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  • Creating objects and referencing before saving object to db

    - by Flexo
    Sorry about the vague title, but i didnt know how to ask the question in one line :) I have an order with nested itemgroups that again have nested items. the user specify the amount of item that he would like to have in each itemgroup. I would like to create these items in the create method of the orders controller when the order itself is being created. I kinda have 2 problems here. First, how do i set the reference of the items, or better yet, put the items into the @order object so they are saved when the @order is saved? the items are being stored in the db as the code is now, but the reference is not set because the order is not stored in the db yet so it doesnt have an id yet. Second, im not sure im using the correct way to get the id from my itemgroup. @order = Order.new(params[:order]) @order.itemgroups.each do |f| f.amount.times do @item = Item.new() @item.itemgroup_id = f.id @item.save end end

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  • how to use data caching with sqldatabase and asp& c#.net

    - by subash
    i have a large database which is updated every now and then. The application has been developed in asp.net and c#.net. i need to fetch data from the datbase to griview on a button click event . i am planning to use data caching , so that i can improve the performance of the application how can i use DATA caching mechanism so that i could see the updated result of the database in a gridview.

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  • Copying a database into a new database including structure and data

    - by Jason
    In phpMyAdmin under operations I can "Copy database to:" and select Structure and data CREATE DATABASE before copying Add AUTO_INCREMENT value I need to be able to do that without using phpMyAdmin. I know how to create the database and user. I have a source database that's a shell that I can work from so all I really need is the how to copy all the table structure and data part. (I know, the harder part) system() & exec() are not options for me which rules out mysqldump. (I think) How can I loop through each table and recreate it's structure and data? Is it just looping through the results of SHOW TABLES then for each table looping through DESCRIBE tablename Then, is there an easy way for getting the data copied?

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  • Assigning data to an <li> element?

    - by user246114
    Hi, I am generating some list items as a result of a search, and I want to attach some data to each list element from the search (possibly a bad idea to merge ui and data), but now curious about it. I am doing this: var element = $("<li>Hello</li>); element.mydata = "foo"; element.appendTo("#panelParent"); so I'm just assigning my stuff to element.mydata. My click handler reports that no such data exists for the element when clicked: $('#panelParent').delegate('li', 'click', function() { // this.mydata is undefined. }); where did it go to? I could keep the data external to the a list item element, was wondering if there's a convenient way like this to just keep it bound though? Thanks

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  • Need to constantly monitor serial data in Python

    - by jakke34
    Right now I am using an arduino to send data from an analog sensor to COM4. I am trying to make a python script that continuously monitors that data and looks for a certain parameter. I tried something like this but it isn't outputing the data like I want. import serial port = "COM4" ser = serial.Serial(port,9600, timeout =1) value = 0 while 1: value = ser.read() print value

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  • Rails: Serializing objects in a database?

    - by keruilin
    I'm looking for some general guidance on serializing objects in a database. What are serialized objects? What are some best-practice scenarios for serializing objects in a DB? What attributes do you use when creating the column in the DB so you can use a serialized object? How to save a serialized object? And how to access the serialized object and its attributes? (Using hashes?)

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  • Perl help dereferencing a reference to an array of hash references, containing record set data

    - by user1724150
    I'm using the a Amazon Perl module that returns a reference to an array of hash references as $record_sets, containing record set data and I'm having a hard time dereferencing it. I can print the data using data dumper but I need to be able to manipulate the data. Below is the documentation provided for the module Thanks In Advance: #list_resource_record_sets #Lists resource record sets for a hosted zone. #Called in scalar context: $record_sets = $r53->list_resource_record_sets(zone_id => '123ZONEID'); #Returns: A reference to an array of hash references, containing record set data. Example: $record_sets = [ { name => 'example.com.', type => 'MX' ttl => 86400, records => [ '10 mail.example.com' ] }, { name => 'example.com.', type => 'NS', ttl => 172800, records => [ 'ns-001.awsdns-01.net.', 'ns-002.awsdns-02.net.', 'ns-003.awsdns-03.net.', 'ns-004.awsdns-04.net.' ]

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  • Need help with transferring data between MySQL db's using PHP

    - by JM4
    In one of the sites I manage, the client has decided to take on ACH/Bank Account administration where it was previously outsourced. As a result, the information submitted in our online form which used to simply store in a single database for processing now must sit in 'limbo' until the funds used for payment have been verified. My original plan is as follows: At the end of an enrollment, all form data is collected and stored in a single MySQL database. Our internal administrator will receive an email notification reminding him enrollments have taken place. He will process the ACH information collected and wait the 3-4 business days needed for payment to clear. Once the payment information has been returned as Good (haven't considered what I will do with the 'bad' yet), the administrator can log into a secure portal which allows him to click a button to 'process' the full information once compared and verified. the process is simplified as: Enrollment complete: data stored in DB 'A' Funds verified and link clicked: data from 'A' is copied to DB 'B' and 'A' is deleted. I have run similar processes with CSV output before and simply used //transfers old data to archive $transfer = mysql_query('INSERT INTO '.$archive.' SELECT * FROM '.$table) or die(mysql_error()); //empties existing table $query = mysql_query('TRUNCATE TABLE '.$table) or die(mysql_error()); but in those cases, ALL data returned was copied and deleted. I only want to copy and delete a single record. Any idea how to accomplish this?

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  • move data in bulk from oracle to SQL database

    - by Soja
    Hi All... Would like to know which is the best way to move data in bulk from oracle to SQL database programmatically in VB.NET application.This application is suppose to run continuously and moves data from Oracle to SQL whenever data comes. I have found OPENDATASOURCE but does not know the exact syntax. Can someone help me out. Thanks in advance,

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  • How to store data which contains quotes in MySQL

    - by Nitz
    In one of my forms I use the rich text editor from Yahoo!. Now i want to store the data from that textarea in a MySQL database. The user can enter anything in that textarea, e.g. many double or single quotes. How can I store that data? Normally we store by adding that data in one variable and then put that in sql, but the quotes cause problems.

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  • mvc - how to avoid log out when refresh a page

    - by user235973457
    I have built the MVC application with WCF service. The major problem I have experienced with refreshing page. I have created a login page with session (username and password). But when you refresh the home page by pressing F5, it would automatically log out. That is my problem. I need to stay the home page after refresh. I have been googling around to find a solution but it seems not helpful. Any idea? Your advise or code example much appreciated.

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  • Can't send data via xmlhttp

    - by darkandcold
    Hello, I could use xmlhttp and asptear or any other components to post data to external sites on WINDOWS 2003(iis 6). not i am using 2008 server(iis 7) and i can't get worked that components to send data. could you please guide me ? (PS. components are tearing the pages but don't send post data, seems like tear as GET method)

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  • How can I create a sample SQLLite DB for my iPhone app?

    - by Dr Dork
    I'm diving in to iPhone development and I'm building an iPhone app that uses the Core Data framework and my first task will be to get the model setup with a few that will display it. Thus far, I have the model defined and my Managed Object Files created, but I don't have a database with any sample data. What's a quick way to create a DB that conforms to my schema? Are there any tools that can generate a sample DB using my schemas? Is there a good tool I can use to directly manipulate the data in DB for testing purposes? Thanks in advance for your help! I'm going to continue researching this question right now.

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  • Referencing ASP.net textbox data in JavaScripts

    - by GoldenEarring
    I'm interested in making an interactive 3D pie chart using JavaScript and ASP.net controls for a webpage. Essentially, I want to make an interactive version of the chart here: https://google-developers.appspot.com/chart/interactive/docs/gallery/piechart#3D I want to have 5 ASP.net textboxes where the user enters data and then submits it, and the chart adjusts according to what the user enters. I understand using ASP.net controls with JS is probably not the most effective way to go about it, but I would really appreciate if someone could share how doing this would be possible. I really don't know where to begin. Thanks for any help! <%@ Page Language="C#" %> <!DOCTYPE html> <script runat="server"> void btn1_Click(object sender, EventArgs e) { double s = 0.0; double b = 0; double g = 0.0f; double c = 0.0f; double h = 0.0f; s = double.Parse(txtWork.Text); b = double.Parse(txtEat.Text); g = double.Parse(txtCommute.Text); c = double.Parse(txtWatchTV.Text); h = double.Parse(txtSleep.Text); double total = s + b + g + c + h; if (total != 24) { lblError.Text = "Warning! A day has 24 hours"; } if (total == 24) { lblError.Text = string.Empty; } } </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <script type="text/javascript" src="https://www.google.com/jsapi"></script> <script type="text/javascript"> google.load("visualization", "1", { packages: ["corechart"] }); google.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.arrayToDataTable([ ['Task', 'Hours per Day'], ['Work', 11], ['Eat', 2], ['Commute', 2], ['Watch TV', 2], ['Sleep', 7] ]); var options = { title: 'My Daily Activities', is3D: true, }; var chart = new google.visualization.PieChart(document.getElementById('piechart_3d')); chart.draw(data, options); } var data = new google.visualization.DataTable(); var txtWork = document.getElementById('<%=txtWork.ClientID%>') txtEat = document.getElementById('<%=txtEat.ClientID%>') txtCommute = document.getElementById('<%=txtCommute.ClientID%>') txtWatchTV = document.getElementById('<%=txtWatchTV.ClientID%>') txtSleep = document.getElementById('<%=txtSleep.ClientID%>'); var workvalue = parseInt(txtWork, 10) var eatvalue = parseInt(txtEat, 10) var commutevalue = parseInt(txtCommute, 10) var watchtvvalue = parseInt(txtWatchTV, 10) var sleepvalue = parseInt(txtSleep, 10) // Declare columns data.addColumn('string', 'Task'); data.addColumn('Number', 'Hours per day'); // Add data. data.addRows([ ['Work', workvalue], ['Eat', eatvalue], ['Commute', commutevalue], ['Watch TV', watchtvvalue], ['Sleep', sleepvalue], ]); </script> </head> <body> <form id="form1" runat="server"> <div id="piechart_3d" style="width: 900px; height: 500px;"> </div> <asp:Label ID="lblError" runat="server" Font-Size="X-Large" Font-Bold="true" /> <table> <tr> <td>Work:</td> <td><asp:TextBox ID="txtWork" Text="11" runat="server" /></td> </tr> <tr> <td>Eat:</td> <td><asp:TextBox ID="txtEat" text="2" runat="server" /></td> </tr> <tr> <td>Commute:</td> <td><asp:TextBox ID="txtCommute" Text="2" runat="server" /></td> </tr> <tr> <td>Watch TV:</td> <td><asp:TextBox ID="txtWatchTV" Text="2" runat="server" /></td> </tr> <tr> <td>Sleep:</td> <td><asp:TextBox ID="txtSleep" Text="7" runat="server" /></td> </tr> </table> <br /> <br /> <asp:Button ID="btn1" text="Draw 3D PieChart" runat="server" OnClick="btn1_Click" /> </form> </body> </html>

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  • executorservice to read data from database in chuncks and run process on them

    - by TazMan
    I'm trying to write a process that would read data from a database and upload it onto a cloud datastore. How can I decide the partition strategy of the data? I want to query the table in chunks and process each chunk in 10 threads. Each thread basically will send the data to an individual node on a 10 node cluster on the cloud.. Where in the below multi threading code will the dataquery to extract and send 10 concurrent requests for uploading data to cloud would be? public class Caller { public static void main(String[] args) { ExecutorService executor = Executors.newFixedThreadPool(10); for (int i = 0; i < 10; i++) { Runnable worker = new DomainCDCProcessor(i); executor.execute(worker); } executor.shutdown(); while (!executor.isTerminated()) { } System.out.println("Finished all threads"); } }

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  • how do you convert data frame to a custom json format

    - by user1471980
    I need to convert a data frame to json fomrat in R. My data frame y is this: dput(y) structure(list(Name = structure(c(38L, 23L, 16L, 35L, 21L, 6L, 34L, 15L, 46L, 1L, 43L, 28L, 39L, 27L, 7L, 20L, 14L, 44L, 48L, 36L), .Label = c("server09", "server10", "server11", "server12", "server13", "server14", "server15", "server16", "server17", "server18", "server19", "server20", "server21", "server22", "server23", "server24", "server25", "server26", "server27", "server28", "server29", "server30", "server31", "server32", "server33", "server34", "server35", "server36", "server37", "server38", "server39", "server40", "server41", "server42", "server43", "server44", "server45", "server46", "server47", "server48", "server49", "server50", "server51", "server52", "server53", "server54", "server55", "server56", "server57", "server58"), class = "factor"), Date = c(1372737600, 1372737602, 1372737609, 1372737617, 1372737618, 1372737618, 1372737643, 1372737646, 1372737648, 1372737652, 1372737654, 1372737660, 1372737665, 1372737671, 1372737699, 1372737701, 1372737718, 1372737721, 1372737728, 1372737731), Cpu = c(3.9025, 36.3042, 2.6075, 3.1338, 0.9474, 0.149, 5.4401, 2.5652, 0.3612, 3.2651, 1.8703, 13.8967, 4.2438, 5.4401, 2.468, 0.9147, 1.4637, 7.2528, 6.119, 7.7009)), .Names = c("Name", "Date", "Cpu"), row.names = c(1L, 42L, 83L, 84L, 125L, 126L, 127L, 168L, 169L, 202L, 203L, 236L, 277L, 318L, 359L, 360L, 361L, 362L, 395L, 396L), class = "data.frame") I need my json file to look like this: [{ "name":'server13', "data": [ [1372737600,3.9025], [1372737602,10], [1372737609,10] ... [1372737731,20] ] }, { "name":'server14', "data": [ [1372737600,4], [1372737602,10], [1372737609,10] ... [1372737731,30] ] }] I used rjson package as the following: p <- toJSON(as.list(y)) I get this output: "{\"Name\":[\"server13\",\"servar14\",...],\"Date\":[1372737600,1372737602,..],\"Cpu\":[3.9025,36.3042,..]}" Is there an easy way to do this in R?

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  • How to use different providers for Linq to entities?

    - by Anders Svensson
    I'm trying to familiarize myself a bit more with database programming, and I'm looking at different ways of creating a data access layer for applications. I've tried out a few ways but there is such a jungle of different database technologies that I don't know what to learn. For instance I've tried using datasets with tableadapters. Using that I am able to switch data provider rather easily (by programming against the interfaces such as IDbConnection). This is one thing I would want to achieve. But I also know everyone's talking about LINQ, and I'm trying to get to know that a bit better too. So I have tried using Linq to Sql classes as the data access layer as well, but apparently this is not provider independent (works only for SQL Server). So then I read about the Entity Framework (which just as Linq to SQL apparently has gotten its share of bashing already...). It's supposed to be provider independent everybody says, but how? I tried out a tutorial to create an entity data model, but the only providers to choose from were SQL Server/Express. Just for learning purposes, I would like to know how to use the entity framework with MS Access/OleDb. Also, I would appreciate some input on what is the preferred database technology for data access. Is it LINQ still after all the bashing, or should you just use datasets because they are provider independent? Any pointers for what to learn would be great, because it's just too much to learn it all if I'm not going to use it in the end...!

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  • dynamic meta data and description for pages

    - by pradeep
    Hi, I am developing pages in php dynamically i.e data gets filled up from mysql DB. how do i assign a proper meta data and description for these dynamic pages so that google recognises it properly. What needs to be passed in page so that google takes description properly. when i search a page in google. it takes the data in page as description not description tag contents

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  • is it possible to store server returned json data in jqgrid to display columnnames models data dynamically for every request?

    - by user1768246
    is it possible to store server returned json data in jqgrid to display columnnames models data dynamically for every request ? $("#grid").jqGrid({ type: "GET", url: "", var columnNames = $("#grid")[0].p.colNames, var columnModel = $("#grid")[0].p.colNames, var columnData = $("#grid")[0].p.colNames, datatype: 'jsonstring', datastr: columnData, colModel: columnModel, jsonReader: { root: 'innerWrapper.rows', page: "result.gridData.outerWrapper.page", total: "result.gridData.outerWrapper.total", records: "result.gridData.outerWrapper.total", repeatitems: false, }, gridview: true, pager: "pager", height: "auto", rowNum: 10, width:"auto", height:"auto", rowList: [10, 20, 30,40], viewrecords: true, caption:"Graph Data", rownumbers: true, });

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