I would like to use session variables throughout my WebMatrix web pages.
For an unknown reason, they are not available accross the pages (only to the page where they are defined).
In my login page, code section:
if (WebSecurity.Login(userName, password, rememberMe)) {
// Session variable holding the UserType
var db = Database.Open("MyDatabase");
var userTypeData = db.QuerySingle("SELECT Name FROM UserTypes INNER JOIN UserProfiles ON UserProfiles.UserTypeId = UserTypes.UserTypeId WHERE UserId = #0",WebSecurity.CurrentUserId);
Session ["UserType"] = userTypeData.Name;
// Eventual redirection to the previous URL
var returnUrl = Request.QueryString["ReturnUrl"];
if (returnUrl.IsEmpty()) {
Response.Redirect("~/auth/authenticated");
}
else {
Context.RedirectLocal(returnUrl);
}
I get here a "Cannot perform runtime binding on a null reference" hence if there is always a UserType. THis is the fist problem.
In the "authenticated" page where I'm redirected, if I use exactly the same query and session variable definition, I can display it as :
You are a user of type: #Session["UserType"] -> HTML section
On other pages, I'm trying to ´display or hidden (update) buttons` through the session variable.
#if (Session["UserType"]=="here the variable value; a string") {
<a class="linkbutton" href="condoedit?condoId=#condoData.CondoId">Update</a>
}
Button is never displayed as the session variable appears to be empty !!
Change your code to test if there are problems with the query (BTW, use QueryValue instead of QuerySingle if you need only the user name).
Try something like
var db = Database.Open("MyDatabase");
var userTypeData = db.QueryValue("SELECT Name FROM UserTypes INNER JOIN UserProfiles ON UserProfiles.UserTypeId = UserTypes.UserTypeId WHERE UserId = #0",WebSecurity.CurrentUserId);
if (String.IsNullOrEmpty(userTypeData)) {
Session["UserType"] = "IsEmpty";
} else {
Session["UserType"] = userTypeData;
}
and test on other pages if the session variable value is "IsEmpty".
Edit
In the other pages convert to string the session variable value and store it into a local variable
var uType = Session["UserType"].ToString();
When the item is stored in session, it is stored as an object data type, so it will need to be cast back to its original data type if there is no implicit cast between object and the original type. (mikesdotnetting.com)
-> Session["UserType"].ToString()
#if (Session["UserType"].ToString()=="here the variable value; a string") {
<a class="linkbutton" href="condoedit?condoId=#condoData.CondoId">Update</a>
}
Related
i want to use dataprovider to pass data directly into step definition without passing from feature file, as i want to pass null values as well. here is what i am doing.
Scenario: User should get empty field highlight, when that fields is empty and clicked submit. When Submit is clicked after providing values in nethier or either of Reg Id or PC
#Test(dataProvider = "getData")
#When("^Submit is clicked after providing values in nethier or either of Reg Id or PC$")
public void submit_is_clicked_after_providing_values_in_nethier_or_either_of_reg_id_something_or_pc_something(
String regvalue, String pcvalue) throws Throwable {
//code
}
#DataProvider
public Object[][] getData() {
Object[][] data = new Object[3][2]; // 3 is number of combinations and 2 is number of values
// 1st set
data[0][0] = "Username1";
data[0][1] = null;
// 2nd set
data[1][0] = null;
data[1][1] = "Password1";
// 3nd set
data[2][0] = null;
data[2][1] = null;
return data;
}
Error i am getting is
Step [^Submit is clicked after providing values in nethier or either of Reg Id or PC$] is defined with 2 parameters at 'com.commcard.stepdefinition.StepDef.submit_is_clicked_after_providing_values_in_nethier_or_either_of_reg_id_something_or_pc_something(String,String) in file:/D:/Eclipse-Workspace/CucumberProject.CitiCommCard/target/test-classes/'.
However, the gherkin step has 0 arguments.
You can use a yml file as a data-lookup. For JSON style testing I would advocate this. As you can use a regular fixture or build it up mid-process.
So you could have something like this.
Given I have a valid request to create a user
But the username is invalid
Given I have a valid request to create a user
But the username is too short
# yaml file
user:
create:
issues:
username:
invalid: "Can't Use W3!rd char$"
too_short: "usrnm"
Then your steps just use whatever programming language you use and convert the yml into a data lookup (Hash/List), and alter the keys.
i have a database containing Song objects. The song class has > 30 properties.
My Music Tagging application is doing changes on a song on the file system.
It then does a lookup in the database using the filename.
Now i have a Song object, which i created in my Tagging application by reading the physical file and i have a Song object, which i have just retrieved from the database and which i want to update.
I thought i just could grab the ID from the database object, replace the database object with my local song object, set the saved id and store it.
But Raven claims that i am replacing the object with a different object.
Do i really need to copy every single property over, like this?
dbSong.Artist = songfromFilesystem.Artist;
dbSong.Album = songfromFileSystem.Album;
Or are there other possibilities.
thanks,
Helmut
Edit:
I was a bit too positive. The suggestion below works only in a test program.
When doing it in my original code i get following exception:
Attempted to associate a different object with id 'TrackDatas/3452'
This is produced by following code:
try
{
originalFileName = Util.EscapeDatabaseQuery(originalFileName);
// Lookup the track in the database
var dbTracks = _session.Advanced.DocumentQuery<TrackData, DefaultSearchIndex>().WhereEquals("Query", originalFileName).ToList();
if (dbTracks.Count > 0)
{
track.Id = dbTracks[0].Id;
_session.Store(track);
_session.SaveChanges();
}
}
catch (Exception ex)
{
log.Error("UpdateTrack: Error updating track in database {0}: {1}", ex.Message, ex.InnerException);
}
I am first looking up a song in the database and get a TrackData object in dbTracks.
The track object is also of type TrackData and i just put the ID from the object just retrieved and try to store it, which gives the above error.
I would think that the above message tells me that the objects are of different types, which they aren't.
The same error happens, if i use AutoMapper.
any idea?
You can do what you're trying: replace an existing object using just the ID. If it's not working, you might be doing something else wrong. (In which case, please show us your code.)
When it comes to updating existing objects in Raven, there are a few options:
Option 1: Just save the object using the same ID as an existing object:
var song = ... // load it from the file system or whatever
song.Id = "Songs/5"; // Set it to an existing song ID
DbSession.Store(song); // Overwrites the existing song
Option 2: Manually update the properties of the existing object.
var song = ...;
var existingSong = DbSession.Load<Song>("Songs/5");
existingSong.Artist = song.Artist;
existingSong.Album = song.Album;
Option 3: Dynamically update the existing object:
var song = ...;
var existingSong = DbSession.Load<Song>("Songs/5");
existingSong.CopyFrom(song);
Where you've got some code like this:
// Inside Song.cs
public virtual void CopyFrom(Song other)
{
var props = typeof(Song)
.GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance)
.Where(p => p.CanWrite);
foreach (var prop in props)
{
var source = prop.GetValue(other);
prop.SetValue(this, source);
}
}
If you find yourself having to do this often, use a library like AutoMapper.
Automapper can automatically copy one object to another with a single line of code.
Now that you've posted some code, I see 2 things:
First, is there a reason you're using the Advanced.DocumentQuery syntax?
// This is advanced query syntax. Is there a reason you're using it?
var dbTracks = _session.Advanced.DocumentQuery<TrackData, DefaultSearchIndex>().WhereEquals("Query", originalFileName).ToList();
Here's how I'd write your code using standard LINQ syntax:
var escapedFileName = Util.EscapeDatabaseQuery(originalFileName);
// Find the ID of the existing track in the database.
var existingTrackId = _session.Query<TrackData, DefaultSearchIndex>()
.Where(t => t.Query == escapedFileName)
.Select(t => t.Id);
if (existingTrackId != null)
{
track.Id = existingTrackId;
_session.Store(track);
_session.SaveChanges();
}
Finally, #2: what is track? Was it loaded via session.Load or session.Query? If so, that's not going to work, and it's causing your problem. If track is loaded from the database, you'll need to create a new object and save that:
var escapedFileName = Util.EscapeDatabaseQuery(originalFileName);
// Find the ID of the existing track in the database.
var existingTrackId = _session.Query<TrackData, DefaultSearchIndex>()
.Where(t => t.Query == escapedFileName)
.Select(t => t.Id);
if (existingTrackId != null)
{
var newTrack = new Track(...);
newTrack.Id = existingTrackId;
_session.Store(newTrack);
_session.SaveChanges();
}
This means you already have a different object in the session with the same id. The fix for me was to use a new session.
I have a table which gets its data server-side, using custom server-side initialization params which vary depending upon which report is produced. Once the table is generated, the user may open a popup in which they can add multiple additional filters on which to search. I need to be able to use the same initialization params as the original table, and add the new ones using fnServerParams.
I can't figure out how to get the original initialization params using the datatables API. I had thought I could get a reference to the object, get the settings using fnSettings, and pass those settings into a new datatables instance like so:
var oSettings = $('#myTable').dataTable().fnSettings();
// add additional params to the oSettings object
$('#myTable').dataTable(oSettings);
but the variable returned through fnSettings isn't what I need and doesn't work.
At this point, it seems like I'm going to re-architect things so that I can pass the initialization params around as a variable and add params as needed, unless somebody can steer me in the right direction.
EDIT:
Following tduchateau's answer below, I was able to get partway there by using
var oTable= $('#myTable').dataTable(),
oSettings = oTable.fnSettings(),
oParams = oTable.oApi._fnAjaxParameters(oSettings);
oParams.push('name':'my-new-filter', 'value':'my-new-filter-value');
and can confirm that my new serverside params are added on to the existing params.
However, I'm still not quite there.
$('#myTable').dataTable(oSettings);
gives the error:
DataTables warning(table id = 'myTable'): Cannot reinitialise DataTable.
To retrieve the DataTables object for this table, please pass either no arguments
to the dataTable() function, or set bRetrieve to true.
Alternatively, to destroy the old table and create a new one, set bDestroy to true.
Setting
oTable.bRetrieve = true;
doesn't get rid of the error, and setting
oSettings.bRetrieve = true;
causes the table to not execute the ajax call. Setting
oSettings.bDestroy = true;
loses all the custom params, while setting
oTable.bDestroy = true;
returns the above error. And simply calling
oTable.fnDraw();
causes the table to be redrawn with its original settings.
Finally got it to work using fnServerParams. Note that I'm both deleting unneccessary params and adding new ones, using a url var object:
"fnServerParams": function ( aoData ) {
var l = aoData.length;
// remove unneeded server params
for (var i = 0; i < l; ++i) {
// if param name starts with bRegex_, sSearch_, mDataProp_, bSearchable_, or bSortable_, remove it from the array
if (aoData[i].name.search(/bRegex_|sSearch_|mDataProp_|bSearchable_|bSortable_/) !== -1 ){
aoData.splice(i, 1);
// since we've removed an element from the array, we need to decrement both the index and the length vars
--i;
--l;
}
}
// add the url variables to the server array
for (i in oUrlvars) {
aoData.push( { "name": i, "value": oUrlvars[i]} );
}
}
This is normally the right way to retrieve the initialization settings:
var oSettings = oTable.fnSettings();
Why is it not what you need? What's wrong with these params?
If you need to filter data depending on your additional filters, you can complete the array of "AJAX data" sent to the server using this:
var oTable = $('#myTable').dataTable();
var oParams = oTable.oApi._fnAjaxParameters( oTable );
oParams.push({name: "your-additional-param-name", value: your-additional-param-value });
You can see some example usages in the TableTools plugin.
But I'm not sure this is what you need... :-)
I am trying to develop a search filter and making use of the HTML5 history API to reduce the number of requests sent to the server. If the user checks a checkbox to apply a certain filter I am saving that data in the history state, so that when the user unchecks it I am able to load the data back from the history rather than fetching it again from the server.
When the user checks or unchecks a filter I am changing the window URL to match the filter that was set, for instance if the user tries to filter car brands only of a certain category I change the URL like 'cars?filter-brand[]=1'.
But when mutiple filters are applied I have no way of figuring out whether to load the data from the server or to load it from the history.
At the moment I am using the following code.
pushString variable is the new query string that will be created.
var back = [],forward = [];
if(back[back.length-1] === decodeURI(pushString)){ //check last back val against the next URL to be created
back.pop();
forward.push(currentLocation);
history.back();
return true;
}else if(forward[forward.length-1] === decodeURI(pushString)){
forward.pop();
back.push(currentLocation);
history.forward();
return true;
}else{
back.push(currentLocation); //add current win location
}
You can check if your filters are equivalent.
Comparing Objects
This is a simple function that takes two files, and lets you know if they're equivalent (note: not prototype safe for simplicity).
function objEqual(a, b) {
function toStr(o){
var keys = [], values = [];
for (k in o) {
keys.push(k);
values.push(o[k]);
}
keys.sort();
values.sort();
return JSON.stringify(keys)
+ JSON.stringify(values);
}
return toStr(a) === toStr(b);
}
demo
Using the URL
Pass the query part of the URL (window.location.search) to this function. It'll give you an object you can compare to another object using the above function.
function parseURL(url){
var obj = {}, parts = url.split("&");
for (var i=0, part; part = parts[i]; i++) {
var x = part.split("="), k = x[0], v = x[1];
obj[k] = v;
}
return obj;
}
Demo
History API Objects
You can store the objects with the History API.
window.history.pushState(someObject, "", "someURL")
You can get this object using history.state or in a popState handler.
Keeping Track of Things
If you pull out the toStr function from the first section, you can serialize the current filters. You can then store all of the states in an object, and all of the data associated.
When you're pushing a state, you can update your global cache object. This code should be in the handler for the AJAX response.
var key = toStr(parseUrl(location.search));
cache[key] = dataFromTheServer;
Then abstract your AJAX function to check the cache first.
function getFilterResults(filters, callback) {
var cached = cache[toStr(filters)]
if (cached != null) callback(cached);
else doSomeAJAXStuff().then(callback);
}
You can also use localstorage for more persistent caching, however this would require more advanced code, and expiring data.
I am new to Zend and very keen to learn, so I would really appreciate some help and guidance.
I am trying to create a 'method in a class' that will save the session variables of product pages visited by members to a site i.e
i,e examplesite com/product/?producttype= 6
I want to save the number 6 in a session variable. I also do not want to have a global session for the entire site; I just want it for selected pages. So, I guess I have to have Zend_Session::start() on the selected page; but I am not clear how this should be done.
Should I instantiate it in the page view page. i.e products page or do this in the indexAction() method for the products page. I have attempted to instantiate it below but it did not work.
public function rememberLastProductSearched()
{ //my attempt to start a session start for this particular page.
Zend_Session::start();
}
$session->productSearchCategory = $this->_request->getParam('product-search-category');
return" $session->productSearchCategory ";
}
else
{
//echo " nothing there
return " $session->productSearchCategory";
//";
}
}
With the rememberLastProductSearched() method I was trying to get the method to first check whether the user had searched for a new product or just arrived at the page by default. i.e whether he had used the get() action to search for a new product. If the answer is no, then I wanted the system to check whether their had been a previous saved session variable. so in procedural syntax it would have gone like this:
if(isset($_Get['producttype']))
{
//$dbc database connection
$producttype = mysqli_real_escape_string($dbc,trim($_GET['producttype']));
}
else
if(isset($_SESSION['producttype'])){
$producttype = mysqli_real_escape_string($dbc,trim($_SESSION['producttype']));
}
Can you please help me with the Zend/oop syntax. I am totally confused how it should be?
you're asking about simple work flow in an action, it should begin something like:
//in any controller
public function anyAction()
{
//open seesion, start will be called if needed
$session = new Zend_Session_Namespace('products');
//get value
$productCategory = $this->getRequest()->getParam('producttype');
//save value to namespace
$session->productType = $productCategory;
//...
}
now to move this off to a separate method you have to pass the data to the method...
protected function rememberLastProductSearched($productType)
{
//open seesion, start will be called if needed
$session = new Zend_Session_Namespace('products');
$session->productType = $productType;
}
So now if you want to test for presence of a value...
//in any controller
public function anyAction()
{
//open seesion, call the namespace whenever you need to access it
$session = new Zend_Session_Namespace('products');
if (!isset($session->productType)) {
$productCategory = $this->getRequest()->getParam('producttype');
//save value to session
$this->rememberLastProductSearched($productCategory)
} else {
$productCategory = $session->productType;
}
}
That's the idea.
Be mindful of your work flow as it can sometimes be very simple to inadvertently overwrite your session values.
$session = new Zend_Session_Namespace("productSearch");
if ($this->getRequest()->getParam('producttype')) { //isset GET param ?
$session->productType = $this->getRequest()->getParam('producttype');
$searchedProductType = $session->productType;
} else { //take the session saved value
if ($session->productType) {
$searchedProductType = $session->productType;
}
}
//now use $searchedProductType for your query