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  • Paperclip and xhr.sendAsBinary

    - by Denis
    Hi, I use paperclip to add a file to my model. I want to use the new feature of firefox 3.6, xhr.sendAsBinary, to send a file with an ajax request. Here is how I build my request : var xhr = new XMLHttpRequest(); xhr.open("POST", "/photos?authenticity_token=" + token + "&photo[name]=" + img.name + "&photo[size]=" + img.size); xhr.overrideMimeType('text/plain; charset=x-user-defined-binary'); xhr.sendAsBinary(bin); name and size are saved in my model without problem but the file itself is not catched by paperclip. my model class Photo < ActiveRecord::Base has_attached_file :photo, :styles => { :medium => "300x300>", :thumb => "100x100>" } end the migration def self.up add_column :photos, :photo_file_name, :string add_column :photos, :photo_content_type, :string add_column :photos, :photo_file_size, :integer add_column :photos, :photo_updated_at, :datetime end and my controller # POST /photos # POST /photos.xml def create @photo = Photo.new(params[:photo]) respond_to do |format| if @photo.save format.html { redirect_to(@photo, :notice => 'Photo was successfully created.') } format.xml { render :xml => @photo, :status => :created, :location => @photo } else format.html { render :action => "new" } format.xml { render :xml => @photo.errors, :status => :unprocessable_entity } end end end Any idea how to solve this issue? Thanks

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  • How to catch an expected (and intended) 302 response code with generic XmlHttpRequest?

    - by Anthony
    So, if you look back at my previous question about Exchange Autodiscover, you'll see that the easiet way to get the autodiscover URL is to send a non-secure, non-authenticated GET request to the server, ala: http://autodiscover.exchangeserver.org/autodiscover/autodiscover.xml The server will respond with a 302 redirect with the correct url in the Location header. I'm trying out something really simple at first with a Chrome extension, where I have: if (req.readyState==4 && req.status==302) { return req.getResponseHeader("Location"); } With another ajax call set up with the full XML Post and the user credentials, But instead Chrome hangs at this point, and a look at the developer panel shows that it is not returning back the response but instead is acting like no response was given, meanwhile showing a Uncaught Error: NETWORK_ERR: XMLHttpRequest Exception 101 in the error log. The way I see it, refering to the exact response status is about the same as "catching" it, but I'm not sure if the problem is with Chrome/WebKit or if this is how XHR requests always handle redirects. I'm not sure how to catch this so that I can get still get the headers from the response. Or would it be possible to set up a secondary XHR such that when it gets the 302, it sends a totally different request? Quick Update I just changed it so that it doesn't check the response code: if (req.readyState==4) { return req.getResponseHeader("Location"); } and instead when I alert out the value it's null. and there is still the same error and no response in the dev console. SO it seems like it either doesn't track 302 responses as responses, or something happens after that wipes that response out?

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  • stoping doGet/dopost in java servlets ?

    - by bosso
    Hello everyone, I've been playing with Java Servlets and Ajax a bit, and I've got a situation on which I would really appreciate advice. Let's say I have HTML page with a start and stop buttons, and as a result of clicking start button, overridden doGet (or doPost) method on a servlet is invoked which computes something that takes a long time to complete. (e.g. a giant loop, or even Infinite loop, doesn't matter, I'm interested in concepts here). So, I'm asking you: 1.What would be my options to kill / shut down / halt / exit doGet method whan I hit stop button on a web page? Do I use threading here, or there is simpler way? I take it that using System exit is not a very good idea, right? ;) 2.So, let's say I implement code for stopping doGet method. What would happen If I hit start on one browser(e.g.IE), and while this long computation takes place open new tab or other browser(e.g.Firefox) and open same url and hit stop? Would that stop my original computation? Is there any easy way to avoid this? I know that questions are a bit off, as I'm just starting with server-side of things. :) Any suggestions would be greatly appreciated!

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  • Seperating Javascript and Html, when dynamically adding html via javascript

    - by optician
    I am currently building a very dynamic table for a list application, which will basically perform basic CRUD functions via AJAX. What I would like to do is separate the visual design and javascript to the point where I can change the design side without touching the JS side. This would only work where the design stays roughly the same(i would like to use it for rapid protyping) Here is an example. <table> <tr><td>record-123</td><td>I am line 123</td><td>delete row</td></tr> <tr><td>record-124</td><td>I am line 124</td><td>delete row</td></tr> <tr><td>record-125</td><td>I am line 125</td><td>delete row</td></tr> <tr><td>add new record</td></tr> </table> Now, when I add a new record, I would like to insert a new row of html, but I would rather not put this html into the javascript file. What I am considering is creating a row like this on the page, near the table. <tr style='visble:none;' id='template-row'><td>record-id</td><td>content-area</td><td>delete row</td></tr> And when I come to add the new row, I search the page for the tags with the id=template-row , and then grab it, do a string replace on it, and then put it in the right place in the page. As long as the design doesn't shift radically, and I keep the placeholder strings the same, it means designs can be quickly modified without touching the js. Can any give any advice on a methodology like this?

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  • General Web Programming/designing Question: ?

    - by Prasad
    hi, I have been in web programming for 2 years (Self taught - a biology researcher by profession). I designed a small wiki with needed functionalities and a scientific RTE - ofcourse lot is expected. I used mootools framework and AJAX extensively. I was always curious when ever I saw the query strings passed from URL. Long encrypted query string directly getting passed to the server. Especially Google's design is such. I think this is the start of providing a Web Service to a client - I guess. Now, my question is : is this a special, highly professional, efficient / advanced web design technique to communicate queries via the URL ? I always felt that direct URL based communication is faster. I tried my bit and could send a query through the URL directly. here is the link: http://sgwiki.sdsc.edu/getSGMPage.php?8 By this , the client can directly link to the desired page instead of searching and / or can automate. There are many possibilities. The next request: Can I be pointed to such technique of web programming? oops: I am sorry, If I have not been able to convey my request clearly. Prasad.

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  • Update CGridView when a dropdown value changes

    - by Gautam Borad
    I have a CGridView with columns from a table "product" => {'product_id','category_id',...} I have another table "category" => {'category_id','category_name'} category_id is the FK in the product table. Now i want a dropdown list of the category table and on selecting a particular value the CGridView of product should be updated to show only the rows with that category_id. I also need the column filtering/sorting for the CGridView to work (using AJAX). I was able to refresh the CGridView when a value is selected from the dropdown, however i am not able to send the category_id with the 'data' for the CGridView: clientScript-registerScript('search', " $('.cat_dropdown').change(function(){ $.fn.yiiGridView.update('order-grid', { data: $(this).serialize(), }); return false; }); "); The data: $(this).serialize() sends only the values that are present in the filtering text fields of the CGridView. How do i append the category_id with it? If the above method is not the right one, please suggest an alternative method.

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  • Separating Javascript and Html, when dynamically adding html via javascript

    - by optician
    I am currently building a very dynamic table for a list application, which will basically perform basic CRUD functions via AJAX. What I would like to do is separate the visual design and javascript to the point where I can change the design side without touching the JS side. This would only work where the design stays roughly the same(i would like to use it for rapid protyping) Here is an example. <table> <tr><td>record-123</td><td>I am line 123</td><td>delete row</td></tr> <tr><td>record-124</td><td>I am line 124</td><td>delete row</td></tr> <tr><td>record-125</td><td>I am line 125</td><td>delete row</td></tr> <tr><td>add new record</td></tr> </table> Now, when I add a new record, I would like to insert a new row of html, but I would rather not put this html into the javascript file. What I am considering is creating a row like this on the page, near the table. <tr style='visble:none;' id='template-row'><td>record-id</td><td>content-area</td><td>delete row</td></tr> And when I come to add the new row, I search the page for the tags with the id=template-row , and then grab it, do a string replace on it, and then put it in the right place in the page. As long as the design doesn't shift radically, and I keep the placeholder strings the same, it means designs can be quickly modified without touching the js. Can any give any advice on a methodology like this?

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  • Jquery and XML - How to add the value of nodes

    - by Matias
    Hi Experts, This may be a simple question though can´t figure out how to do it. I am parsing an XML with Jquery Ajax. It contains dates and rates The XML looks something like <rate> <date>Today</date> <price>66</price> </rate> <rate> <date>Tomorrow</date> <price>99</price> </rate> I simply want to figure out how to calculate the total price of both days Today and Tomorrow. Thought that by using Javascript Number it will simply return the total value of the nodes.. $(xml).find("rate").each(function() { $(this).find("price").each(function() { $("#TOTALPRICE").append(Number($(this).text())); } } //output is: 6699 However, it´s just concatenating the values both not adding them. //output is: 6699 I greatly appreciate your help !! Thanks

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  • Forms authentication, ASP.NET MVC and WCF RESTful service

    - by J F
    One test webserver, with the following applications service.ganymedes.com:8008 - WCF RESTful service, basically the FormsAuth sample from WCF Starter Kit Preview 2 mvc.ganymedes.com:8008 - ASP.NET MVC 2.0 application web.config for service.ganymedes.com: <authentication mode="Forms"> <forms loginUrl="~/login.aspx" timeout="2880" domain="ganymedes.com" name="GANYMEDES_COOKIE" path="/" /> </authentication> web.config for mvc.ganymedes.com: <authentication mode="Forms"> <forms loginUrl="~/Account/LogOn" timeout="2880" domain="ganymedes.com" name="GANYMEDES_COOKIE" path="/" /> </authentication> Trying my darndest, a GET (or POST for that matter) via jQuery's $.ajax or getJson does not send my cookie (according to Firebug), so I get HTTP 302 returned from the WCF service: Request Headers Host service.ganymedes.com:8008 User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729) Accept application/json, text/javascript, */* Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 300 Connection keep-alive Referer http://mvc.ganymedes.com:8008/Test Origin http://mvc.ganymedes.com:8008 It's sent when mucking about on the MVC site though: Request Headers Host mvc.ganymedes.com:8008 User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729) Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 300 Connection keep-alive Referer http://mvc.ganymedes.com:8008/Test Cookie GANYMEDES_COOKIE=0106A4A666C8C615FBFA9811E9A6C5219C277D625C04E54122D881A601CD0E00C10AF481CB21FAED544FAF4E9B50C59CDE2385644BBF01DDD4F211FE7EE8FAC2; GANYMEDES_COOKIE=D6569887B7C5B67EFE09079DD59A07A98311D7879817C382D79947AE62B5508008C2B2D2112DCFCE5B8D4C61D45A109E61BBA637FD30315C2D8353E8DDFD4309 I also put the exact same settings in both applications' web.config files (self-generated validationKey and decryptionKey).

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  • RJS error: TypeError: element is null

    - by salilgaikwad
    Hi All, I got RJS error: TypeError: element is null while using ajax. I used in view <%= periodically_call_remote(:url={:action='get_user_list', :id='1'}, :frequency = '5') % in controller render :update do |page| page.replace_html 'chat_area', :partial => 'chat_area', :object = [@chats, @user] if @js_update end in partial chat_area <% if [email protected]? && !show_div(@chats).blank?% <% show_div_id=show_div(@chats) % <% for chat in @chats % " style="display:<%= (chat.id == show_div_id)? 'block' : 'none' %;" <% form_remote_for(:chat, :url => {:controller=>'chats', :action='create', :id=1}, :html={:name = "form_#{chat.id}"}, :complete="resetContent('#{chat.id}');") do |f| % <%= f.hidden_field :sessionNo, :value=chat.sessionNo % <%= f.text_area :chatContent, :id= "chatContent_field_#{chat.id}", :cols="100", :rows="6", :onKeyPress="return submitenter(this,event);" % ')"/ <% end % </div> <% end % <% else % <% end % My div present in index.html.erb <table border="0" width="100%" cellspacing="0" cellpadding="0"> <tbody><tr> <td align="left" width="80%" valign="top" style=""> <%= text_area :chat, :chatContent, :id=> "chatContent_field", :cols=>"100", :rows=>"6" %> </td> <td align="left" width="20%" valign="bottom" style="padding-left:10px;padding-left:10px;x" > <div id="chat_area"> <%= render :partial => 'chat_area' %> </div> </td> </tr> </tbody> </table> Any help is appreciated. Regards, Salil Gaikwad

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  • Please help! request compression

    - by Naor
    Hi, I wrote an IHttpModule that compress my respone using gzip (I return a lot of data) in order to reduce response size. It is working great as long as the web service doesn't throws an exception. In case exception is thrown, the exception gzipped but the Content-encoding header is disappear and the client doesn't know to read the exception. How can I solve this? Why the header is missing? I need to get the exception in the client. Here is the module: public class JsonCompressionModule : IHttpModule { public JsonCompressionModule() { } public void Dispose() { } public void Init(HttpApplication app) { app.BeginRequest += new EventHandler(Compress); } private void Compress(object sender, EventArgs e) { HttpApplication app = (HttpApplication)sender; HttpRequest request = app.Request; HttpResponse response = app.Response; try { //Ajax Web Service request is always starts with application/json if (request.ContentType.ToLower(CultureInfo.InvariantCulture).StartsWith("application/json")) { //User may be using an older version of IE which does not support compression, so skip those if (!((request.Browser.IsBrowser("IE")) && (request.Browser.MajorVersion <= 6))) { string acceptEncoding = request.Headers["Accept-Encoding"]; if (!string.IsNullOrEmpty(acceptEncoding)) { acceptEncoding = acceptEncoding.ToLower(CultureInfo.InvariantCulture); if (acceptEncoding.Contains("gzip")) { response.AddHeader("Content-encoding", "gzip"); response.Filter = new GZipStream(response.Filter, CompressionMode.Compress); } else if (acceptEncoding.Contains("deflate")) { response.AddHeader("Content-encoding", "deflate"); response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress); } } } } } catch (Exception ex) { int i = 4; } } } Here is the web service: [WebMethod] public void DoSomething() { throw new Exception("This message get currupted on the client because the client doesn't know it gzipped."); } I appriciate any help. Thanks!

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  • flash player: usage

    - by Syom
    i use Adobe flash player in my site, and now i need to increment some filed in database, when user click on player. here is the script <div id="conteiner" style="text-align: center;" ></div> <script type="text/javascript"> var s1 = new SWFObject("player.swf","ply","420","380","9","#FFFFFF"); s1.addParam("allowfullscreen","true"); s1.addParam("allowscriptaccess","always"); s1.addParam("flashvars","file=<?=$video ?>"); s1.write("conteiner"); </script> i deside to use ajax for it, but how can i write a function in the flash object? thanks in advance UPDATE: i only have the swfobject.js file, which contains such data if(typeof deconcept=="undefined"){var deconcept=new Object();} if(typeof deconcept.util=="undefined"){deconcept.util=new Object();} if(typeof deconcept.SWFObjectUtil=="undefined"){deconcept.SWFObjectUtil=new Object();}deconcept.SWFObject=function(_1,id,w,h,_5,c,_7,_8,_9,_a){if(!document.getElementById){return;}this.DETECT_KEY=_a?_a:"detectflash";this.skipDetect=deconcept.util.getRequestParameter(this.DETECT_KEY);this.params=new Object();this.variables=new Object();this.attributes=new Array();if(_1){this.setAttribute("swf",_1);}if(id){this.setAttribute("id",id);}if(w){this.setAttribute("width",w);}if(h){this.setAttribute("height",h);}if(_5){this.setAttribute("version",new deconcept.PlayerVersion(_5.toString().split(".")));}this.installedVer=deconcept.SWFObjectUtil.getPlayerVersion();if(!window.opera&&document.all&&this.installedVer.major>7) ... and the player.swf, and the html, i've shown allready. i don't now is this flash player or no, and what can i do?

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  • events not firing in VisualForce

    - by Ben
    In the page below,Topic__c is a single-select picklist. My intention is to have this list control which of the input fields is available below. The user selects an option, and the onchange event should fire, and rerender the fields. <apex:inputField value="{!Call_Report__c.Topic__c}" id="topic" > <apex:actionSupport event="onchange" reRender="tickerInput,sectorInput,bondInput"> <apex:param name="topicSelection" value="{!Call_Report__c.Topic__c}" /> </apex:actionSupport> </apex:inputField> <apex:inputField value="{!Call_Report__c.Tickers__c}" rendered="{!Call_Report__c.Topic__c='Issuer'}" id="tickerInput" /> <apex:inputField value="{!Call_Report__c.Sector__c}" rendered="{!Call_Report__c.Topic__c='Industry'}" id="sectorInput"/> <apex:inputField value="{!Call_Report__c.Security__c}" rendered="{!Call_Report__c.Topic__c='Specific Bond'}" id="bondInput" /> Am I doing something obviously wrong here? http://community.salesforce.com/t5/Visualforce-Development/Multi-select-picklist-not-firing-event-for-AJAX-refreshes/m-p/173572/highlight/false#M22119 seems to imply that what I am doing is reasonable...

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  • Using jQuery to grab the content from CKEditor's iframe

    - by miCRoSCoPiC_eaRthLinG
    Hey guys, I have this custom written CMS that uses CKEditor *(FCKEditor v3) for editing content. Along with that I'm using the jQuery Validation plugin to check all fields for error prior to ajax-based submission. For passing on the data to the PHP backend, I'm using the serialize() function. Problem is, serialize manages to grab all other fields correctly, except for the actual content typed in CKEditor. Like every other WYSIWYG editor, this one too overlays an iframe over an existing textbox. And serialize ignores the iframe and looks only into the textbox for content... which of course, it doesn't find - thus returning a blank content body. My approach to this is to create a hook onto the onchange event of CKEditor and concurrently update the textbox (CKEDITOR.instances.[textboxname].getData() returns the content) or some other hidden field with any changes made in the editor. However, since CKEditor is still in it's beta stage and severely lacks documentation, I cannot seem to find a suitable API call that'll enable me to do so. Does anyone have any idea on how to go about this? Or maybe suggest even a better method?

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  • How to show errors using JSON when an update fails in Rails 2.3.5 with jQuery

    - by Fortuity
    I've got in-place editing on a page in my app (using Rails 2.3.5 and jQuery). I want to know how to display an error on the page when the update fails. I'm using ajax (an XMLHttpRequest) to save an update to a Comment object. The controller has an update method like this: def update @comment = Comment.find(params[:id]) respond_to do |format| # if @comment.update_attributes!(params[:comment]) if false #deliberately forcing a fail here to see what happens format.json { render :nothing => true } else format.json { render :json => @comment.errors, :status => :unprocessable_entity } end end end In Firebug, I can see the server returns a "422" (an appropriate validation error status code). But it's a response to an XMLHttpRequest so there is no redirect to an error page. I think I actually want to do this: format.json { render :json => @comment.errors} and trigger some Javascript function that iterates through (and displays) any errors. I'm using a rails plugin http://github.com/janv/rest_in_place/ to implement the in-place editing. It doesn't appear to have any callback function to handle a failure. What are my options? Can I write some Javascript to respond to a failure condition without hacking the plugin? Do I have to hack the rest_in_place plugin to handle a failure condition? Is there a better plugin (for Rails or jQuery) that handles in-place editing, including failure conditions?

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  • asp.net updatepanel inside hidden panel possible bug

    - by MakkyNZ
    Hi The javascript generated by the asp.net SciptManager control seems to have a bug and cant handle hidden UpdatePanels. A javascript error is thrown when a control within one updated panel tries to make another update panel visible. Is this a bug with ASP.Net ajax? And does anyone have any ideas how to get around this? heres is an example of when im trying to to <script type="text/C#" runat="server"> protected void LinkButton1_Click(object sender, EventArgs e) { Panel1.Visible = true; } </script> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click" Text="Show Panel"></asp:LinkButton> </ContentTemplate> </asp:UpdatePanel> <asp:Panel ID="Panel1" runat="server" Visible="false"> <asp:UpdatePanel ID="UpdatePanel2" runat="server"> <ContentTemplate> blah bla blah </ContentTemplate> </asp:UpdatePanel> </asp:Panel> this is the javascript error that gets thrown when clicking on the "LinkButton1" link. This error comes from the javascript that is generated by the asp.net ScriptManager control Error: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'ctl00_ContentPlaceHolder1_UpdatePanel2'

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  • dynamic link_to_remote in rails with jquery

    - by Claus Lensbøl
    Hi I'm trying to pass a string with a link_to_remote call as the :id, and the string should be collected from an input field with and id of "movie_title". <div id="search_list">Nothing here yet</div> <br /> <% semantic_form_for @movie do |f| %> <% f.inputs do -%> <%= f.input :title, :class => "movie_title" %> <%= link_to_remote( 'Search...', { :url => { :action => :imdb_search, :id => "'+$('\#movie_title').value+'" } }, { :title => "Search for this movie", :class => "imdb_search" } ) -%> [...removed text that does not matter...] <% end -%> <%= f.buttons %> <% end %> I keep getting an javascript error, and if I remove the # from the jquery in the link, it returns "Undefined". The link I get is: <a class="imdb_search" href="#" onclick="jQuery.ajax({data:'authenticity_token=' + encodeURIComponent('yHPHYTZsPTQLi9JYSauUYcoie/pqPPk2uHBTN0PzNsQ='), dataType:'script', type:'post', url:'/movies/imdb_search/'+$('%23movie_title').value+''}); return false;" title="Search for this movie">Search...</a> So I want the link updated with the contents of movie_title. How do I do that?

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  • JsonParseException on Valid JSON

    - by user2909602
    I am having an issue calling a RESTful service from my client code. I have written the RESTful service using CXF/Jackson, deployed to localhost, and tested using RESTClient successfully. Below is a snippet of the service code: @POST @Produces("application/json") @Consumes("application/json") @Path("/set/mood") public Response setMood(MoodMeter mm) { this.getMmDAO().insert(mm); return Response.ok().entity(mm).build(); } The model class and dao work successfully and the service itself works fine using RESTClient. However, when I attempt to call this service from Java Script, I get the error below on the server side: Caused by: org.codehaus.jackson.JsonParseException: Unexpected character ('m' (code 109)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') I have copied the client side code below. To make sure it has nothing to do with the JSON data itself, I used a valid JSON string (which works using RESTClient, JSON.parse() method, and JSONLint) in the vars 'json' (string) and 'jsonData' (JSON). Below is the Java Script code: var json = '{"mood_value":8,"mood_comments":"new comments","user_id":5,"point":{"latitude":37.292929,"longitude":38.0323323},"created_dtm":1381546869260}'; var jsonData = JSON.parse(json); $.ajax({ url: 'http://localhost:8080/moodmeter/app/service/set/mood', dataType: 'json', data: jsonData, type: "POST", contentType: "application/json" }); I've seen the JsonParseException a number of times on other threads, but in this case the JSON itself appears to be valid (and tested). Any thoughts are appreciated.

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  • Setting the target and parent dropdown values from a DB when using CascadingDropDown

    - by Ryan
    Hi, I have two dropdown lists with Cascading Dropdown, in the usual fashion: <asp:DropDownList ID="DropDownListIndustry" runat="server" DataSourceID="SqlDataSourceIndustries" DataTextField="name" DataValueField="industry_id" AppendDataBoundItems=" <asp:ListItem Text="(Please Select)" Value="-1" /> </asp:DropDownList> &nbsp;&nbsp; <ajax:CascadingDropDown ID="CascadingDropDownIndustry" runat="server" ParentControlID="DropDownListIndustry" TargetControlID="DropDownListSubIndustry" ServicePath="AjaxDataProvider.asmx" ServiceMethod="GetSubIndustry" Category="SubIndustry" /> <asp:DropDownList ID="DropDownListSubIndustry" runat="server"/> No surprises there. However, I sometimes want to set the values of the parent and target from a DB (I want to default them, based on a code entered by the user; the whole thing is wrapped in an update panel). So if the user keys in ABC, I look up ABC in the DB and default the Parent DropDown to ID 10 and Child DropDown to ID 101. However, this fails because the child has no items when the server side code runs (the web script method hasn't run, because the content of the parent dd wasn't changed on the client side) Does anybody know how to work around this? Thanks for any help! Ryan

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  • What are some funny loading statements to keep users amused?

    - by Oli
    Nobody likes waiting but unfortunately in the Ajax application I'm working on at the moment, there is one fair-sized pause (1-2 seconds a go) that users have to undergo each and every time they want to load up a chunk of data. I've tried to make the load as interactive as possible. There's an animated GIF alongside a very plain, very dull "Loading..." message. So I thought it might be quite fun to come up with a batch of 50-or-so funny-looking messages and pick from them randomly so the user never knows what they're going to see. The time they would have spent growing impatient is fruitfully used. Here's what I've come up with so far, just to give you an idea. var randomLoadingMessage = function() { var lines = new Array( "Locating the required gigapixels to render...", "Spinning up the hamster...", "Shovelling coal into the server...", "Programming the flux capacitor" ); return lines[Math.round(Math.random()*(lines.length-1))]; } (Yes -- I know some of those are pretty lame -- That's why I'm here :) The funniest I see today will get the prestigious "Accepted Answer" award. Others get votes for participation. Enjoy!!

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  • Get data from database without refresh whole page

    - by stefanz
    Hello everybody. My project is about a school admin I have a page called : createClass.php, where user inserts grade, profile etc. When he press "submit" page called createdClass.php is loading. Inside this page I have all code which insert data into database and also an "if" structure which says : "Class already exists" if in database is another class with same specifications. Also in second page (createdClass.php) i have a small table which shows the place of each student. First time all cells are green (this means that place is free) and if i click one of them appear a popup window which let me to add info about student from that place. If a place is busy the cell will be red (take a look here : http://screencast.com/t/NzM2YzYxNjct). The big problem is that the cell will be red only after refresh the page (the place ask for data from database). If I press refresh appears "class already exists". To test the code i added in a comment all lines which verify and add respectively classroom . I think my problem can be solved with ajax. I'm waiting for an answer. Regards Stefan

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  • rich:tabPanel and problems when filed has required="true"

    - by JQueryNeeded
    Hello, Let's consider following, simplified example: we have 2 tabs withing , each tab has and at the moment we want to switch from one tab to another, and the inputText is empty (we dont want to submit value from it anyway, we want to go to another tab) we get "Validation Error: Value is required." the example code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:a4j="http://richfaces.org/a4j" xmlns:rich="http://richfaces.org/rich" > <a4j:form id="mainForm" reRender="mainForm" ajaxSubmit="true" > <rich:tabPanel switchType="ajax"> <rich:tab label="TabA" > <a4j:region> <h:outputText value="Tab A content" /> <h:inputText value="" required="true" /> </a4j:region> </rich:tab> <rich:tab label="TabB"> <a4j:region> <h:outputText value="Tab B content" /> <h:inputText value="" required="true" /> </a4j:region> </rich:tab> </rich:tabPanel> <rich:messages /> </a4j:form> </html>

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  • Best practice when using WebMethods and session

    - by Abdel Olakara
    Hi all, I want to reduce postback in one of my application page and use ajax instead. I used the WebMethod to do so.. I have a static WebMethod that needs to access the session variables and modify. and on the client side, i am calling this method using jQuery. I tried accessing the session as follows: [WebMethod] public static void TestWebMethod() { if (HttpContext.Current.Session["pitems"] != null) { log.Debug("Using the existing list"); Product prod = (Product)HttpContext.Current.Session["pitems"]; List<Configs> confs = cart.GetConfigs(); foreach (Configs citem in confis) { log.Info(citem.Description); } } log.Info("Inside the method!"); } The values are displayed correctly and seems to work.. but i would like to know if this practice is allowed as the method is a static methods and would like to know how it will behave if multiple people access the application. I would also like to know how developers do these kind of tasks in ASP if this is not the right method. Thanks in advance for your suggestions and ideas, Abdel Olakara

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  • What is the right way to make a new XMLHttpRequest from an RJS response in Ruby on Rails?

    - by Yuri Baranov
    I'm trying to come closer to a solution for the problem of my previous question. The scheme I would like to try is following: User requests an action from RoR controller. Action makes some database queries, makes some calculations, sets some session variable(s) and returns some RJS code as the response. This code could either update a progress bar and make another ajax request. display the final result (e.g. a chart grahic) if all the processing is finished The browser evaluates the javascript representation of the RJS. It may make another (recursive? Is recursion allowed at all?) request, or just display the result for the user. So, my question this time is: how can I embed a XMLHttpRequest call into rjs code properly? Some things I'd like to know are: Should I create a new thread to avoid stack overflow. What rails helpers (if any) should I use? Have anybody ever done something similar before on Rails or with other frameworks? Is my idea sane?

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  • AjaxStart issue

    - by Jerry
    Hi All I am trying to build a shopping website with ajax. When a user clicks the "add to cart" image. The little loading image will show next to the Add To Cart Image. The first click works fine and the image showed as I expected. However, the second and the following clicks appends more images on the first loading image(2nd:add two loading images, 3rd: add three images..6 total images after 3 clicks). I did use ajaxStop and remove the first image...Not sure what's going on...Could use a help. Thanks a lot. My javascript code // add to cart $(".addToCart").click(function(e){ $this=$(this); $tableId=$this.closest('table').attr('id'); $($this).prev().ajaxStart(function(){ $("<img class='loader' src='images/loader.gif'>").insertBefore($this); }); $($this).prev().ajaxStop(function(){ $($this).prev().remove(); }); HTML <table> <tr> <td width="146" align="right" valign="middle"> <br> <span id="wasPrice"><?php echo $productPriceWas; ?></span> <br> <?php echo "$".$productPrice;?><br>**//I want my image here**<a class="addToCart" href="javascript:void(0);"><img src="images/addToCart.gif" alt="add To Cart"/><a/> </td> </tr> </table>

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