CODEWITHSUNDEEP
rubymechanize
Arnold Roa
Arnold Roa

Reputation: 7708

Ruby Mechanize how to send multiple params with same name

I'm trying to do a post request with uses multiple values for same name, html is similar to:

<input name="opt[]" value="1"/>
<input name="opt[]" value="2"/>
<input name="opt[]" value="3"/>

With mechanize I'm doing something like:

params = {'opt[]' => [1,2,3]}
agent.post 'url', params

With no luck.

I've tried with other options like opt: [1,2,3] with no luck either.

Upvotes: 1

Views: 511

Answers (2)

engineersmnky
engineersmnky

Reputation: 29308

According to the Documentation for Mechanize and the discussion in this GitHub Issue the proper way to submit these parameters is by using a 2D Array as follows

params = [["opt[]",1],["opt[]",2],["opt[]",3]]
agent.post 'url', params

While reading the GitHub concern it appears that this is a known functional constraint and that they are or are planning on making efforts to resolve this but for the time being this is the proper method of submission. If you would prefer to use a Hash structure manipulation would not be that difficult e.g.

def process_to_mechanize_params(h)
  h.map do |k,v|
    if v.is_a?(Array) 
      v.map {|e| ["#{k}[]",e]}
    else
      [[k.to_s,v]]
    end
  end.flatten(1)
end

Then you can use 

params = {'opt' => [1,2,3],'value' => 22, another_value: 'here'}
process_to_mechanize_params(params)
#=>=> [["opt[]", 1], ["opt[]", 2], ["opt[]", 3], ["value", 22], ["another_value", "here"]]

Hope this helps. As @pguardiario pointed out a String would also be acceptable but I feel it might diminish readability.

Upvotes: 2

pguardiario
pguardiario

Reputation: 54984

You should be able to post them as a string:

agent.post url, 'opt[]=1&opt[]=2&opt[]=3'

Upvotes: 0

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