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  • SQL: Recursively get parent records using Common Table Expressions

    - by Martijn B
    Hi there, Suposse you have to following tables where a sale consists of products and a product can be placed in multiple categories. Whereby categories have a hierachly structure like: Man Shoes Sport Casual Watches Women Shoes Sport Casual Watches Tables: Sale: id name 1 Sale1 Product: id saleidfk name 1 1 a 2 1 b 3 1 c 4 1 d 5 1 e ProductCategory : productid categoryid 1 3 2 3 3 4 4 5 5 10 Category: id ParentCategoryIdFk name 1 null Men 2 1 Shoes 3 2 Sport 4 2 Casual 5 1 Watches 6 null Women 7 6 Shoes 8 7 Sport 9 7 Casual 10 6 Watches Question: Now on my website I want to create a control where only the categories are shown of a certain sale and where the categories are filled with the products of the sale. I also want to include the hierachly structure of the categories. So if we have a leave node, recusivly go up to the top node. So with sale1 I should have a query with the following result: Men Shoes Sport Casual Watches Women Watches This thing is driving me crazy :-) Thanks in advance! Gr Martijn

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  • One-to-many relationship in the same table in zend

    - by Behrang
    I have groupTable(group_id,group_name,group_date,group_parent_id) in face each group have many group child I create groupModel and I want to begin coding is this right code to handle protected $_name = 'group'; protected $_dependentTables = array('Model_group'); protected $_referenceMap = array('Model_group' = array('columns' = array('group_parent_id') , 'refTableClass' = 'Model_group' , 'refColumns' = array('group_id') , 'onDelete' = self::CASCADE , 'onUpdate' = self::RESTRICT) );

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  • Table Partitioning

    - by Ankur Gahlot
    How advantageous is it to use partitioning of tables as compared to normal approach ? Is there a sort of sample case or detailed comparative analysis that could statistically ( i know this is too strong a word, but it would really help if it is illustrated by some numbers ) emphasize on the utility of the process. Thanks, Ankur

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  • Override ActiveRecord#save, Method Alias? Trying to mixin functionality into save method...

    - by viatropos
    Here's the situation: I have a User model, and two modules for authentication: Oauth and Openid. Both of them override ActiveRecord#save, and have a fair share of implementation logic. Given that I can tell when the user is trying to login via Oauth vs. Openid, but that both of them have overridden save, how do "finally" override save such that I can conditionally call one of the modules' implementations of it? Here is the base structure of what I'm describing: module UsesOauth def self.included(base) base.class_eval do def save puts "Saving with Oauth!" end def save_with_oauth save end end end end module UsesOpenid def self.included(base) base.class_eval do def save puts "Saving with OpenID!" end def save_with_openid save end end end end module Sequencer def save if using_oauth? save_with_oauth elsif using_openid? save_with_openid else super end end end class User < ActiveRecord::Base include UsesOauth include UsesOpenid include Sequencer end I was thinking about using alias_method like so, but that got too complicated, because I might have 1 or 2 more similar modules. I also tried using those save_with_oauth methods (shown above), which almost works. The only thing that's missing is that I also need to call ActiveRecord::Base#save (the super method), so something like this: def save_with_oauth # do this and that super.save # the rest end But I'm not allowed to do that in ruby. Any ideas for a clever solution to this?

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  • Multiple Table Inheritance vs. Single Table Inheritance in Ruby on Rails

    - by Tony
    I have been struggling for the past few hours thinking about which route I should go. I have a Notification model. Up until now I have used a notification_type column to manage the types but I think it will be better to create separate classes for the types of notifications as they behave differently. Right now, there are 3 ways notifications can get sent out: SMS, Twitter, Email Each notification would have: id subject message valediction sent_people_count deliver_by geotarget event_id list_id processed_at deleted_at created_at updated_at Seems like STI is a good candidate right? Of course Twitter/SMS won't have a subject and Twitter won't have a sent_people_count, valediction. I would say in this case they share most of their fields. However what if I add a "reply_to" field for twitter and a boolean for DM? My point here is that right now STI makes sense but is this a case where I may be kicking myself in the future for not just starting with MTI? To further complicate things, I want a Newsletter model which is sort of a notification but the difference is that it won't use event_id or deliver_by. I could see all subclasses of notification using about 2/3 of the notification base class fields. Is STI a no-brainer, or should I use MTI? Thanks!

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  • Jquery table cell

    - by Parhs
    Hello...This code produces a mess... What am i doing wrong??? cell=$("<td>"); if(normal.exam_type=="Exam_Boolean") { var input=cell.append("<input>").last(); input.attr("type","hidden"); input.attr("name","exam.exam_Normal['" +normal_id_unique + "'].boolean_v"); input.attr("value",normal.normal_boolean);

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  • Simplest possible table entry editing / addition / deletion web toolkit (for use with php)

    - by Dave
    Hi, i'm building a website in php and i have tables presented that i need to allow the user to: 1. add new entry (only one at a time, which should appear as a new modal overlay) 2. delete multiple selected entries from 3. edit an existing entry (only one at one time, in a view similar to 1.) 4. re-arrange entries up and down. One by one is fine. Multiple / Grouping rearrangements are not not needed what jquery / js / anything toolkit would be the SIMPLEST to work with? (of course, i should be able to work with it in php). I did try hacking away at: http://www.ericmmartin.com/projects/simplemodal/ but had a terrible time trying to get it to work on editing some existing data (had problem passing data to it).

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  • PHP edit unique row in table

    - by Robert
    I currently have a PHP form that uses AJAX to connect to MySQL and display records matching a user's selection (http://stackoverflow.com/questions/2593317/ajax-display-mysql-data-with-value-from-multiple-select-boxes) As well as displaying the data, I also place an 'Edit' button next to each result which displays a form where the data can be edited. My problem is editing unique records since currently I only use the selected values for 'name' and 'age' to find the record. If two (or more) records share the same name and age, I am only able to edit the first result.

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  • Set inner table border in HTML

    - by ripper234
    How do I set the "inner border" - the border between different cells. By setting style attributes I manage to control the outer border, but the inner border just stays the same gray color and the same width. What attributes should I tweak to control the inner border?

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  • Consecutive Tables in Latex

    - by Tim
    Hi, I wonder how to place several tables consecutively in Latex? The page with the text right before the first table has a little space but not enough for the first table, so the first table is to be placed on the top of the next page, although I use "\begin{table}[!h]" for it. The second table does not fit into the place in the rest of the page of the first table, so I think I might use longtable for it to span the rest of the page and the top of the next page. Similarly, I use longtable for the third table. The latex code is as follows: ... % some text \begin{table}[!h] \caption{Table 1. \label{tab:1}} \begin{center} \begin{tabular}{c c} ... \end{tabular} \end{center} \end{table} \begin{center} \begin{longtable}{ c c } \caption{Table 2. \label{tab:2}}\\ ... \end{longtable} \end{center} \begin{center} \begin{longtable}{ c c } \caption{Table 3. \label{tab:3}}\\ ... \end{longtable} \end{center} ... % some text In the compiled pdf file it turns out that the order of the tables is messed up. The first table is placed behind the second and third one, and the second one spans the page with text before the tables and the next page with the third one following it. I would like to know how I can make the three tables appear consecutively in order, and there are no space left blank between them and between the text and the tables? Or if what I hope is not possible, what is the best strategy then? Thanks and regards! EDIT: Removing [!h] does not make improvement, the first table is still behind the second and the third.

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  • Core Data table record count

    - by user339633
    I have an entity called Person and it has a relationship called participatingGames, to another entity called GameParticipant. I (apparently) can retrieve the number of matches in the GameParticipant entity using this simple code in the Person object I created from the entity in the model: [self.participatingGames count]; However, I'd just like to retrieve the number of Person records and one might guess the syntax for this is just as simple. I have lots of books including those by Jeff LaMarche, but those sources and what I find around here make me wonder if I need to set up a fetchedResultsController just to know the count of some entity. My background is in SQL, so of course it seems odd that what would take 15 seconds to code in any other environment seems like such a well-guarded secret in Core Data. I'm using iPhone SDK 3.1.4 under OSX 10.5.8 Suggestions?

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  • Zend Framework - Database Table Singleton

    - by Sonny
    I have found myself doing this in my code to 'cache' the work done when instantiating my Zend_Db_Table models: if (Zend_Registry::isRegistered('x_table')) { $x_table = Zend_Registry::get('x_table'); } else { $x_table = new Default_Model_DbTable_X; Zend_Registry::set('x_table', $x_table); } It bothered me that this method isn't very DRY and it dawned on me today that a singleton pattern would probably be a better way to do this. Problem is, I've never written a singleton class. When I did some web searches, I found some offhand comments about Zend_Db_Table singletons, but no real examples. I already have meta-data caching configured. How do I make my Zend_Db_Table models singletons? Are there pitfalls or downsides?

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  • Align table columns HTML

    - by Luigi Tiburzi
    I finally was able to align the columns in the tables of a page of my website. Though I found the solution I don't understand it. This is a fiddle I prepared. If you delete display: block from the CSS the columns are centered perfectly. The fact is that I don't understand what that instruction is causing problems, doesn't it means that elements are displayed as block elements? Shouldn't it cause the elements (the raw in particular) to fill an entire line? Thanks for your explanation

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  • Copying contents of a MySQL table to a table in another (local) database

    - by Philip Eve
    I have two MySQL databases for my site - one is for a production environment and the other, much smaller, is for a testing/development environment. Both have identical schemas (except when I am testing something I intend to change, of course). A small number of the tables are for internationalisation purposes: TransLanguage - non-English languages TransModule - modules (bundles of phrases for translation, that can be loaded individually by PHP scripts) TransPhrase - individual phrases, in English, for potential translation TranslatedPhrase - translations of phrases that are submitted by volunteers ChosenTranslatedPhrase - screened translations of phrases. The volunteers who do translation are all working on the production site, as they are regular users. I wanted to create a stored procedure that could be used to synchronise the contents of four of these tables - TransLanguage, TransModule, TransPhrase and ChosenTranslatedPhrase - from the production database to the testing database, so as to keep the test environment up-to-date and prevent "unknown phrase" errors from being in the way while testing. My first effort was to create the following procedure in the test database: CREATE PROCEDURE `SynchroniseTranslations` () LANGUAGE SQL NOT DETERMINISTIC MODIFIES SQL DATA SQL SECURITY DEFINER BEGIN DELETE FROM `TransLanguage`; DELETE FROM `TransModule`; INSERT INTO `TransLanguage` SELECT * FROM `PRODUCTION_DB`.`TransLanguage`; INSERT INTO `TransModule` SELECT * FROM `PRODUCTION_DB`.`TransModule`; INSERT INTO `TransPhrase` SELECT * FROM `PRODUCTION_DB`.`TransPhrase`; INSERT INTO `ChosenTranslatedPhrase` SELECT * FROM `PRODUCTION_DB`.`ChosenTranslatedPhrase`; END When I try to run this, I get an error message: "SELECT command denied to user 'username'@'localhost' for table 'TransLanguage'". I also tried to create the procedure to work the other way around (that is, to exist as part of the data dictionary for the production database rather than the test database). If I do it that, way, I get an identical message except it tells me I'm denied the DELETE command rather than SELECT. I have made sure that my user has INSERT, DELETE, SELECT, UPDATE and CREATE ROUTINE privileges on both databases. However, it seems as though MySQL is reluctant to let this user exercise its privileges on both databases at the same time. How come, and is there a way around this?

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  • What JavaScript table widgets you can recommend? [2]

    - by sdespolit
    As so far i've "found" Yahoo UI library and it fully conforms to my requirements. Also there is jqGrid that i'm using right now. If there are any alternatives? UPDATE: Please suggest libraries and don't seek for matching all the requirements listed below. [i'll check it for myself] My reqs are: rows adding, deletinig rows reoder (optionally with drag and drop) rows selection inline editing json data over xhr (optional) simple integration with backbone.js disclaimer: there was almost the same question 2 years ago

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  • How to set up a simple table view in Cocoa

    - by happyCoding25
    Hello, I was wondering if anyone could give me an example or point me to some example code of how to use an NSTableView. I know how to use it in core data but I would like to do this just using plain cocoa code. All I need is a simple add and remove button. Also is it possible to have cocoa write the data to a text file or plist? Thanks for any help

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  • Excel vba: error hiding calculated field in Pivot table

    - by Patrick Honorez
    I have written several Subs to show/hide fields in a PivotTable. Now I am trying to do the same with a calculated field, but I get an error when hiding it. I took my code from the recorder and the recorder's code also halts on the last line. I googled the error message, without serious result. Sub PrRemove() 'remove PR Dim pt As PivotTable Set pt = ActiveSheet.PivotTables("MyPivot") pt.PivotFields("MyField").Orientation = xlHidden '<- here is the error End Sub The same code works fine if MyField is a normal field (not a calculated one). I am using Excel 2007 with SP2. Any clue ?

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  • Magento table rates custom options

    - by Usman Ahmad
    in Tablerate.php I want to change the calculation. So for some Products with custom options like width, height the shipping cost must change. I tried with this method to find out if one product in cart has width or height greater than 60cm (example). But currently I have no Idea how to get custom option values... this code working well. foreach ($request->getAllItems() as $item) { echo 'Name: '.$item->getName(). '<br/> SKU:'.$item->getSku(). '<br/> ProductID: '.$item->getProductId(). '<br/> Price: '.$item->getPrice().'<br/>'; } Thanks

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  • Proper html markup of table tags?

    - by Gazow
    kind of a silly question, but ive been seeing things such as tbody and thead/tfood tags in other peoples tables are these required even if they're empty for good markup? or can i just leave them out? thanks

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  • Lining up content in divs without table cells

    - by Mike
    Hi, I have two rows of links like: Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7 LInk 8 I need the top four links to align with the top bottom links regardless of how many characters are in the link. For example, This is link 1 This is link 2 Link 3 L4 LInk 1 Link 2 that is longer Link 3 L4 I can do this with tables and td cells but how can this be accomplished just using divs? Thanks.

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