You can achieve this using a type constructor and something called a “Phantom Type” (read a nice article about this here) which is a technique to ensure that a type can not be assigned to a value directly. Here’s an example of a StringOfLength<Min,Max> type using these techniques: type StringOfLength<Min, Max> = string & { … Read more
I guess this behaviour is not covered in the documentation well. The problem is caused by the following: By default, @InitBinder-annotated method is called for each non-primitive model attribute, both incoming and outcoming (the purpose of calling it for outcoming attibutes is to allow you to register custom PropertyEditors, which are used by form tags … Read more
After searching a lot for this I’ve found that we can trigger validation simply by calling $validate() on the desired field. So for example if your form is named my_form (i.e. in the markup the form tag has a name=”my_form” attribute) and the name of the field you want to validate is date (in the … Read more
The character set that is used does not allow for diacritics. In brief, it only allows uppercase ASCII characters. The restriction ultimately comes from the historical way in which banking cards encode data onto the magnetic stripe (as defined in ISO 7811). The data is encoded in a 7 bits per character format known as … Read more
You can use PathGetCharType function, PathCleanupSpec function or the following trick: function IsValidFilePath(const FileName: String): Boolean; var S: String; I: Integer; begin Result := False; S := FileName; repeat I := LastDelimiter(‘\/’, S); MoveFile(nil, PChar(S)); if (GetLastError = ERROR_ALREADY_EXISTS) or ( (GetFileAttributes(PChar(Copy(S, I + 1, MaxInt))) = INVALID_FILE_ATTRIBUTES) and (GetLastError=ERROR_INVALID_NAME) ) then Exit; if I>0 … Read more
In case you aren’t using ajax, or are still on JSF 1.x, and you really need to invoke a business action in cancel() method (i.e. just reloading the page is insufficient), then your best bet is to add immediate=”true” to the button. This way all input fields which don’t have immediate=”true” will be skipped in … Read more
Mongoose 5.x https://mongoosejs.com/docs/migrating_to_5.html#array-required tags: { type: [String], validate: v => Array.isArray(v) && v.length > 0, } Mongoose 4.x One-liner would be: tags: {type: [String], required: true} SchemaTypes
This happens because you’re re-defining renderField as a new component every time you render which means it looks like a new component to React so it’ll unmount the original one and re-mounts the new one. You’ll need to hoist it up: const renderField = ({ input, label, type, meta: { touched, invalid, error } }) … Read more
You need to replace (remove) the dots first in the thousands separator, then take care of the decimal: function isNumber(n) { ‘use strict’; n = n.replace(/\./g, ”).replace(‘,’, ‘.’); return !isNaN(parseFloat(n)) && isFinite(n); }
You can specify the StringLength attribute as follows on numerous properties [StringLength(20, ErrorMessageResourceName = “StringLengthMessage”, ErrorMessageResourceType = typeof(Resource))] public string OfficePhone { get; set; } [StringLength(20, ErrorMessageResourceName = “StringLengthMessage”, ErrorMessageResourceType = typeof(Resource))] public string CellPhone { get; set; } and add the string resource (named StringLengthMessage) in your resource file “Maximum length is {1}” Message … Read more