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params instead contains a hash of hashes, a construction we first saw in Section 4.3.3, which introduced the strategically named params variable in a console session. The debug information above shows that submitting the form results in a user hash with attributes corresponding to the submitted values, where the keys come from the name attributes of the input tags seen in Listing 7.17; for example, the value of

<input  id=  "user email"  name= "user[email]"  size= "30"  type= "text"  />

 

with name "user[email]" is precisely the email attribute of the user hash.

                   Although the hash keys appear as strings in the debug output, internally Rails uses symbols, so that params[:user] is the hash of user attributes—in fact, exactly the attributes needed as an argument to User.new, as first seen in Section 4.4.5 and  appearing in Listing 7.21. This means that the line

@user = User.new(params[ :user ] )

       

 

         is equivalent to

@user = User .new ( name:  "Foo Bar",  email:  "foo@invalid",
password: "foo",  password confirmation: "bar")
 
 
 
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Anil  Bist

Skills    Ruby On Rails

Qualifications :- High School - SLV, College/University - Graphic Era Deemed Univ University,
Location :-Dehradun,Dehradun,Uttarakhand,India
Description:-

I started my Professional Journey in 2006 with one of the Web Development Company in Bangalore and my 1st framework was "Ruby on Rail" as Web development and delivered around 5+ Projects using this platform. Then came another dimension as JEE/Sturst framework, Gradually I realized that I want to build something on my own and give my passion and energy on creating something different a
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