Search Results

Search found 13135 results on 526 pages for 'actor model'.

Page 412/526 | < Previous Page | 408 409 410 411 412 413 414 415 416 417 418 419  | Next Page >

• MVC for web development: Sign-up form?

  - by incrediman

  How would I go about implementing a signup form using the MVC pattern for a website (I'm using PHP)? I think the controller should receive the POST data initially. Then probably some interation with the model might need to take place (if the user successfully signs up). Then I think the signup form view would be called, and a value would be passed in saying whether or not the signup was successful. Stuff I need help with: Where do I do input validation (ie. proper email address formatting)? How do I check to make sure the username is unique? Is the rest of my description alright? How would you go about doing an MVC website signup form?

  Read the article

• Publish/Subscribe paradigm: Why must message classes not know about their subscribers?

  - by carleeto

  From Wikipedia: "Publish/subscribe (or pub/sub) is a messaging paradigm where senders (publishers) of messages are not programmed to send their messages to specific receivers (subscribers). Rather, published messages are characterized into classes, without knowledge of what (if any) subscribers there may be" I can understand why a sender must not be programmed to send its message to a specific receiver. But why must published messages be classes that do not have knowledge of their subscribers? It would seem that once the messaging system itself is in place, what typically changes as software evolves is the messages sent, the publishers and the receivers. Keeping the messages separate from the subscribers seems to imply that the subscription model might also change. Is this the reason? Also, does this occur in the real world? I realize this may be a basic question, but I'm trying to understand this paradigm and your replies are very much appreciated.

  Read the article

• How do I produce an external URL as part of a replace_html call in Ruby on Rails?

  - by vlasits

  Basically, I am attempting to render an external website (the url of which is stored in the database) into a page in my Ruby on Rails app. I have a field in my model 'search' called 'search' that contains web addresses with the form 'www.example.com' or 'example.com'. I am trying to use a link_to_function call with replace_html to replace the 'maincontent' div with an iframe tag using the value of 'search' in the current instance as the src for the tag. My current attempt is the very ugly code below. I'd be grateful for either of the following types of responses: How can I rewrite the concatenation string to work correctly? How can I get the same effect (replacing the current content of the "mainContent" div with an iframe tag using a different method? (I had to modify the code before to remove the < from the iframe) link_to_function h(search.title) do |page| page.replace_html 'mainContent', 'iframe id="embedded" src="http://" + #{search.search} />' end

  Read the article

• How do I dynamically change the path_to()?

  - by Angela

  I currently have three methods which I want to collapse into one: def send_email(contact,email) end def make_call(contact, call) return link_to "Call", new_contact_call_path(:contact => contact, :call => call, :status => 'called') end def make_letter(contact, letter) return link_to "Letter", new_contact_letter_path(:contact => contact, :letter => letter, :status => 'mailed') end I want to collapse the three into one so that I can just pass the Model as one of the parameters and it will still correctly create the path_to. I am trying to do this with the following, but stuck: def do_event(contact, call_or_email_or_letter) model_name = call_or_email_or_letter.class.name.tableize.singularize link_to "#{model_name.camelize}", new_contact_#{model_name}_path(contact, call_or_email_or_letter)" end

  Read the article

• sorting extendeddatatable in richfaces

  - by user414597

  Hello All, does anyone know how exactly the default sorting works in richfaces datatable columns? (using sortby) My problem is that once a sort has been performed, the new data order is never preserved in my backing's bean data model (which makes me wonder where is this new order now stored?), that is the actual datamodel always contains just the original data.. So if say user goes to a another page and returns to what should be sorted data (using back button) , the data displays as original, not sorted.. Has anyone come across this? also, is there a way to do server side sorting, i.e. call my own sort method upon clicking the header..? many thanks for any advice!

  Read the article

• Find git branch that got pushed to a bare repository.

  - by Senthil A Kumar

  Lets have 2 repositories, one containing the actual data repo and a bare repository which is loaded with deltas from the actual data repository by doing a git push from data repo to bare repo. Hope you have understood the model that am using here. Am creating clones by cloning the bare repo, and i will be pushing from the branches in my local clone to the branches in bare repository. When am pushing data from my branch to bare repo, the data is automatically synced to the data repo by a hook. The question i have - is there a way to find from which branch a code has come to the bare repo. I can see the source and target branch during a git push, but after pushing can i see from logs or other way to identify from which branch and repository the data has been pushed from? If there are 5 developers pushing to bare repo, can i find in the bare repo from which branch and clone a code is pushed?

  Read the article

• ASP MVC Creating Form Rows Dynamically

  - by Jonathan Stowell

  Hi Guys, I haven't even attempted this yet and am creating this question for advice really. I have a strongly typed page which receives a form model composed of several components. It is to create a mitigating circumstance (MC) for a student at a university for my final year project. A MC can be composed of the initial problem, assessment extensions, and I use a multi select box to allow the user to select staff retrieved from the database which are able to view the MC once created. The thing is I feel that a student could be granted many assignment extensions for one problem. I am wander if it is possible to include a button/image on the form which when clicked will create a new assessment extension object, and duplicate the form components to set the values for the object? This would all need to occur without any page refreshes. Any advice, or links to good tutorials would be appreciated. I have so far been unable to find any suitable examples. Thanks, Jon

  Read the article

• Transparently storing class state without exposing implementation

  - by RoToRa

  I have a model (MVC) class whose internal state (which basically contains of private int fields) I want to store. The program is running on Android (for now) so I need to store the in a Bundle, but I'll be using the same class later in a desktop application where I'll have to store the state some other way, so I can't reference Bundle directly in my class. So my question is: What is the best way to store (and retrieve) the state of a class without exposing it's implementation? The best I could think of removing the private access modifier so that the fields become package accessible and create read/write helper classes in the same package, but that somehow seems wrong.

  Read the article

• Pattern for unidirectional has_many join?

  - by Kris

  It occurred to me that if I have a has_many join, where the foreign model does not have a belongs_to, and so the join is one way, then I don't actually need a foreign key. We could have a column, category_ids, which stores a marshaled Array of IDs which we can pass to find. So here is an untested example: class page < AR def categories Category.find(self.category_ids) end def categories<<(category) # get id and append to category_ids save! end def category_ids @cat_ids ||= Marshal.load(read_attribute(:category_ids)) rescue [] end def category_ids=(ids) @cat_ids = ids write_attribute(:category_ids, ids) end end page.category_ids = [1,4,12,3] page.categories = Array of Category Is there accepted pattern for this already? Is it common or just not worth the effort?

  Read the article

• How to distinguish date at midnight from date w/o time in Oracle?

  - by Swiety

  I would like to distinguish date at midnight (i.e. '12/05/2010 00:00:00') from date without time specified (i.e. '12/05/2010'). This value is provided by user, sometimes it is only date which is important, sometimes it is date and time and later the application is expected to show the time only when it was explicitly provided. So for the following inputs I would expect the following outputs: for '12/05/2010' I would expect '12/05/2010' for '12/05/2010 09:23' I would expect '12/05/2010 09:23' for '12/05/2010 00:00' I would expect '12/05/2010 00:00' I know I can model it in two separate columns, date and time, but I was wondering was there any way of handling this in single date column?

  Read the article

• Class views in Django

  - by Sebastjan Trepca

  Django view points to a function, which can be a problem if you want to change only a bit of functionality. Yes, I could have million keyword arguments and even more if statements in the function, but I was thinking more of an object oriented approach. For example, I have a page that displays a user. This page is very similar to page that displays a group, but it's still not so similar to just use another data model. Group also has members etc... One way would be to point views to class methods and then extend that class. Has anyone tried this approach or has any other idea?

  Read the article

• No difference between nullable:true and nullable:false in Grails 1.3.6?

  - by knorv

  The following domain model definition .. class Test { String a String b static mapping = { version(false) table("test_table") a(nullable: false) b(nullable: true) } } .. yields the following MySQL schema .. CREATE TABLE test_table ( id bigint(20) NOT NULL AUTO_INCREMENT, a varchar(255) NOT NULL, b varchar(255) NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; Please note that a and b get identical MySQL column definitions despite the fact a is defined as non-nullable and b is nullable in the GORM mappings. What am I doing wrong? I'm running Grails 1.3.6.

  Read the article

• Active Scaffold + Ruby 2.3.5 not working

  - by rodrigoaronas

  Hello, I have an application with Rails 2.3.5. And Im trying to use AS latest version, I have used it previously but cant make it work here. I have my ingredient_categories Controller, where i put class Administration::IngredientCategoriesController < ApplicationController layout "default" active_scaffold :ingredient_categories end I have this set up on routes to be :active_scaffold=true I have a model also called ingredient_category, and in the views folder (inside administration/ingredient_categories, and /ingredient_categories) i have nothing as it is usual. And Im getting over and over again: Template is missing Missing template ingredient_categories/list.html in view path themes/aqueouslight:app/views I had an error before asking me for a list.erb, which I created and put <%= render :active_scaffold = 'ingredient_categories', :label = 'Categorias' % And now this error of the list.thml... Cant make it work! dont know whhy really... whould be SO simple and its burning my head now.. Thanks!

  Read the article

• How do I do a has_many through association on a has_many through association in rails?

  - by Angela

  Warning: I may have the wrong 'problem statement' but here it goes: A Campaign has many Contacts. A Campaign has many Emails. Therefore, a Contact has many Emails through a Campaign. And an Email can have many Contacts through a Campaign. Each Contact-Email pair has its own unique Status (status1, status2, etc). Each Status (for a Contact-Email pair) will have its own User. I do not know how to model Status, or User. Currently the immediate challenge is Status. (see diagram below)

  Read the article

• Is it possible to use Data Annotations to validate parameters passed to an Action method of a Contro

  - by dannie.f

  I am using Data Annotations to validate my Model in ASP.NET MVC. This works well for action methods that has complex parameters e.g, public class Params { [Required] string Param1 {get; set;} [StringLength(50)] string Param2 {get; set;} } ActionResult MyAction(Params params) { If(ModeState.IsValid) { // Do Something } } What if I want to pass a single string to an Action Method (like below). Is there a way to use Data Annotations or will I have to wrap the string into a class? ActionResult MyAction(string param1, string param2) { If(ModeState.IsValid) { // Do Something } }

  Read the article

• iOS - Losing in-app subscription?

  - by user3280451

  I've just built an iOS app that uses a non-reoccuring subscription model. You hit "buy" and then when the client device receives the receipt from the Apple server it whizzes it off to my server to validate it and add the subscription to my user database. If the connection fails before my server has responded then the request is cached, ready to be resent the next time the client comes online. My problem is, what happens if the connection fails between when the user hits the buy button and the receipt is received by the client from Apple? Theres no way for it to know that the purchase has been made? Presumably I should add a "restore purchases" button that sends all of the users receipts to my server which checks if they've already been validated and their respective subscriptions added to the database? Is there a less intrusive way of doing this?

  Read the article

• pass parameter from controller to models condition

  - by Alex

  I'm trying to bind a param to a join via a named scope., but I'm getting an error. What is the correct way to do that? has_one :has_voted, :class_name => 'Vote', :conditions => ['ip = :userIp'] # named scopes scope :with_vote, lambda {|ip| { :include => [:has_voted], # like this ?? :conditions => [:has_voted => {:conditions => {:userIp => ip}} ] }} Idea.with_vote(request.ip).all I believe I need the condition definition in the model for it to appear in the ON clause of a JOIN, rather then in the WHERE one. Edit I'm trying to get the following query select Ideas.*, Votes.* from Ideas left outer join Votes on Votes.Idea_id = Idea.id AND Votes.ip = {request.ip}

  Read the article

• Django: how to pass form variable to simple tag in template

  - by Remigijus

  Hello. I am trying to do some custom things in Django comments form. I have simple tag named "get_flatpage_by_id" that returns flatpage model data as array. This is working I expected: {% get_flatpage_by_id 14 as page %} It's returning flatpage that ID is 14. But this is not working, if I try to pass {{ form.object_pk.data }} (that returns 14). This is how it should look like: {% get_flatpage_by_id form.object_pk.data as page %} Simple tag receives value "form.object_pk.data" (string), not 14. I don't know how to tell Django that "form.object_pk.data" is variable, not a string!

  Read the article

• Polymorphic associations in Rails

  - by Newy

  Say I have two models, Apples and Oranges, and they are both associated with a description in a Text model. Text is a separate class as I'd like to keep track of the different revisions. Is the following correct? Is there a better way to do this? [Apple] has_one :text, :as => :targit, :order => 'id DESC' has_many :revisions, :class_name => 'Text', :as => :targit, :order => 'id', :dependent => :destroy [Text] belongs_to :targit, :polymorphic => true

  Read the article

• Problem with validating ModelForm

  - by user561640

  I use ModelForm to create my form. All works fine except 1 thing - validating the unique field. Code: class Article(models.Model): ... title = models.CharField(max_length=255, unique=True, error_messages={'max_length' : 'max translation', 'unique' : 'unique translation', 'required' : 'req translation',}) ... class ArticleForm(ModelForm): ... title = forms.CharField(max_length=255, min_length=3, error_messages={'required' : 'req translation', 'min_length' : 'min translation', 'max_length' : 'max translation', 'unique' : 'unique translation',}) But when I save my form with non-unique title I don't get my custom translated error but I get default error. How to fix it, that my unique field error is displayed?

  Read the article

• What's a good way to have sample data on the iPhone/iPad?

  - by MikeN

  I have an iPad application that pulls in all of its data from an external web service. I am working on building in a demo mode that will use a cache of demo data stored on the device so it can be demoed and tried out without the web service connection (or an internet connection.) Is there a project or good practices standard to follow to model this type of sample data? I'm expecting JSON arrays/Dictionaries back from my web service, how could I build a function that uses hardcoded data to create the NSMutableData object I'd expect to get back from a JSON web request?

  Read the article

• Office Application in Silverlight 4

  - by gery128

  Hi All, I am currently working on automation of Office 2007 application, which is in windows forms .NET 2.0 with Office Interop library. I would like to know, if can I use Silverlight 4 to make it web application and give users a full-fledged web-page where they can edit the document/excel sheet/presentation ? Also, would I be able to access Object Model just like I do in Windows Application? Because I want to check what changes have been done. Kindly suggest me the right path for this.

  Read the article

• What is the correct way to customize Icon and Text position of items in a QListView?

  - by petermcg

  I'm using C++ and Qt's (4.6) model/view framework and wondering what is the correct way to change the display of items in a QListView or a class derived from QListView from: to: I'm not concerned about the sort order or Flow, I'm interested in the best way to correctly position the text to the right of the icon. If this can only be done by writing a custom QStyledItemDelegate that's totally fine, I want to rule out whether this is the correct approach or whether it's best to look at setLayout or similar, example code would help. The example application I'm looking at is the 'interview' example from qtdemo which amongst other things displays icons and text in a QListView.

  Read the article

• How do I manipulate a tree of immutable objects?

  - by Frederik

  I'm building an entire application out of immutable objects so that multi-threading and undo become easier to implement. I'm using the Google Collections Library which provides immutable versions of Map, List, and Set. My application model looks like a tree: Scene is a top-level object that contains a reference to a root Node. Each Node can contain child Nodes and Ports. An object graph might look like this: Scene | +-- Node | +-- Node | +- Port +-- Node | +- Port +- Port If all of these objects are immutable, controlled by a top-level SceneController object: What is the best way to construct this hierarchy? How would I replace an object that is arbitrarily deep in the object tree? Is there a way to support back-links, e.g. a Node having a "parent" attribute?

  Read the article

• Own params to PeriodicTask run() method in Celery

  - by Alex Isayko

  Hello to all! I am writing a small Django application and I should be able to create for each model object its periodical task which will be executed with a certain interval. I'm use for this a Celery application, but i can't understand one thing: class ProcessQueryTask(PeriodicTask): run_every = timedelta(minutes=1) def run(self, query_task_pk, **kwargs): logging.info('Process celery task for QueryTask %d' % query_task_pk) task = QueryTask.objects.get(pk=query_task_pk) task.exec_task() return True Then i'm do following: >>> from tasks.tasks import ProcessQueryTask >>> result1 = ProcessQueryTask.delay(query_task_pk=1) >>> result2 = ProcessQueryTask.delay(query_task_pk=2) First call is success, but other periodical calls returning the error - TypeError: run() takes exactly 2 non-keyword arguments (1 given) in celeryd server. So, can i pass own params to PeriodicTask run() ? Thanks!

  Read the article

< Previous Page | 408 409 410 411 412 413 414 415 416 417 418 419  | Next Page >