使用python将详细信息组件放置在Revit中

Question

I'm trying to create detail component buttons that run the following code. However, I need it to work for 2015-2018 possibly 2019 in the future.

Currently I have the custom ribbon and buttons made, but I can't get this script to work due to commandData in the first line not working. I've tried testing this as a macro just to try and see if it will work first before continuing.

FamilySymbol symbol = GetElements<FamilySymbol> (commandData.Application.ActiveUIDocument.Document)
                          .Where(item => item.Name == "NameYouWant")
                          .First();
commandData.Application.ActiveUIDocument.PromptForFamilyInstancePlacement(symbol);
    /// <summary>
    /// Get the collection of elements of the specified type.
    /// <para>The specified type must derive from Element, or you can use Element but you get everything :)</para>
    /// </summary>
    /// <typeparam name="T">The type of element to get</typeparam>
    /// <returns>The list of elements of the specified type</returns>
    public IEnumerable<T> GetElements<T>(Document document) where T : Element
    {
        FilteredElementCollector collector = new FilteredElementCollector(document);
        collector.OfClass(typeof(T));
        return collector.Cast<T>();
    }

It's located in the Detail Items in the project browser

Family = Break Line
Type   = Break Line

Any help will be greatly appreciated!

Answer 1

The commandData argument is a parameter passed into the Execute method of an external command by Revit. It includes data enabling the external command to get in touch with Revit and its database.

A macro provides a different method to access Revit and its database.

Work through the Revit API getting started material or the Revit developer guide hello world walkthroughs to see how to set up an external command to get the commandData passed in as required.