Mogenerator and Xcode 4

Question

I just installed mogenerator+xmo'd on my development machine and would like to start playing with it. The only instructions I could really find online were from a previous SO post, and those don't work with XCode 4 (or at least ⌘I doesn't pull up metadata any more and I don't know how).

So to get things up and running, is all that needs to happen to add xmod in the .xcdatamodeld's comments (wherever they are) and the classes will be generated/updated on save from then on?

Answer 1

While trying to find this answer myself, I found MOGenerator and Xcode 4 integration guide on esenciadev.com. This solution is not a push-button integration, but it works. The link has detailed instructions, but generally you:

1. Copy the shell scripts into your project
2. Add build rules to your target to run the two shell scripts

When you build your project, the script runs MOGenerator on all .xcdatamodel files in your project directory. After the build, if the script generates new class files, you must manually add them to your project. Subsequent builds will remember existing MO-Generated files.

Caveats:

1. The example's build rule assumes you put the scripts into a /scripts/ file folder within your project directory. When I ignored this detail (creating a project folder but not a file folder) I got a build error. Make sure the build rule points to the script's file location.

2. The script uses the --base-class argument. Unless your model classes are subclasses of a custom class (not NSManagedObject), you must delete this argument from the script. E.g.,

mogenerator --model "${INPUT_FILE_PATH}/$curVer" --output-dir "${INPUT_FILE_DIR}/" --base-class $baseClass