Access params with wildcard in Rails - ruby-on-rails

Question

At the moment I have a form_tag which contains inputs and puts these inputs into parameters.
I want to be able to loop over them in the controller action.
I've tried getting all params excluding all the usual params (action, controller, model name etc.) and then using a wildcard like params[:prop*].
Here is the offending form inputs:
%input{:name => "userEmails", :id =>"userEmails", :type => "hidden", :value => ""}
-#all_properties.each do |prop|
%input{:name => "prop"+prop.name+"checkbox", :type => "checkbox", :id => "prop"+prop.name+"checkbox"}
#{prop.name}
%input{:name => "prop"+prop.name, :type => "text", :id => "prop"+prop.name}
These show up in params like {"propProperty1checkbox"=>"on", "propProperty1" => "testing", "propAnotherPropertycheckbox" => "on", "propAnotherProperty" => "another test value"} etc.
I'm unsure how to access these as the names of the properties can change and so need to be accessed abstractly.

Answer 1

You can use #select on params hash to filter only the params that are interesting for you:
params = {"user_id"=>1,
"propProperty1checkbox"=>"on",
"propProperty1"=>"testing",
"propAnotherPropertycheckbox"=>"on",
"propAnotherProperty"=>"another test value"
}
params.to_h.select{|key, value| key =~ /^prop/}
#=> {"propProperty1checkbox"=>"on",
#"propProperty1"=>"testing",
#"propAnotherPropertycheckbox"=>"on",
#"propAnotherProperty"=>"another test value"}
EDIT
Example from the comment:
[13] pry(main)> {"utf8"=>"✓", "_method"=>"put", "authenticity_token"=>"xxxxx", "userEmails"=>"teste#test.com,test2#test.com,test4#test.com,fasd#gmail.com", "propProperty1checkbox"=>"on", "propProperty1"=>"3", "propAnotherPropertycheckbox"=>"on", "propAnotherProperty"=>"4", "commit"=>"Submit", "Application"=>"8", "Company"=>"1" }.to_h.select{|k, v| k =~ /^prop/}
=> {"propProperty1checkbox"=>"on",
"propProperty1"=>"3",
"propAnotherPropertycheckbox"=>"on",
"propAnotherProperty"=>"4"}

Answer 2

You can try something like:
input(name: "props[#{pro_name}][checkbox]"...)
input(name: "props[#{pro_name}][text]"...)
Then, in your controller:
def method
props = params[:props]
props.each do |property_name, values|
chk = values[:checkbox]
text = values[:text]
end
end