sessions

Faruk S. Can farukscan at gmail.com
Wed Mar 12 17:19:09 UTC 2014


hi
i cannot sustain a session.
i login to my app. it shows my login name as i programmed.
when i refresh the page it stays there.
but when i refresh for the second time my session name and
other things goes away and instead i see what is there for the
not loginned case.

I think i miss something in hunchentoot session hadling.

;all html generated by a macro:

(defmacro ff (tag)
  `(defun ,tag (&rest c)
     (with-output-to-string (*standard-output*)
       (format t "<~a ~{~a='~a' ~}> ~{~a ~}</~a>" ',tag (car c) (cdr c)
',tag))))

;;defining all tag functions:
(progn
  (ff html)
  (ff title)
  (ff head)
  (ff meta)
  (ff link)
  (ff style)
  (ff script)
  (ff body)
  (ff span)
  (ff div)
  (ff section)
  (ff p)
  (ff form)
  (ff input)
  (ff button)
  (ff textarea)
  (ff a)
  (ff h1)
  (ff h2)
  (ff h3)
  (ff h4)
  (ff h5)
  (ff h6)
  (ff ol)
  (ff ul)
  (ff li))

;authentication utilities used by the home page function at the bottom:

(defun signed-in-p ()
  (if (and (boundp '*session*) (session-value '*signed-in *session*))
      t
      nil))

(defun signed-up-p (x y)
  (if (with-connection *conn1spec*
         (query  (:select 'username 'password :from 'users.users
                          :where (:and (:= 'username x)
                                       (:= 'password y)))))
    t
    nil))

(defun sign-in ()
  (let ((username (parameter "username"))
(password (parameter "password")))
    (if (signed-up-p username password)
      (progn
        (start-session)
        (setf (session-value '*username) username)
        (setf (session-value '*signed-in) t)
        (morph-status-plate (session-value '*username)))
      (with-output-to-string (s)
        (princ (morph-sign-in-form) s)
        (princ "No record found!" s)
        (princ (a (list :href "/form-sign-up") "Sign up") s)
         ))))
;the data base querying functions are working correctly
;views generated:

(defun morph-write-button ()
  (div (list :style "border:1px solid; float:left;")
     (a (list :href "/writingp") "write")))

(defun morph-status-plate (username)
   (div (list :id "status-plate" :style "border:1px solid; float:left;")
     (span () "123 users online")
     (span () username)
     (button (list :onclick "ajaxlogout()") "logout")))

(defun morph-sign-in-form ()
  (div (list :id "sign-in-form" :style "border:1px solid; float:left;")
   (form (list :method "" :action "")
    (input (list :id "username" :type "input" :name "username"))
    (input (list :id "password" :type "input" :name "password"))
    (input (list :onClick "ajaxsignin()" :type "button" :value "login")))))

;at last
;the page i generate as home page:
(div (list :id "sign-in-form-or-status-plate"
                      :style "height: 45px; border: 1px solid; float:left;")
                (if (signed-in-p);;;;;;
                  (with-output-to-string (s)
                    (start-session)
                    (princ (morph-status-plate (session-value '*username))
s)
                    (princ (morph-write-button) s))
                  (with-output-to-string (s)
                    (princ (morph-sign-in-form) s)
                    (princ (a (list :href "form-sign-up") "Sign up") s))))
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