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Adding a column to an existing table in a Rails migration
...enerate a new migration (rails generate migration add_email_to_users email:string will do the trick).
It will create a migration file containing line:
add_column :users, email, string
Then do a rake db:migrate and it'll run the new migration, creating the new column.
If you have not yet run the ori...
uncaught syntaxerror unexpected token U JSON
...acter". I'm returning the json data from a php file and the returning json string is valid. I checked it with http://jsonlint.com/ . Any help would be appreciated... Thanks.
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What is the difference between '@' and '=' in directive scope in AngularJS?
...title1 or title="title1", the value of DOM attribute "title" is simply the string title1. If you use title="{{title}}", the value of the DOM attribute "title" is the interpolated value of {{title}}, hence the string will be whatever parent scope property "title" is currently set to. Since attribut...
How to do associative array/hashing in JavaScript
...ciative arrays.
Associative Array: In simple words associative arrays use Strings instead of Integer numbers as index.
Create an object with
var dictionary = {};
JavaScript allows you to add properties to objects by using the following syntax:
Object.yourProperty = value;
An alternate syntax f...
Replace all spaces in a string with '+' [duplicate]
I have a string that contains multiple spaces. I want to replace these with a plus symbol. I thought I could use
9 Answers...
Different bash prompt for different vi editing mode?
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Bash 4.4 / Readline 7.0 will add support for user-settable mode strings.
You can try the beta versions, but they seem a bit buggy at the moment. They also don't yet support specifying where in the prompt you want the mode indicator to occur (which I think is the killer feature).
If you ...
Why does a RegExp with global flag give wrong results?
...gorithm that the specs dictate (section 15.10.6.2):
RegExp.prototype.exec(string)
Performs
a regular expression match of string
against the regular expression and
returns an Array object containing the
results of the match, or null if the
string did not match The string
ToString(string) is searched...
Ensure that HttpConfiguration.EnsureInitialized()
...
My error was [Route("api/{parameter:string}")] instead of [Route("api/{parameter}")]. Apparently putting :string as type is wrong as it is the default.
– Jamby
May 25 '16 at 13:32
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In Java, how do I parse XML as a String instead of a file?
...my code base, this should work for you.
public static Document loadXMLFromString(String xml) throws Exception
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource is = new InputSource(new StringReade...
How do I get the collection of Model State Errors in ASP.NET MVC?
...
This will give you one string with all the errors with comma separating
string validationErrors = string.Join(",",
ModelState.Values.Where(E => E.Errors.Count > 0)
.SelectMany(E => E.Errors)
...