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POMVC non constant for attribute argument to sync with Membership properties
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  1. POMVC non constant for attribute argument to sync with Membership properties
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    copied!<p>First off, I'm fairly new to MVC but have an existing project in MVC3 and playing around with MVC4 so answers for both versions are appreciated.</p> <p>In my mvc View I have this line:</p> <pre><code>Passwords must be at least @Membership.MinRequiredPasswordLength characters long. </code></pre> <p>and in the Model I have this:</p> <pre><code>[Required] [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)] [DataType(DataType.Password)] [Display(Name = "Password")] public string Password { get; set; } </code></pre> <p>(These were auto generated for an MVC template project)</p> <p>My web.config MembershipProvider has this attribute:</p> <pre><code>minRequiredPasswordLength="8" </code></pre> <p>The problem with this is that the user will be informed that the min length is 8 but the actual validation will be 6. Naturally, I can set both to the same value but I wanted to know if there is an easy way to only make use of one of them or syncing both.</p> <p>I've tried this:</p> <pre><code>[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = Membership.MinRequiredPasswordLength)] </code></pre> <p>but get the error 'An attribute argument must be a constant expression,...'</p> <p>I am aware of the option of writing custom validation attributes but I would like to avoid this because I would essentially be writing validation logic that already exists (with the exception of the source of the values)</p> <p>Alternatively, can I display what the MinimumLenght of the model is in the view?</p> <p>How can I have only one place to make a change?</p>
 

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