Question

i have a code like this on grails mongodb

//myDomain
class Plugin {
    List<String> projects = []
    //projects has name and description
}

//myController
def query = null
    if (params.q != null)
    {
        def q = '%'+ params.q +'%'
        query = Plugin.where {
            (projects.name =~ q || projects.name ==~ q)
        }
    }
//return null

why i can’t find plugin by projects.name?

Answer 1

From the property definition

List<String> projects = []

the elements of projects are Strings, that’s why you can not query projects.name, which is not known to GORM.

And in your last comment, the value in a projects instance "projects": { "0": { "description": "123", "name": "cms" }, "1": { "description": "cms", "name": "codebucks" } } looks like a Map, where the project number is the key and a inner map containing name and description is the value, rather than a List.

To serve your purpose, you need to modify your domain class definition to ensure consistency between your model and data.