How can I get the sitecore field from a property of an object rendered with glassmapper?
We use the Glass Mapper with Sitecore, with our models we can get the values of the sitecore fields. But I want to easily get the sitecore fields (sitecore field type) using the model without hardcoding any strings (when using GetProperty()
, you need the property name string) into the method.
So, I wrote this thing to achieve this, however I am not happy with the need to pass 2 types when using it as it looks terrible when you have a long model ID.
public static string SitecoreFieldName<T, TU>(Expression<Func<TU>> expr)
{
var body = ((MemberExpression)expr.Body);
var attribute = (typeof(T).GetProperty(body.Member.Name).GetCustomAttributes(typeof(SitecoreFieldAttribute), false)[0]) as SitecoreFieldAttribute;
return attribute.FieldName;
}
The best way - to get it: Model.SomeProperty.SitecoreField()
. However, I cannot figure out how to do this. As it can be an extension to any type.
Thank!
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public static string SitecoreFieldName<TModel>(Expression<Func<TModel, object>> field)
{
var body = field.Body as MemberExpression;
if (body == null)
{
return null;
}
var attribute = typeof(TModel).GetProperty(body.Member.Name)
.GetCustomAttributes(typeof(SitecoreFieldAttribute), true)
.FirstOrDefault() as SitecoreFieldAttribute;
return attribute != null
? attribute.FieldName
: null;
}
Note that I put inherit=true
on the method call GetCustomAttributes
.
Otherwise, inherited attributes are ignored.
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I don't understand why my question went away - they voted. So you think this is the perfect code already?
With the help of another senior developer, I improved it today so it doesn't need two types and is clearer in the syntax of use:
public static Field GetSitecoreField<T>(T model, Expression<Func<T, object>> expression) where T : ModelBase
{
var body = ((MemberExpression)expression.Body);
var attributes = typeof(T).GetProperty(body.Member.Name).GetCustomAttributes(typeof(SitecoreFieldAttribute), false);
if (attributes.Any())
{
var attribute = attributes[0] as SitecoreFieldAttribute;
if (attribute != null)
{
return model.Item.Fields[attribute.FieldName];
}
}
return null;
}
and I can just call it by doing the following:
GetSitecoreField(Container.Model<SomeModel>(), x => x.anyField)
Hope this helps anyone using Glass Mapper with Sitecore and wants to get the current sitecore field from the model property.
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