://localhost:3000/subscriberjobs/new?job_id=13. Then after you done the payments it directs to this url: http://localhost:3000/subscriberjobs/1 (which does not work cause this model does not exist) and then checks for the job_id wich is obviously equal to nil

Community · Accepted Answer · 2017-05-23 11:59:58Z

1

Did you try

url    = 'http://www.foo.com?id=4&empid=6'
uri    = URI.parse(url)
params = CGI.parse(uri.query)
# params is now {"id"=>["4"], "empid"=>["6"]}

id     = params['id'].first

You may check another post here for more description.

edited May 23, 2017 at 11:59

CommunityBot

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answered Sep 12, 2016 at 11:15

MKB

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4 Comments

heroxav Over a year ago

Hmmm... that spits out this error: NoMethodError in SubscriberjobsController#update undefined method split' for nil:NilClass`

heroxav Over a year ago

Additionally it makes "id"=>"1"} out of every id

MKB Over a year ago

Then you need to check if the record exists in the database.

heroxav Over a year ago

One thing though. Everytime it jumps to /subscriberjobs/1 after the payment via stripe. The record exists in Jobs

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