I have a search page that contains a simple form with a single text
field and submit button. On submit a search is performed using the
value from the textfield as a param and the results are displayed.
Easy so far except that I want to show the same page again i.e
search.html with no results -> search html with results. I have
struggled with this for a while but finally got it working by making
the snippet a stateful one but I don't really understand why it would
have to be stateful to work as I don't need to remember the results
between requests.
Am I going about the the wrong way? In MVC land we'd show the initial
search page with an empty results table and on submit pop the results
into a list and add to the model which would be rendered by jsp tags.
Code below which is not pretty and gets results from a Solr engine as
xml:
<lift:surround with="default" at="content">
<div>
<lift:PropertySearch.search form="POST">
<div id="search">
<s:searchField/><s:submit/>
</div>
<s:theresults>
<table>
<thead><td>Id</td><td>Name</td><td>Location</td><td>Homepage</
td><td>Smoking</td><td>Pets</td></thead>
<tbody><result:list><tr><td><r:id/></td><td><r:name/></
td><td><r:location/></td><td><r:url/></td><td><r:smoking/></
td><td><r:pets/></td></tr></result:list></tbody>
</table>
</s:theresults>
</lift:PropertySearch.search>
</div>
</lift:surround>
--------------
class PropertySearch extends StatefulSnippet {
var searchTxt = ""
var results = List[HashMap[String,String]]() ::: Nil
var dispatch : DispatchIt = {
case "search" => search _
}
def search(xhtml: NodeSeq): NodeSeq = {
def processSearch() = {
results = List[HashMap[String,String]]() ::: Nil
Log.info("Running camel route direct:querySolr to find docs")
val p = RouteBuilderHelper.getTemplate
p.start
var resp = p.sendBodyAndHeader("direct:querySolr",
"direct:querySolr", HttpProducer.QUERY, "q=" + searchTxt)
val x1 = RouteBuilderHelper.camelResponseToXml(resp)
Log.info("Received: " + x1)
Log.info("resul...@numfound=" + x1 \ "result" \ "@numFound")
if (hasResult(x1)) {
Log.info("found matches")
val xmlResults = x1 \ "result"
Log.info(xmlResults)
for(result <- xmlResults \\ "doc") {
val attrMap = new HashMap[String, String]
for(str <- result \\ "str") {
val attrName = (str \ "@name").text
val attrVal = str.text
Log.info(attrName + "=" + attrVal)
attrMap += (attrName -> attrVal) // add to map
}
for(i <- result \\ "int") {
val attrName = (i \ "@name").text
val attrVal = i.text
Log.info(attrName + "=" + attrVal)
attrMap += (attrName -> attrVal) // add to map
}
for(i <- result \\ "bool") {
val attrName = (i \ "@name").text
val attrVal = i.text
Log.info(attrName + "=" + attrVal)
attrMap += (attrName -> attrVal) // add to map
}
results = results ::: List(attrMap) // add to list
}
} else {
Log.info("No matches")
}
p.stop
Log.info("Finished results: " + results)
}
bind("s", xhtml,
"searchField" -> SHtml.text(searchTxt, searchTxt = _),
"theresults" -> results.flatMap(r => bind("r", chooseTemplate
("result","list", xhtml),
"id" -> r
("id"),
"name" -> r
("name"),
"location" -> r
("location"),
"url" -> r("url"),
"smoking" -> r
("smoking"),"pets" -> r("pets")
)),
"submit" -> SHtml.submit("Search", processSearch)
)
}
}
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