I am iterating through some data and generating parameterized URL links based on some conditions like this:
finishedHTML.append("<a href=\"http://" + domain + "&service=" + allEvents[eventCounter].EventService +"&day="+ offSet+(-1 * i) +"\"><img src=\"/info.jpg\" alt=\"Info\"/>");
I had the beginning of my application checking for URL parameters when the page was loaded/refreshed, and take some action depending on if the parameters were there and what they were.
However, I added a # to the beginning of the paramters, so the page wouldn't need to be refreshed, but now it's not triggering the function that checks the URL.
My question is how can I trigger an event in GWT when a user clicks a link? Do I need to generate GWT controls, and link a click handler? Is it possible to setup an event that fires when the URL is changed???
UPDATE:
Adam answered part of the initial question, but I can't get the querystring after "#". Is there a better way than the function below:
public static String getQueryString()
{
return Window.Location.getQueryString();
}
In other words, if I enter example.com?service=1 I get service=1 as my querystring. If I enter example.com#?service=1, I get a null value for the querystring..
Use History.addValueChangeHandler( handler ), and create a handler to catch the URL changes.
There's no need for click handlers etc., any change of the "hash" part in the URL will be sufficient.
EDIT:
See this code example - it will parse URLs of the form http://mydomain/my/path#tok1&tok2&tok3
public void onValueChange(ValueChangeEvent<String> event) {
String hash = event.getValue();
if ( hash.length() == 0 ) {
return;
}
String[] historyTokens = hash.split("&",0);
// do stuff according to tokens
}
(Just responding to your Update)
Have you tried
History.getToken()
to get the value after the "#"?
Related
I am using Volley to submit POST requests to the Facebook Graph API in order to retrieve information about photos and videos from a user account using their BATCH facility so I get it all in one go (rather than making one call for photos, one for videos). The first call works perfectly:
request = new StringRequest(Request.Method.POST,
"https://graph.facebook.com",
future,
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Timber.e("Got VolleyError: %s", error.getMessage());
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; charset=" + getParamsEncoding();
}
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
JSONArray batchRequest = new JSONArray();
JSONObject photoRequest = new JSONObject();
JSONObject videoRequest = new JSONObject();
try {
photoRequest.put("method", "GET");
photoRequest.put("relative_url",facebookUserID + String.format("?fields=photos.limit(%1$s){id,created_time,images{source},picture}",batchSize));
videoRequest.put("method", "GET");
videoRequest.put("relative_url",facebookUserID + String.format("?fields=videos.limit(%1$s){id,created_time,source,picture}",batchSize));
batchRequest.put(photoRequest);
batchRequest.put(videoRequest);
} catch (JSONException e) {
Timber.d("Lifecycle: Exception constructing batch request: %s", e.getMessage());
return null;
}
//try {
// Timber.d("Lifecycle: batchRequest: %s", batchRequest.toString(2));
//} catch (JSONException e) {
// e.printStackTrace();
//}
params.put("batch", batchRequest.toString());
params.put("include_headers", "false");
params.put(FB_BASE_ACCESSTOKEN_KEY, facebookToken);
return params;
}
};
InTouchUtils.addToRequestQueue(request);
// Using a blocking volley request, this chain has been called on a separate async task
// See SO: https://stackoverflow.com/questions/16904741/can-i-do-a-synchronous-request-with-volley
facebookRetval = future.get(VOLLEY_REQUEST_DEFAULT_TIMEOUT, TimeUnit.SECONDS);
returnResult = parseBatchRequest(facebookRetval);
The returned JSON has all the fields I've requested, as well as the pagination block with cursors, and a "next" and/or "previous" url, per the Facebook documentation.
A "next" URL looks something like:
https://graph.facebook.com/v7.0/FACEBOOK_ID_HERE/photos?access_token=ACCESS_TOKEN_HERE&fields=id,created_time,images{source},picture&limit=5&after=AFTER_TOKEN_HERE
There is one of these that gets passed back from the batch operation for each of the original GET operations (assuming both photos and videos have greater than LIMIT items).
Again, this part works fine.
But when I try and use that "next" URL to create another BATCH call, it fails with an "unsupported GET operation" error. This is true even though I can use a standard Volley GET using that exact same URL and it works perfectly.
I have tried using the "https://graph.facebook.com" portion of the above URL as the root of the POST (like what worked in the initial call), and everything after that as the "relative_url" parameter. No go.
Then I tried parsing out just the "after" portion of the "next" url, and constructing a new relative_url that was exactly like the first one, but tacking on a "&after=" + AFTER_VALUE to it as the relative_url. No go - in fact, while this succeeded in making the call, I keep getting the initial batch over and over and over. It is like it is ignoring the "&after=" parameter.
For now I am back to making two GET calls (one for photos, one for videos) just using the NEXT url as long as it keeps being passed back to me. This works fine, but obviously I'm making two network calls instead of the single batch one.
Ideas?
A little more examination revealed that I had made a string parsing error on the subsequent batch operation, and was inadvertently including a forward slash when I should not have been.
For those new to using the batch API, the lesson is that you need "https://graph.facebook.com" as the POST url (no trailing forward slash), then your relative url should NOT start with a forward slash. So the URL I was trying to utilize on calls 2..N like this:
https://graph.facebook.com/v7.0/FACEBOOK_ID_HERE/photos?access_token=ACCESS_TOKEN_HERE&fields=id,created_time,images{source},picture&limit=5&after=AFTER_TOKEN_HERE
should be broken out as:
photoRequest.put("relative_url", "v7.0/FACEBOOK_ID_HERE/photos?access_token=ACCESS_TOKEN_HERE&fields=id,created_time,images{source},picture&limit=5&after=AFTER_TOKEN_HERE");
The API handles putting in the forward slash between the root and the relative url.
I have created a website, And I don't to allowed customer to type link in browser.
I just want to allow customer click link on the website only.
please provide me a solution !!!
thank for help !!!
use token for in hyperlinks . deny if token wont match to value in session.
try the following:
in controller check if session['token'] is set,
if not set session['token'] to a rendom value.
if token not set or won't match to $_GET['token'] variable redirect to error page.
if token match to get variable (ie. $_GET['token']) then , pass that value to view.
i don't recomend this because doing this might affect the browser cache.
Controller constructor
function __construct()
{
parent::__construct();
$this->load->library('session');
if(!isset($_SESSION['token']))
{
$_SESSION['token'] = rand();
}
if((!$this->input->get('token')) || ($this->input->get('token') != $_SESSION['token']))
{
redirect('error_page');
}
// to pass to vew
$data['token'] = $_SESSION['token'];
$this->load->view('view_page',$data);
}
in view_page.php (view) replace links like this
Gallery link
I am using Unity 5.5.2f1 pro and facebook's SDK v 7.9.4
I have a script which after login (managed in a previous scene) sends an API request to FB asking for friends, name and email and sends that info as a POST to a php website.
code:
[Serializable]
public struct FBData {
public string first_name;
public string email;
public string friends;
public string id;}
public class UserManagement : MonoBehaviour {
string urlSaveUserData="some php website";
public Text testTxt;
FBData parsedData;
// Use this for initialization
void Start () {
//Check if it's the first time the user is opening the app.
if (UserInfo.FIRST_TIME) {
//update text (only used for testing, should be removed in production.)
testTxt.text = "Your user id is: " + UserInfo.ID;
//Perform FB.API call to get User Data.
getUserData ();
//Save in SQL table. (won't get here if line in getUserData() is active)
StartCoroutine ("saveUserData");
} else {
//do something else.
}
note: Since this is meant for iOS I have to test it on a device so I'm using text in the screen to display info (think of it as a badly implemented print statement).
The problem: In my callback function for FB.API I write in the text Gameobject (aka testTxt) the parsed information from the response which is saved in the Custom UserInfo clss. It display's correctly but the code gets stuck there. It doesn't continue to the next function. HOWEVER, if I delete/comment that line and don't display anything in the text field. The codes does continue to the POST function BUT the information from the API call is not passed, i.e my custom class is empty (leading me to believe the callback function is not called at all).
public void getUserData(){
string query = "me?fields=first_name,email,friends";
FB.API (query, HttpMethod.GET, Apicallback, new Dictionary<string, string> ());
}
private void Apicallback(IGraphResult result){
//Parse Graph response into a specific class created for this result.
parsedData = JsonUtility.FromJson<FBData>(result.RawResult);
//Pass each field into UserInfo class.
UserInfo.EMAIL = parsedData.email;
UserInfo.FRIENDS = parsedData.friends;
UserInfo.NAME = parsedData.first_name;
UserInfo.FACEBOOKID = parsedData.id;
/*problem area, if I comment line below, then previous information is apparently not stored. If left as is then testTxt displays correct information but code gets stuck there. */
testTxt.text = "This is the info from USerInfoInside the APICallback: " + UserInfo.EMAIL + UserInfo.FRIENDS + UserInfo.FACEBOOKID;
}
The function below is to send info to php website, is there for illustrative purposes:
code:
public IEnumerator saveUserData() {
//get user info (this information is EMPTY if line in getUserData() is commented.
parsedData.id = UserInfo.FACEBOOKID;
parsedData.friends = UserInfo.FRIENDS;
parsedData.first_name = UserInfo.NAME;
parsedData.email = UserInfo.EMAIL;
//translate data into json
string JsonBodyData = JsonUtility.ToJson (parsedData);
//Custom web request (POST method doesnt seem to work very well, documentation example sends empty form)
var w = new UnityWebRequest(urlSaveUserData, "POST");
byte[] bodyRaw = new System.Text.UTF8Encoding().GetBytes(JsonBodyData);
w.uploadHandler = (UploadHandler) new UploadHandlerRaw(bodyRaw);
w.downloadHandler = (DownloadHandler) new DownloadHandlerBuffer();
w.SetRequestHeader("Content-Type", "application/json");
yield return w.Send();
//work with received data...}
Im stuck here any help is appreciated. Thanks!
Be sure to use EscapeURL when using strings directly for JSON or HTTP POST and GET methods. The lack of this treatment tends to screw things over, particulary in iOS platforms.
From what I can see, this code
string query = "me?fields=first_name,email,friends";
should instead be escaped as
string query = WWW.EscapeURL("me?fields=first_name,email,friends");
so characters like "?" won't get encoded as an URL symbol.
I'm assuming you don't need to do that for your illustrative example, because UnityWebRequest already escapes your POST request strings internally, but I can't fully confirm that.
I am watching a field on a page with a change.
watch("#searchbox","change");
How do you get the new value of the field in the rule that fires after it changes?
I have a rule like this
rule get_update is active {
select when web change "#searchbox"
....
}
I cannot find out how to get the new value. I cannot use watch it with a submit.
Thanks
I am going to guess what I think you are trying to do:
You have an input on a page and when a user types in the input, you want to be able to raise an event and get the new value from the input that the user was typing into so you can react to what ever it is that they typed in.
Based on the assumptions I have made:
The watch action is not what you really want to use because it only raises an event on the action that it is watching and doesn't send any other data along with the event. You will want to write some of your own custom JavaScript to
watch for the user typing
get the new value from the input
raise web event with the new value as a parameter
Here is some sample code taken from http://kynetxappaday.wordpress.com/2010/12/16/day-8-raise-web-events-from-javascript/ that illustrates raising a web event with a parameter in JavaScript
ruleset a60x488 {
meta {
name "raising-custom-web-events"
description <<
raising-custom-web-events
>>
author "Mike Grace"
logging on
}
rule run_on_a_pageview {
select when pageview ".*"
{
notify("Hello","I ran on a pageview") with sticky = true;
emit <|
app = KOBJ.get_application("a60x488");
app.raise_event("custom_event_just_for_me", {"answer":42});
|>;
}
}
rule respond_to_custom_event_raised_from_emitted_js {
select when web custom_event_just_for_me
pre {
answer = event:param("answer");
}
{
notify("What is the answer?",answer) with sticky = true;
}
}
}
I have an asyncfileupload control that I'm using from the ajaxcontroltoolkit. On the file complete in the code behind I process the file and write the information in the file to a database. I get the id of the record from the database, and this needs to be written to an asp hidden field. I've tried just setting the value:
fldImageID.Value = pimg.IdImageGroup.ToString();
I've tried Registering a script like I've seen in an example on a website:
ScriptManager.RegisterClientScriptBlock(
ImageFileUploader,
ImageFileUploader.GetType(),
"script1",
"alert('hi'); top.document.getElementById('"
+ fldImageID.ClientID
+ "').value='"
+ pimg.IdImageGroup.ToString()
+ "'; top.document.getElementById('"
+ lblError.ClientID
+ "').innerHTML = 'image uploaded'",
true);
I've just tried embedding javascript in a response.Write call from the method I've set to process the uploaded file. Nothing I've done has worked so far. After I've done everything the hidden field still does not contain the required value.
This is pretty easy with jQuery. Have an html hidden input control placed in your page, not the asp:hidden input control. Add a class lets say "hiddenPhoto" to your html hidden control.
so lets say our control html is like this
<input type="hidden" class="hiddenPhoto" runat="server" id="hdPhotoName" />
Now access it using class selector in your OnClientUploadComplete js method and set its value. Have it declared runat="server" in order to access its value on the server side.
Regards
I found an acceptable solution back when I was working on this. And since then I've received emails from people who have had the same problem and have been asking if I found a solution. So I'm presenting it here, stripping out any extraineous code:
From the user control that has the FileUpload control I first set the session variable on the back side in the FileUploadComplete handler:
*in the ascx file (upload_chart.ascx) I have the AsyncFileUpload, what is important is the OnUploadComplete and the OnClientUploadComplete:*
<ajaxToolkit:AsyncFileUpload
OnUploadedComplete="FileUploadComplete1"
OnClientUploadComplete="UploadComplete1"
ID="ImageFileUploader"
runat="server" />
*in the code behind of the ascx file (upload_chart.ascx.cs) I handle the FileUploadComplete:*
public void FileUploadComplete1(object sender, EventArgs e)
{
try
{
if (ImageFileUploader.FileBytes.Length > 0)
{
// File data is in ImageFileUploaded.FileBytes
// Save it however you need to
// I saved it to a database, in a DBImage Object class I created
// DBImage is specific to my application
ODS.Entity.DBImage pimg =
ODS.Data.DataRepository.SaveImageBytes(ImageFileUploaded.FileBytes);
// Set the ImageID1 in the session
Session["ImageID1"] = pimg.IdImageGroup.ToString();
}
else
{
// error handling for an empty file, however you want to handle it
}
}
catch (Exception Ex)
{
// error handling for an unhandled exception, whatever you want to do here
}
}
Javascript and script methods are used to set the value on the page, here is my codebehind for the script method:
// on the aspx page code behind (chartofthedayadmin.aspx.cs) I have the webmethod:
[System.Web.Services.WebMethod]
public static string GetImageID1()
{
System.Web.SessionState.HttpSessionState Session = System.Web.HttpContext.Current.Session;
String retval = Session["ImageID1"].ToString();
Session["ImageID1"] = null;
return retval;
}
Here is the javascript:
// on the aspx front end (chartofthedayadmin.aspx) I have the javascript
// to call the Web method and the javascript failed message:
function UploadComplete1() {
var str = PageMethods.GetImageID1(uploadSuccess1, uploadFailed);
}
function uploadFailed() {
alert('error occurred or some meaningfull error stuff');
}
*// javascript on the user control (upload_chart.ascx) to set the value of the hidden field*
function uploadSuccess1(result) {
document.getElementById('<%= fldImageID.ClientID %>').value = result;
}
note: Make sure your scriptmanager has EnablePageMethods="true".
The better and more simple solution is in code behind:
string script = String.Format("top.document.getElementById('hdnFilename').value='{0}';", safeFilename);
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "hdnFilenameFromCodeBehind", script, true);
In my case, safeFilename is the unique filename, after handling duplicate filename, i.e. sample_5.png in the 5th upload of sample.png.
See http://forums.asp.net/t/1503989.aspx