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  • Is there any way to use GUIDs in django?

    - by Jason Baker
    I have a couple of tables that are joined by GUIDs in SQL Server. Now, I've found a few custom fields to add support for GUIDs in django, but I tend to shy away from using code in blog posts if at all possible. I'm not going to do anything with the GUID other than join on it and maybe assign a GUID on new entries (although this is optional). Is there any way to allow this using django's built-in types? Like can I use some kind of char field or binary field and "trick" django into joining using it? If it's any help, I'm using django-pyodbc.

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  • Linq order by aggregate in the select { }

    - by Joe Pitz
    Here is one I am working on: var fStep = from insp in sq.Inspections where insp.TestTimeStamp > dStartTime && insp.TestTimeStamp < dEndTime && insp.Model == "EP" && insp.TestResults != "P" group insp by new { insp.TestResults, insp.FailStep } into grp select new { FailedCount = (grp.Key.TestResults == "F" ? grp.Count() : 0), CancelCount = (grp.Key.TestResults == "C" ? grp.Count() : 0), grp.Key.TestResults, grp.Key.FailStep, PercentFailed = Convert.ToDecimal(1.0 * grp.Count() /tcount*100) } ; I would like to orderby one or more of the fields in the select projection.

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  • How to log POSTed forms submissions?

    - by justSteve
    Back in the ASP classic days when i needed to write out the name/value pairs of forms submitted by POST i thru this loop into the page: on error resume next for each x in Request.Form Response.AppendToLog x & "=" & Request(x) next It threw all the form fields and values into the log just as GETs are. Does IIS7 .net give me any better method? (this is for the dev/testing portion of the project i don't have any concern about the space or cycles used to accomplish this). thx

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  • Is there a way to query if array field contains a certain value in Doctrine2?

    - by dpimka
    Starting out with Symfony2 + Doctrine. I have a table with User objects (fos_user), for which my schema contains a roles column of an 'array' type. Doctrine saves fields of this type by serializing them from php 'array' to 'longtext' (in mysql's case). So let's say I have the following users saved into DB: **User1**: array(ROLE_ADMIN, ROLE_CUSTOM1) **User2**: array(ROLE_ADMIN, ROLE_CUSTOM2) **User3**: array(ROLE_CUSTOM2) Now in my controller I want to select all users with ROLE_ADMIN set. Is there a way to write a DQL query which would directly return me User1 and User2? Or do I need to fetch all users to have Doctrine to unserialize roles column and then for each of them do in_array('ROLE_ADMIN', $user-getRoles())? I have searched the DQL part of the manual, but so far did not find anything similar to my needs...

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  • How to use your computer to save the world?

    - by Francisco Garcia
    Sometimes I miss the "help other people" factor within computer-related fields. However, there are little things that we all can do to make this a better place—beyond trying to eradicate annoying stuff such as Visual Basic. You could join a cloud computing network such as World Community Grid to fight cancer, write a charityware application such as Vim, improve office IT infrastructure to support telecommuting and reduce CO2 emissions, use an ebook reader to save paper, ... What else can we do to help others? Which projects can have the biggest impact?

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  • COUNT issue across multiple tables

    - by Kim
    I am trying to count across 2 tables and I dont see whats wrong with my query yet I get a wrong result. User 2 does not exist in table_two, so the zero is correct. SELECT t1.creator_user_id, COUNT(t1.creator_user_id), COUNT(t2.user_id) FROM table_one AS t1 LEFT JOIN table_two AS t2 ON t2.user_id = t1.creator_user_id GROUP BY t1.creator_user_id, t2.user_id Actual result 1 192 192 2 9 0 Expected result 1 16 12 2 9 0 The result indicate a missing group by condition, but I already got both fields used. Where am I wrong ? Also, can I sum up all users that doesnt exist in table_two for t1 ? Like user 3 exists 21 times in t1, then the results would be: 1 16 12 (users with > 0 in t2 will need their own row) 2 30 0 (user 2=9 + user 3=21 => 30) Its okay for the user Id to be wrong for sum of t1 for all users with 0 in t2. If not possible, then I'll just do two queries.

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  • Serialize Dictionary with a string key and List[] value to JSON

    - by Patrick
    How can I serialize a python Dictionary to JSON and pass back to javascript, which contains a string key, while the value is a List (i.e. []) if request.is_ajax() and request.method == 'GET': groupSet = GroupSet.objects.get(id=int(request.GET["groupSetId"])) groups = groupSet.groups.all() group_items = [] #list groups_and_items = {} #dictionary for group in groups: group_items.extend([group_item for group_item in group.group_items.all()]) #use group as Key name and group_items (LIST) as the value groups_and_items[group] = group_items data = serializers.serialize("json", groups_and_items) return HttpResponse(data, mimetype="application/json") the result: [{"pk": 5, "model": "myApp.group", "fields": {"name": "\u6fb4\u9584", "group_items": [13]}}] while the group_items should have many group_item and each group_item should have "name", rather than only the Id, in this case the Id is 13. I need to serialize the group name, as well as the group_item's Id and name as JSON and pass back to javascript. I am new to Python and Django, please advice me if you have a better way to do this, appreciate. Thank you so much. :)

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  • Android: how can i tell if the soft keyboard is showing or not?

    - by binnyb
    Heres the dilemma: I am showing a screen with 3 input fields and 2 buttons inside of a tab(there are 3 tabs total, and they are on the bottom of the screen). the 2 buttons are set to the bottom left and right of the screen, right above the tabs. when i click on an input field, the tabs and buttons are all pushed up on top of the keyboard. i desire to only push the buttons up, and leave the tabs where they originally are, on the bottom. i am thinking of setting the visibility of the tabs to GONE once i determine that the soft keyboard is showing, and visibility to VISIBLE once the soft keyboard is gone. is there some kind of listener for the soft keyboard, or maybe the input field? maybe some tricky use of OnFocusChangeListener for the edit text? How can i determine whether the keyboard is visible or not?

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  • Nhibernate Bind

    - by user329983
    I have two oracle user defined types: Audit_Type – A normal object with two fields a string and a number Audit_Table_Type – A table of audit_types, (an array) I have a stored procedure that takes as a parameter an Audit_Table_Type. List<Audit_Type> table = new List<Audit_Type>(); var query = session.CreateSQLQuery("call Audit_Rows(Audit_Table_Type(:table))") .SetParameterList("table", table, NHibernateUtil.Custom(typeof(AuditTypeUDT))) This is what I did intuativly created the ICompositeType and just set in a list of them in but this gives me nothing close to what I wanted. I couldn’t figure out how to bind to a table at all. I have built the inline sql that would do this for me but it would destroy my shared pool (not using binds). So a General question how do I bind to complex/composite types using Nhibernate?

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  • Sql Server XML-type column duplicate entry detection

    - by aaaa bbbb
    In Sql Server I am using an XML type column to store a message. I do not want to store duplicate messages. I only will have a few messages per user. I am currently querying the table for these messages, converting the XML to string in my C# code. I then compare the strings with what I am about to insert. Unfortunately, Sql Server pretty-prints the data in the XML typed fields. What you store into the database is not necessarily exactly the same string as what you get back out later. It is functionally equivalent, but may have white space removed, etc. Is there an efficient way to compare an XML string that I am considering inserting with those that are already in the database? As an aside, if I detect a duplicate I need to delete the older message then insert the replacement.

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  • Data clean up: are there libraries of common permutations that we can use? Or is there a better appr

    - by anyaelena
    We are working on clean-up and analysis of a lot of human-entered customer data. We need to decide programmatically whether 2 addresses (for example) are the same, even though the data was entered with slight variations. Right now we run each address through fairly simplistic string replacement (replacing avenue with ave, for example), concatenate the fields and compare the results. We are doing something similar with names. At the very least, it seems like our list of search-replace values should already exist somewhere. Or perhaps you can suggest a totally different and superior way to detect matches?

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  • Best way to correct garbled data caused by false encoding

    - by ercan
    Hi all, I have a set of data that contains garbled text fields because of encoding errors during many import/exports from one database to another. Most of the errors were caused by converting UTF-8 to ISO-8859-1. Strangely enough, the errors are not consistent: the word 'München' appears as 'München' in some place and as 'MÃœnchen'. Is there a trick in SQL server to correct this kind of crap? The first thing that I can think of is to exploit the COLLATE clause, so that ü is interpreted as ü, but I don't exactly know how. If it isn't possible to make it in the DB level, do you know any tool that helps for a bulk correction? (no manual find/replace tool, but a tool that guesses the garbled text somehow and correct them)

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  • MySQL: Efficient Blobbing?

    - by feklee
    I'm dealing with blobs of up to - I estimate - about 100 kilo bytes in size. The data is compressed already. Storage engine: InnoDB on MySQL 5.1 Frontend: PHP (Symfony with Propel ORM) Some questions: I've read somewhere that it's not good to update blobs, because it leads to reallocation, fragmentation, and thus bad performance. Is that true? Any reference on this? Initially the blobs get constructed by appending data chunks. Each chunk is up to 16 kilo bytes in size. Is it more efficient to use a separate chunk table instead, for example with fields as below? parent_id, position, chunk Then, to get the entire blob, one would do something like: SELECT GROUP_CONCAT(chunk ORDER BY position) FROM chunks WHERE parent_id = 187 The result would be used in a PHP script. Is there any difference between the types of blobs, aside from the size needed for meta data, which should be negligible.

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  • Alter text field focus order with jQuery

    - by Akinator
    Hi, I was wondering, if I have text fields displayed so, could I alter the order in which the focus using javascript (preferably jQuery). See this example here. What I mean that when you tab around them, instead on going "one, two, three, four, five" force them to go: "one, two, four, three, five". Thanks in advance!! EDIT: Thanks to all, I didn´t know it was possible with HTML only. Of course if this is the case I´ll go with that. BTW Thanks to all your answers!!! (I`ll upvote the complete ones) but will accept the first one.

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  • Java - JPA - Generators - @SequenceGenerator

    - by Yatendra Goel
    I am learning JPA and have confusion in the @SequenceGenerator annotation. Upto my understanding, it automatically assigns a value to numeric identity fields/properties of an entity. Q1. Does this sequence generator make use of the database's increasing numeric value generating capability or generates the number on his own? Q2. If JPA uses database auto increement feauture, then will it work with datastores that don't have auto increement feature? Q3. If JPA generate numeric value on his own, then how the JPA implementation knows which value to generate next? Does it consult with the database first to see what value was stored last so as to generate the value (last + 1). ====================================================================================== Q4. Please also throw some light on sequenceName and allocationSize properties of @SequenceGenerator annotation.

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  • How to insert an n:m-relationship with technical primary keys generated by a sequence?

    - by bitschnau
    Let's say I have two tables with several fields and in every table there is a primary key which is a technical id generated by a database sequence: table1 table2 ------------- ------------- field11 <pk> field21 <pk> field12 field22 field11 and field21 are generated by sequences. Also there is a n:m-relationship between table1 und table2, designed in table3: table3 ------------- field11 <fk> field21 <fk> The ids in table1 und table2 are generated during the insert statement: INSERT INTO table1 VALUES (table1_seq1.NEXTVAL, ... INSERT INTO table2 VALUES (table2_seq1.NEXTVAL, ... Therefore I don't know the primary key of the added row in the data-access-layer of my program, because the generation of the pk happens completely in the database. What's the best practice to update table3 now? How can I gain access to the primary key of the rows I just inserted?

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  • Calculate actual time from different timezones in php

    - by Thinker
    Hai, I would like to calculate actual time from different timezones. I have two mysql tables 1.Timezone table: This table contians two fields (offset value, country name) values are ( -12:00, Eniwetok, Kwajalein) (-11:00, Midway Island, Samoa).... so on 2.My employee table This table contains the employees details with two field names (created_on, timezone) and the values are (current timestamp, -11:00) (current timestamp, -12:00)..... so on Now, If my employee logged in to my system, i want to display the time according to their timezones values from tables. Basically if my Current timestamp is :2010-05-10 15:41:39 offset values is: +5:30 my result should be : 10 May 2010 3:41pm the same for different offset values for the same current timestamp. I believe i explained the issue correctly, if you want any information, please ask me.

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  • How to do query auto-completion/suggestions in Lucene?

    - by Mat Mannion
    I'm looking for a way to do query auto-completion/suggestions in Lucene. I've Googled around a bit and played around a bit, but all of the examples I've seen seem to be setting up filters in Solr. We don't use Solr and aren't planning to move to using Solr in the near future, and Solr is obviously just wrapping around Lucene anyway, so I imagine there must be a way to do it! I've looked into using EdgeNGramFilter, and I realise that I'd have to run the filter on the index fields and get the tokens out and then compare them against the inputted Query... I'm just struggling to make the connection between the two into a bit of code, so help is much appreciated! To be clear on what I'm looking for (I realised I wasn't being overly clear, sorry) - I'm looking for a solution where when searching for a term, it'd return a list of suggested queries. When typing 'inter' into the search field, it'll come back with a list of suggested queries, such as 'internet', 'international', etc.

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  • Deep Copy using Reflection in an Extension Method for Silverlight?

    - by didibus
    So I'm trying to find a generic extension method that creates a deep copy of an object using reflection, that would work in Silverlight. Deep copy using serialization is not so great in Silverlight, since it runs in partial trust and the BinaryFormatter does not exist. I also know that reflection would be faster then serialization for cloning. It would be nice to have a method that works to copy public, private and protected fields, and is recursive so that it can copy objects in objects, and that would also be able to handle collections, arrays, etc. I have searched online, and can only find shallow copy implementations using reflection. I don't understand why, since you can just use MemberwiseClone, so to me, those implementations are useless. Thank You.

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  • Add page item to either Joomla, Drupal or Wordpress

    - by HP
    I just want to design this very simple website. Basically there are multiple pages A, B, C... and each page has item A1, A2.. or B1, B2... These items follow fixed HTML template (table,image) and only specific content fields (name, body text..) can be change in the back-end. Backend users can add new pages or new items each page. Does anyone know some plugin for either Joomla, Drupal or Wordpress that can do the simple purpose above? Thanks

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  • reading from HTML nad inserting in form

    - by purushottam
    I have to read the content from HTML file and then the parameters for different heading should be entered into the form in php and then i need to save the page and submit it so that it will be saved in the databse. I need to automate this whole process since i have approx 2000 HTML files which should be read and should be entered in a form in PHP. Do you have any idea about any tool which can help in this process. small idea will be also helpful. Note : i can not enter the contents from HTML directly into the databse from back end since there are many fields which are getting auto generated when i am saving and submitting the form. thanks in advance.

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  • SQL Syntax for Complex Scenario (Deals)

    - by Yisman
    hello everyone i have a complex query to be written but cannot figure it out here are my tables Sales --one row for each sale made in the system SaleProducts --one row for each line in the invoice (similar to OrderDetails in NW) Deals --a list of possible deals/offers that a sale may be entitled to DealProducts --a list of quantities of products that must be purchased in order to get a deal now im trying to make a query which will tell me for each sale which deals he may get the relevant fields are: Sales: SaleID (PK) SaleProducts: SaleID (FK), ProductID (FK) Deals: DealID (PK) DealProducts: DealID(FK), ProductID(FK), Mandatories (int) for required qty i believe that i should be able to use some sort of cross join or outer join, but it aint working here is one sample (of about 30 things i tried) SELECT DealProducts.DealID, DealProducts.ProductID, DealProducts.Mandatories, viwSaleProductCount.SaleID, viwSaleProductCount.ProductCount FROM DealProducts LEFT OUTER JOIN viwSaleProductCount ON DealProducts.ProductID = viwSaleProductCount.ProductID GROUP BY DealProducts.DealID, DealProducts.ProductID, DealProducts.Mandatories, viwSaleProductCount.SaleID, viwSaleProductCount.ProductCount the problem is that it doesnt show any product deals that r not fullfiled (probably because of the productid join). i need that also sales that dont have the requiremnets show up, then i can filter out any saleid that exists in this query "where AmountBought thank you for your help

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  • XSL template structure for choosing latest event.

    - by Deborah Klenke
    I have a list grouped by Region and it currently shows all the items for each city. I want to reduce to only the most recent advisory for each city. I have tried to use an xsl:for-each statement but I am messing up the names/parameters. List is called mlc The list contains the fields: Title City Region Advisory DateCreated TT (calculated number field to find the number of minutes from the DateCreated to end of today which I intended to use the smallest to find the most recent) I have the list grouped by Region and it currently shows all the items for each city. I want to reduce to only the most recent advisory for each city.

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  • Custom setter methods in Core-Data

    - by andrewebling
    I need to write a custom setter method for a field (we'll call it foo) in my subclass of NSManagedObject. foo is defined in the data model and Xcode has autogenerated @property and @dynamic fields in the .h and .m files respectively. If I write my setter like this: - (void)setFoo: (NSObject *)inFoo { [super setFoo: inFoo]; [self updateStuff]; } then I get a compiler warning on the call to super. Alternatively, if I do this: - (void)setFoo: (NSObject *)inFoo { [super setValue: inFoo forKey: inFoo]; [self updateStuff]; } then I end up in an infinite loop. So what's the correct approach to write a custom setter for a subclass of NSManagedObject?

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  • Overriding the default error message for a ModelForm

    - by Jude Osborn
    Is there any way to override a error_message text for all the fields of a ModelForm's, without having to include all the field info in the ModelForm? For example, let's say I have a (very simple) model like this: People(models.Model): name = models.CharField(max_length=128, null=True, blank=True, help_text="Please type your name.") age = models.IntegerField(help_text="Please type your age.") I don't like the cut and dry default messages, such as, "Enter a whole number.", so I'd like to change them to something a bit nicer like "Please type a number." Ideally I'd be able to add an "error_message" property in the model, but the model does not support that property. So does that mean I have to basically duplicate all the model info in my ModelForm, or is there a way around that?

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