Hi all,
In my controller, I have an action to render JSON string containing
current user''s account information, except for his ID and hashed
password. This is the snippet:
# Fetch the account information of the current user
def fetch_data
record = User.find session[:user_id]
render :json =>
{
:success => true,
:data => (record.to_json(:except => [:id, :password]))
}
end
It does not work. The :data attribute contains a JSON string instead of
an object.
Sample output:
{"success":true,"data":"{\"name\":\"The
Administrator\",\"username\":\"admin\",\"role\":\"admin\"}"}
How can I fix this?
Thanks.
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- On Sun, Jan 24, 2010 at 9:24 PM, Andree Surya <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> Hi all, > > In my controller, I have an action to render JSON string containing > current user''s account information, except for his ID and hashed > password. This is the snippet: > > # Fetch the account information of the current user > def fetch_data > > record = User.find session[:user_id] > >First, the above statement returns an instance of User,> render :json => > { > :success => true, > :data => (record.to_json(:except => [:id, :password])) > } > end > > It does not work. The :data attribute contains a JSON string instead of > an object. > Sample output: > > {"success":true,"data":"{\"name\":\"The > Administrator\",\"username\":\"admin\",\"role\":\"admin\"}"} > > How can I fix this? > >The above seems correct based on your render statement. What''s the problem? -Conrad> Thanks. > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Conrad Taylor wrote:> The above seems correct based on your render statement. What''s the > problem? > > -ConradThe data attribute should be an object, not a string. Let''s compare the difference with the following snippet: render :json => { :success => true, :data => record # Without to_json method } The output will be: (the data attribute is an object) {"success":true,"data":{"name":"The Administrator","username":"admin","role":"admin","id":1,"password":"d033e22ae348aeb5660fc2140aec35850c4da997"}} Instead of: (the data attribute is a string) {"success":true,"data":"{\"name\":\"The Administrator\",\"username\":\"admin\",\"role\":\"admin\"}"} The problem is, I want to hide several attributes from the output, and the only method that I know is to use :except parameter from to_json method. So, my objective is to get the output similiar to output #1, but without the ID and password attribute. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On Sun, Jan 24, 2010 at 10:10 PM, Andree Surya <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> Conrad Taylor wrote: > > The above seems correct based on your render statement. What''s the > > problem? > > > > -Conrad > > The data attribute should be an object, not a string. > Let''s compare the difference with the following snippet: > >From the JSON specification, http://www.json.org/, an object in JSON consists of name/value pairs. The object here is "data" and you should be able to easily access this information on the client side. Next, you can limit which fields get returned from a SQL query using ''find(:all, :select => "arg1, arg2, ...", ... )''. Finally, the easiest way to convert an AR instance to JSON is to use to_json method on the instance (i.e. object.to_json). Otherwise, you can write a simply method, to_hash or to_h, which returns the hash of the AR. Then you''ll have something like this: def to_hash { :name => self.name, :username => self.username, :role => self.role } end render :json => { :success => true, :data => record.to_hash } Good luck, -Conrad> render :json => > { > :success => true, > :data => record # Without to_json method > } > > The output will be: (the data attribute is an object) > {"success":true,"data":{"name":"The > > Administrator","username":"admin","role":"admin","id":1,"password":"d033e22ae348aeb5660fc2140aec35850c4da997"}} > > Instead of: (the data attribute is a string) > {"success":true,"data":"{\"name\":\"The > Administrator\",\"username\":\"admin\",\"role\":\"admin\"}"} > > The problem is, I want to hide several attributes from the output, and > the only method that I know is to use :except parameter from to_json > method. > > So, my objective is to get the output similiar to output #1, but without > the ID and password attribute. > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.