edit | 易学教程

How can I change the TEdit default error message (NumbersOnly mode)?

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问题 How can I change the TEdit's default error message when I use it in NumbersOnly mode. I mean this error: Unacceptable character You can only type a number here Is it possible to change this message ? 回答1: I don't know a direct way to change the value of that message (which is handled by Windows) but you can show your own message and then avoid to show the original windows hint ballon, using the Abort procedure in the OnKeyPress Event. Check this sample procedure TForm1.Edit1KeyPress(Sender:

Rails 3 Devise manually change password

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问题 I try to usung devise in my rails app. But i don't understand how can i give user functionality to change his password. I need a form with fields "old password", "new password" and "new password confirmation". How can i do it? If i use default devise form on "/profile" page <%= render :template => 'devise/passwords/edit', :locals => { :resource => my_user_model_variable, :resource_name => my_user_model_name } %> In user.rb contain line attr_accessible :email, :password, :password_confirmation

Powershell - how edit existing property in custom object

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I looking for way how update noteproperty in existing psobject, for example I have system.array of psobjects ($a): Group Assigment ----- --------- Group1 Home Group2 Office Question is how update 'Home' to something other. $a | gm: TypeName: System.Management.Automation.PSCustomObject Name MemberType Definition ---- ---------- ---------- Equals Method bool Equals(System.Object obj) GetHashCode Method int GetHashCode() GetType Method type GetType() ToString Method string ToString() Assigment NoteProperty System.String Assigment=Office Group NoteProperty System.String Group=Group1 $a.GetType():

How to use dropdown list in Datatable in Inline editing

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问题 I am using datatable 1.8 its amazing, I have recently read an article regarding inline editing of datatable column, Inline editing , in this article on clicking on edit hyperlink the datatable columns becomes text field but my requirement is that i have to show a dropdown list, means on clicking on edit hyperlink it should get converted into dropdown list and should come from my database database, and on saving its values get stored into database. How to do this? Any help would be of great

How to edit file txt already created in C++

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I have know how to create export data to file txt,but If I already txt file, how to edit that file txt which don't apply to data have already exist.. This also mean add a new data line in a txt file already have data.. What you're looking for is std::ios_base::app which will append what you write to the file at the end. You can use fstream (#include < fstream >): // declare variable "file" std::fstream file; // open file named "data.txt" for writing (std::fstream::app lets you add text to the end of the file) file.open("data.txt", std::fstream::in | std::fstream::out | std::fstream::app); //

how to: creating a view and serializer for adding, editing, and deleting objects with foreign relationships django rest framework

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问题 I am having a very hard time connecting all the documentation on django and django rest framework on how to create a view and serializer that allows for a foreign key. edit: I might have an answer here: http://www.django-rest-framework.org/api-guide/relations/#writable-nested-serializers Example I have these models. class SearchCity(models.Model): city = models.CharField(max_length=200) class SearchNeighborhood(models.Model): city = models.ForeignKey(SearchCity, on_delete=models.CASCADE)

Editable Word Document from JSP

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问题 Is there a way to create a link in a JSP page to a Microsoft Word document that you can edit and have it post back automatically to the server? I'm using Websphere Portal. Thank you! 回答1: You could look into WebDAV. I believe Microsoft Word understands how to read and save documents from WebDAV servers. You would need to implement a WebDAV server for this to be possible but I'm sure there are a variety of open-source implementations available - a quick Google turns up this one which looks

Edit Django Formwizard: Getting Initial Data

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问题 I am trying to edit existing objects using my Django FormWizard. I am following the technique described in this blog post, but it does not work. Here is my edit view: @login_required def edit_wizard(request, id): thing = get_object_or_404(Thing, pk=id) if thing.user != request.user: raise HttpResponseForbidden() else: initial = {0: {'year': thing.year, 'make': thing.make, 'series': thing.series, ....etc. }, 1: {'condition': thing.condition, ....etc. }, } form = CreateWizard.as_view(

CakePHP How do you populate a field in an edit view with value associated with a foreign key?

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问题 Following this question (not essential for understanding) CakePHP hasOne-belongsTo relationship, how to look up and insert foreign key from user input? To add a property, the Property.postcode field is taken, used to find a matching Postcode.postcode, and then the Property.postcode_id (foreign key for postcode) is set for saving. Property.postcode is for user input only, it is not saved. To edit, the system should be the same - postcode entered is checked against the Postcode table records.

PHP - Edit/Delete particular line in a file

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问题 I have a file users.txt which contains: "ID" "Access" ;Expire>>26-08-2013<< "ID" "Access" ;Expire>>27-08-2013<< "ID" "Access" ;Expire>>28-08-2013<< I wan't to check if the Expire date is greater than current datetime, and if so I want to add a semicolon at the begin of that line or simply delete that line. The code i wrote so far for that is following: $files = file('users.txt'); foreach ($files as $line) { $pattern = '/>>(.*)<</'; preg_match($pattern, $line, $matches); $expiredate =