web applications - How to get parameters in an HTML page passed from a snippet with Lift framework -
i want develop lift web app, i've index page has in here body:
<div id="main" class="lift:surround?with=default&at=content"> <div> app </div> <div> <form method="post" class="lift:dumbform"> <table> <tr><td> email:</td> <td><input name="email" type="text"></td></tr> <tr><td> password:</td> <td><input name="pwd" type="password"></td></tr> <tr><td> name:</td> <td><input name="name" type="text"></td></tr> <tr><td><input type="submit" value="sign in"></td> <td><input type="reset" value="reset"></td></tr> </table> </form> </div> </div> with corresponding snippet (file "dumbform.scala"):
package code package snippet import net.liftweb._ import http._ import scala.xml.nodeseq /** * snippet grabs query parameters * form post , processes them */ object dumbform { def render(in: nodeseq): nodeseq = { // use scala for-comprehension evaluate each parameter { r <- s.request if r.post_? // make sure it's post name <- s.param("name") // name field } { s.notice("nom: "+name) s.redirectto("/hello") } // pass through html if don't post , // parameters in } } i want pass attribute "name" snippet view, html page, ("hello.html") , display name.
but don't know how pass "name" parameter snippet view (hello.html), , how parameter in view?!
for moment, hello.html has:
<body> <p> hello ... (you must display name!)</p> </body>
to looking do, point form directly @ ever hello.html mounted. assuming hello in same path.
dumbform.html
<div id="main" class="lift:surround?with=default&at=content"> <div> app </div> <div> <form method="post" action="hello"> <table> <tr><td> email:</td> <td><input name="email" type="text"></td></tr> <tr><td> password:</td> <td><input name="pwd" type="password"></td></tr> <tr><td> name:</td> <td><input name="name" type="text"></td></tr> <tr><td><input type="submit" value="sign in"></td> <td><input type="reset" value="reset"></td></tr> </table> </form> </div> </div> hello.html
<div data-lift="showhellosnippet"> <p>hello <span name="paramname"></span></p> </div> snippet
class showhellosnippet { def render = { "@paramname" #> s.param("name") } } the more lift way thought, use lift's shtml form elements:
dumbform.html
<div id="main" class="lift:surround?with=default&at=content"> <div> app </div> <div> <form method="post" data-lift="formhandlersnippet"> <table> <tr><td> email:</td> <td><input name="email" type="text"></td></tr> <tr><td> password:</td> <td><input name="pwd" type="password"></td></tr> <tr><td> name:</td> <td><input name="name" type="text"></td></tr> <tr><td><input id="submitbutton" type="submit" value="sign in"></td> <td><input type="reset" value="reset"></td></tr> </table> </form> </div> </div> snippet
class myformresponse( var email:string="", var password:string="", var name:string ="") class formhandlersnippet { def render = { val responseform = new myformresponse() "@email" #> shtml.text("", (valuesupplied) => { responseform.email = valuesupplied }) & "@pwd" #> shtml.password("", (valuesupplied) => { responseform.password = valuesupplied }) & "@name" #> shtml.text("", (valuesupplied) => { responseform.name = valuesupplied }) & "#submitbutton" #> shtml.submit("sign in", () => { s.redirectto("/hello", () => showhellosnippet.myvals(full(responseform))) }) } } hello.html
<div data-lift="showhellosnippet"> <p>hello <span name="paramname"></span></p> </div> snippet
object showhellosnippet { object myvals extends requestvar[box[myformresponse]](empty) } class showhellosnippet { def render = "*" #> { showhellosnippet.myvals.get.map { r => "@paramname" #> r.name } } } this have form set values on object, stateful redirect sets values in showhellosnippet use after page has been redirected. alternate both, use ajax display values on same page.
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