ROR passing array as parameter

Question

I am trying pass array as parameter to my controller method but it's not working for me. I tried it in following ways:

http://localhost:3000/med?med_ids=[2,1]

I tried in following way as well and its working for me. I just want to know any good solution

http://localhost:3000/manufacturer/1/medicines?medicine_id[]=2&medicine_id[]=1

inside controller:

@val = params[:medicine_id]

values are coming but I want to make it as array.

Need some help. Thank you.

You could JSON encode your array and then parse it from your controller — Joseph Le Brech
– Joseph Le Brech, Commented Jul 23, 2015 at 13:24
If I am reading question correctly, ?medicine_id[]=2&medicine_id[]=1 is working for you. And this is the correct way to pass array in query string — RAJ
– RAJ, Commented Jul 23, 2015 at 13:31

RAJ · Accepted Answer · 2015-07-23 13:33:11Z

6

You cannot get array from query string like this:

?med_ids=[2,1]

If you want to pass an array in query string, you need to pass it as follow (as you have mentioned in question):

?medicine_id[]=2&medicine_id[]=1

As an answer to your question: 2nd way is absolutely good way and correct way. Go with it.

answered Jul 23, 2015 at 13:33

RAJ

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Comments

Sudhir · Accepted Answer · 2015-07-23 13:37:18Z

3

If you are trying to send parameter like [1,2], then in your controller you will get like "[1,2]",

and you need to parse for get in original array like: JSON.parse "[1,2]"

ans: [1,2] and class Array

answered Jul 23, 2015 at 13:37

Sudhir

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Steffan Perry · Accepted Answer · 2017-05-11 18:37:45Z

0

You can optionally build your controllers to parse a delimited array:

?medicine_ids=1,2

controller:

medicine_ids = params[:medicine_ids].split(',')

answered May 11, 2017 at 18:37

Steffan Perry

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