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  • What SQL query should I perform to get the result set expected?

    - by texai
    What SQL query should I perform to get the result set expected, giving the first element of the chain (2) as input data, or any of them ? table name: changes +----+---------------+---------------+ | id | new_record_id | old_record_id | +----+---------------+---------------+ | 1| 4| 2| | -- non relevant data -- | | 6| 7| 4| | -- non relevant data -- | | 11| 13| 7| | 12| 14| 13| | -- non relevant data -- | | 31| 20| 14| +----+---------------+---------------+ Result set expected: +--+ | 2| | 4| | 7| |13| |14| |20| +--+ I know I should consider change my data model, but: What if I couldn't? Thank you in advance!

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  • Logging in MVC (Zend Framework)

    - by superdario
    Is there a best-practice when it comes to where to put the logging functionality in an MVC application, for example a Zend Framework application (Zend_Log)? Should I put the logging in the controller or in the model? Or in both? If in both, should they have the same logger or a separate one?

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  • Fastest way to copy a set (100+) of related SQLAlchemy objects and change attribute on each one

    - by rebus
    I am developing an app that keeps track of items going in and out of factory. For example, lets say you have 3 kinds of plastic coming in, they are mixed in various ratios and then sent out as a new product. So to keep track of this I've created following database structure: This is very simplified overview of my SQLAlchemy models: IN <- RATIO <- OUT <- REPORT ITEMS -> REPORT IN are products coming in, RATIO is various information on measurements, and OUT is a final product. REPORT is basically a header model which has a lot of REPORT ITEMS attached to it, which in turn relate it to OUT products. This would all work perfectly, but IN and RATION values can change. These changes ultimately change the OUT product which would mean the REPORT values would change. So in order to change an attribute on IN object for example I should copy that object with that attribute changed. I would think this is basically a question about database normalization, because i didn't want to duplicate all the IN, RATIO and OUT information by writing it in REPORT ITEMS table for example, but I've came across this problem (well not really a problem but rather a feature I'd like for a user to have). When the attribute on IN object is changed I want related objects (RATIO and OUT) automatically copied and related to a new IN object. So I was thinking something like: Take an existing instance of model IN that needs to change (call it old_in) Create a new one out of it with some attributes changed (call it new_in) Collect all the RATIO objects that are related to old_in Copy each RATIO and relate them to a new_in Collect all the OUT objects that are related to old RATIO Copy each OUT and relate them to a new RATIO Few questions pop to mind when i look at this problem: Should i just duplicate the data, does all this copying even make sense? If it does, should i rather do it in plain SQL? If no what would be the best approach to do it with Python and SQLAlchemy? Any general answer would suffice really, at least a pointer in right direction. I really want to free then end user for hassle of having create new ratios and out products.

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  • How the Google Chrome Linux version handles automatic version updation

    - by AJ
    Hello, Can some one tell me how the Chrome's Linux beta version carry out automatic version updation using debian package manager. I need to implement something similar to my application on linux and information provided here would be of lot of help. I am currently checking out the postinst script present in the debian control package and I can see Chrome uses PGP publish/subscribe model for getting automated version updates in Linux. I just clear understanding of how that works. Any help would be greatly appreciated. Thanks

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  • What does the symbol ::: mean in R

    - by Milktrader
    I came across this in the following context from B. Pfaff's "Analysis of Integrated and Cointegrated Time Series in R" ## Impulse response analysis of SVAR A-type model 1 args (vars ::: irf.svarest) 2 irf.svara <- irf (svar.A, impulse = ”y1 ” , 3 response = ”y2 ” , boot = FALSE) 4 args (vars ::: plot.varirf) 5 plot (irf.svara)

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  • How to I make a navigation-based app?

    - by Dyldo42
    Yes, I know, most of you are thinking I'm an idiot, butt (kidding) I'm not. I've been searching everywhere for something on how to fully make a navigation-based iphone app, but all I've found is how to set up table views or navigation controllers. I haven't found anything on how to create a data model (something simple from arrays and dictionaries, SQLite and CoreData are a bit out of my scope) or navigate it. Does anyone know of any tutorials or anything like that? Thanks.

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  • zend one controller many views

    - by Sherif
    hi there when i build my web site it was handling only one interface but now i need to handle many interface i can detect which site to communicate and isolate it from other sites but i stuck with this : all the sites have the same views ... is there are a way so i can rander from the same controller different views .. something like application application controller model site_1_view site_2_view is this possible ??!!

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  • Java Swing - Adding a row # column to a JTable

    - by llm
    I have data from a database loaded into a JTable through a custom table model. I want to have a column (should be the first column) which simply shows the display row number (i.e. it is not tied to any data (or sorting) but is simply the row number on the screen starting at 1). These "column headers" should be grayed out like the row headers. Any idea how to do this? Thanks

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  • WPF Custom Control containing a List of Objects

    - by Cecile
    Hi, I have an object Trip in my object model containing a list of Nodes (e.g. NodeName, StartDate and EndDate) and I am trying to build a Custom control in WPF that draws list of rectangles: one for each Node contained in the Trip object (based on StartDate en EndDate) Would you have any hint on how the Custom Control should be structured so that I can bind a Trip object to it and draw the rectangles properly, please?

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  • How to get password html helper to render password on failed validation

    - by Max Schmeling
    I have a form for creating a new account and it has a password field in it. I'm using view models to pass data to the controller action and back to the form view. When the user enters their details in, and clicks submit, if validation fails and it returns them to the same view passing back in the view model, it won't default the password to what they entered. How can I get it to do this? Or should I even try?

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  • Calculate value from two field in third field

    - by terence6
    I'm trying to create a query, that will calculate sum of products on invoice. I have 3 tables : Product (with product's price) Invoice (with invoice id) Products on invoice (with invoice id, product id and number of particular products) So in my query I take invoice_id (from invoice), price (from product),number of products sold and invoice_id (from products on invoice) and calculate their product in fourth column. I know I sohuld use 'Totals' but how to achieve that ? Model:

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  • basic modal dialog hiding problem

    - by senzacionale
    I am using basic modal dialog: http://www.ericmmartin.com/projects/simplemodal-demos/ $(document).ready(function() { $("#bodyTxt .basic").click(function() { var text = $(this).attr("title"); $("#basicModalContent").html(text).modal(); return false; }); }); but when i click on X code is now visible in page. How can after i close model dialog delete html code and add #basicModalContent display to none?

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  • CRON job for codeigniter

    - by ASD
    I am using codeigniter. I want to know how to set up a cron job to check a table for expiring users and insert data in to another table with the list of expiring users. How to do that. When i tried to write a script with controller and model to insert the table : Content-type: text/html Fatal error: Class 'Controller' not found in /home/content/html/test/live/application/controllers/cron.php on line 2

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  • Dynamic Data - Make Friendly Column Names?

    - by davemackey
    I've created a Dynamic Data project with an Entity Framework model. It works nicely. But, right now it shows all my database tables with the db column names - which aren't always the most friendly (e.g. address_line_1). How can I got about giving these more friendly column titles that will display to the end user?

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  • JQuery within a partial view not being called

    - by XN16
    I have a view that has some jQuery to load a partial view (via a button click) into a div in the view. This works without a problem. However within the partial view I have a very similar bit of jQuery that will load another partial view into a div in the first partial view, but this isn't working, it almost seems like the jQuery in the first partial view isn't being loaded. I have tried searching for solutions, but I haven't managed to find an answer. I have also re-created the jQuery function in a @Ajax.ActionLink which works fine, however I am trying to avoid the Microsoft helpers as I am trying to learn jQuery. Here is the first partial view which contains the jQuery that doesn't seem to work, it also contains the @Ajax.ActionLink that does work: @model MyProject.ViewModels.AddressIndexViewModel <script> $(".viewContacts").click(function () { $.ajax({ url: '@Url.Action("CustomerAddressContacts", "Customer")', type: 'POST', data: { addressID: $(this).attr('data-addressid') }, cache: false, success: function (result) { $("#customerAddressContactsPartial-" + $(this).attr('data-addressid')) .html(result); }, error: function () { alert("error"); } }); return false; }); </script> <table class="customers" style="width: 100%"> <tr> <th style="width: 25%"> Name </th> <th style="width: 25%"> Actions </th> </tr> </table> @foreach (Address item in Model.Addresses) { <table style="width: 100%; border-top: none"> <tr id="[email protected]"> <td style="width: 25%; border-top: none"> @Html.DisplayFor(modelItem => item.Name) </td> <td style="width: 25%; border-top: none"> <a href="#" class="viewContacts standardbutton" data-addressid="@item.AddressID">ContactsJQ</a> @Ajax.ActionLink("Contacts", "CustomerAddressContacts", "Customer", new { addressID = item.AddressID }, new AjaxOptions { UpdateTargetId = "customerAddressContactsPartial-" + @item.AddressID, HttpMethod = "POST" }, new { @class = "standardbutton"}) </td> </tr> </table> <div id="[email protected]"></div> } If someone could explain what I am doing wrong here and how to fix it then I would be very grateful. Thanks very much.

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  • SQL Server: How to tell if a database is a system database?

    - by Vinko Vrsalovic
    I know that so far (until MSSQL 2005 at least), system databases are master, model, msdb and tempdb. Thing is, as far as I can tell, this is not guaranteed to be preserved in the future. And neither the sys.databases view nor the sys.sysdatabases view tell me if a database is considered as a system database. Is there someplace where this information (whether a database is considered a system database or not) can be obtained?

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  • Deserialize JSON, sometimes value is an array, sometimes "" (blank string).

    - by karl.r
    I am trying to deserialize a field: "presenters":[{...},{...}] but some of the rows come back with only: "presenters":"" When the serializer gets to the row with that empty string I get: Error converting value "" to type 'System.Collections.Generic.List`1[DataPrototype.Model.Presenter]'. Am I right in thinking that I need a JsonConverter that will change the empty string into an empty List?

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  • grails: quering in a composite structure

    - by Asaf David
    hey i have the following domain model: class Location { String name static hasMany = [locations:Location, persons:Person] } class Person { String name } so basically each location can hold a bunch of people + "sub-locations". what is the best way to recursively query for all persons under a location (including it's sub locations, and their sub locations, etc')?

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  • Random Quote in html using codeignitor

    - by user1503606
    I am getting random quotes in my html see image below, and i cant for the life of me figure out how to get rid of them i have traced it right back to my model and their are now quotes there, i have also compressed all my code and there is still quotes??? Any one had this bug??? heres my php <ul><?php foreach ($account_media as $value) : ?><li class="span2"></li>?<?php endforeach; ?></ul> i am using codeignitor

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  • Entity Framework: An object with the same key already exists in the objectstatemanager

    - by NealR
    I see that this question has been asked a lot, however I haven't found anything yet that solves the problem I'm having. Obviously i'm using the Entity Framework to perform an update to a record. Once the updates are complete, however, whenever I try to save I get the following error message: An object with the same key already exists in the objectstatemanager At first I was passing in a collection object from the view that contained a copy of the the ZipCodeTerritory model object zipToUpdate. I changed the code by pulling this object out and just sending in the relevant fields instead. However, I'm still getting the same error. What's also weird is the first time I run this code, it works fine. Any attempt after that I get the error. Controller Here is the code from the method calling the edit function public static string DescriptionOnly(ZipCodeIndex updateZip) { if (!string.IsNullOrWhiteSpace(updateZip.newEffectiveDate) || !string.IsNullOrWhiteSpace(updateZip.newEndDate)) { return "Neither effective or end date can be present if updating Territory Code only; "; } _updated = 0; foreach (var zipCode in updateZip.displayForPaging.Where(x => x.Update)) { ProcessAllChanges(zipCode, updateZip.newTerritory, updateZip.newStateCode, updateZip.newDescription, updateZip.newChannelCode); } _msg += _updated + " record(s) updated; "; return _msg; } And here is the method that actually does the updating. private static void ProcessAllChanges(ZipCodeTerritory zipToUpdate, string newTerritory, string newStateCode, string newDescription, string newChannelCode) { try { if (!string.IsNullOrWhiteSpace(newTerritory)) zipToUpdate.IndDistrnId = newTerritory; if (!string.IsNullOrWhiteSpace(newStateCode)) zipToUpdate.StateCode = newStateCode; if (!string.IsNullOrWhiteSpace(newDescription)) zipToUpdate.DrmTerrDesc = newDescription; if (!string.IsNullOrWhiteSpace(newChannelCode)) zipToUpdate.ChannelCode = newChannelCode; if (zipToUpdate.EndDate == DateTime.MinValue) zipToUpdate.EndDate = DateTime.MaxValue; _db.Entry(zipToUpdate).State = EntityState.Modified; _db.SaveChanges(); _updated++; } catch (DbEntityValidationException dbEx) { _msg += "Error during update; "; EventLog.WriteEntry("Monet", "Error during ProcessAllChanges: " + zipToUpdate.ToString() + " |EX| " + dbEx.Message); } catch (Exception ex) { _msg += "Error during update; "; EventLog.WriteEntry("Monet", "Error during ProcessAllChanges: " + zipToUpdate.ToString() + " |MESSAGE| " + ex.Message); } } EDIT The ZipCodeIndex object contains a list of ZipCodeTerritory model objects. These aren't being pulled from a linq query, but instead simply passed back to the controller from the view. Here is the signature of the controller method that starts the process: [HttpPost] public ActionResult Update(ZipCodeIndex updateZip, string button)

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