ExtJS 4 Form: Unique Field Value Validation Example (Server Validation)
Today’s example is an ExtJS 4 Form unique field value validation, done on the server side. Do you know when you are going to register in a new social network and you have to choose a username (and this username must be unique)? This is the case we are going to handle in this article.
I also implemented this example using Sencha Architect 2.
Final result:
Demo: http://loiane.com.br/sencha-extjs4-examples-architect/extras/UniqueFieldValidation/app.html
Source Code: https://github.com/loiane/sencha-extjs4-examples-architect/tree/master/extras/UniqueFieldValidation
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