crud

How can I delete nested array element in a mongodb document with the c# driver

喜夏-厌秋 提交于 2019-12-03 14:37:31
I am new in the Mongodb world and now I am struggling of how can I delete, update element in a nested array field of a document. Here is my samle document: { "_id" : ObjectId("55f354533dd61e5004ca5208"), "Name" : "Hand made products for real!", "Description" : "Products all made by hand", "Products" : [ { "Identifier" : "170220151653", "Price" : 20.5, "Name" : "Leather bracelet", "Description" : "The bracelet was made by hand", "ImageUrl" : "https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQii6JCvXtx0iJGWgpvSl-KrdZONKYzDwS0U8uDvUunjO6BO9Aj" } ] } In my method I get the id of the document

Simple CRUD Generation

断了今生、忘了曾经 提交于 2019-12-03 14:35:01
This is what I have: An entity-relational schema, modelled for Doctrine 2.0 (in PHP); The generated database, on a MySQL server. This is what I want: A very basic CRUD web-interface to the database, that allows me to (you guessed it!) create, read, update and delete records, with extra credit for implementing CRUD operations on entities and relations instead of records. Now, I'm terrible at writing web applications myself (read: I'm lazy). Are there any options to generate a CRUD web application from a MySQL database, or from a set of Doctrine entities? I'd be willing to stop using PHP (and

Why use Attach for update Entity Framework 6?

那年仲夏 提交于 2019-12-03 11:54:31
While searching for the best practivies of performing CRUD operation via EF I noticed that it is highly recommended to use Attach() or Find() methods before updating an entity. It works well and according to EF documentation these methods fetch the entity to context that is quite clear for me. But the followind code confused me pretty much public void Update(object entity) { Record record = new Record() { id = 1, value = 5 }; using (SomeContext ctx = new SomeContext()) { ctx.Entry(record).State = EntityState.Modified; ctx.SaveChanges(); } } Assume we have a record with id = 1 in database. On

Is there a tool or framework to Generate a CRUD UI in Swing?

流过昼夜 提交于 2019-12-03 11:30:06
I am looking for a tool/framework to (automatically) generate a Swing user interface to perform CRUD operations on an underlying database. I would also like to configure the database fields that should be exposed. Something like django (via modelforms ) or ruby on rails features, but in a Java desktop environment. NetBeans does seem like an obvious answer. These guys make a NetBeans plugin that does just that: http://www.morelisland.com/java_services/netbeans_tutorial/midbmetadata_se.htm I've heard jgoodies does something similar: http://www.jgoodies.com/products/index.html And more

REST Best Practices: Should you return an entity on POST and PUT calls?

爱⌒轻易说出口 提交于 2019-12-03 10:07:33
In order to respect the best practices of the REST principles, is it best to return the created/updated entity upon a POST/PUT ? Or return an empty HTTP body with the Location header? More precisely, When a resource is created by a POST, should we return: Status 201 + Location header + (the created entity in the HTTP body) ? or Status 201 + Location header + (empty body) ? When a resource is updated by a PUT, should we return: Status 200 + (the updated entity in the HTTP body) ? or Status 204 (empty body) ? It might be beneficial to study the API's of other folks to see how they do it. Most of

Updating database record using Entity Framework (lazy loading and virtual properties)

拈花ヽ惹草 提交于 2019-12-03 09:11:55
I'm struggling with updating existing lecturer's data in database. Every lecturer has Name , AcademicDegree and Courses which are taught by him/her ( Courses==Lessons ). In fact there are more properties in class Lecturer but they are not relevant. For simplicity lets assume that POCO class is defined this way: // POCO class (Entity Framework Reverse Engineering Code First) public class Lecturer { public Lecturer() { this.Courses = new List<Course>(); } public int Id_Lecturer { get; set; } // Primary Key public string Name { get; set; } public int? Academic_Degree_Id { get; set; } public

Is my ASP.NET MVC application structured properly?

旧巷老猫 提交于 2019-12-03 08:48:00
问题 I've been going through the tutorials (specifically ones using Linq-To-Entities) and I understand the basic concepts, however some things are giving me issues. The tutorials usually involve only simple models and forms that only utilize basic create, update and delete statements. Mine are a little more complicated, and I'm not sure I'm going about this the right way because when it comes time to handle the relationships of a half dozen database objects, the tutorials stop helping. For the

WPF A good way to make a view/edit control?

房东的猫 提交于 2019-12-03 08:06:32
this is just a question to discuss - what is the best way to make a view/edit control in WPF? E.g. we have an entity object Person, that has some props (name, surname, address, phone etc.). One presentation of the control would be a read-only view. And the other would have the edit view for this same person. Example: <UserControl x:Name="MyPersonEditor"> <Grid> <Grid x:Name="ViewGrid" Visibility="Visible"> <TextBlock Text="Name:"/> <TextBlock Text="{Binding Person.Name}"/> <Button Content="Edit" Click="ButtonEditStart_Click"/> </Grid> <Grid x:Name="EditGrid" Visibility="Collapsed"> <TextBlock

Rails - Update a single attribute : link with custom action or form with hidden fields?

馋奶兔 提交于 2019-12-03 02:44:33
问题 Let's say I have a User model, with a facebook_uid field corresponding to the user's facebook id. I want to allow the user to unlink his facebook account. Do do so, I need to set this attribute to nil. I currently see 2 ways of doing this First way : create a custom action and link to it # app/controllers/users_controller.rb def unlink_facebook_account @user = User.find params[:id] # Authorization checks go here @user.facebook_uid = nil @user.save # Redirection go here end # config/routes.rb

What is scaffolding? Is it a term for a particular platform?

流过昼夜 提交于 2019-12-03 00:18:53
问题 Scaffolding, what is it? Is it a Rails-only thing? 回答1: Scaffolding generally refers to a quickly set up skeleton for an app. It's not rails-only since other platforms have it as well. It's also not generally meant to be a "final" system; merely the first, smallest way to do it. 回答2: From Wikipedia: Scaffolding is a meta-programming method of building database-backed software applications. It is a technique supported by some model-view-controller frameworks, in which the programmer may write