Document System Tutorial Part 3 - Linking Models (Current Progress)
===================================================================
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.. _Back to Previous Page: https://uadmin-docs.readthedocs.io/en/latest/document_system/tutorial/part3.html

Structure:

* `models`_
    * `folder_group.go`_
    * `folder_user.go`_
    * `folder.go`_
* `main.go`_
* `uadmin.db`_
    * `Folders`_

models
------
**folder_group.go**
^^^^^^^^^^^^^^^^^^^
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.. code-block:: go

    package models

    import (
        "github.com/uadmin/uadmin"
    )

    // FolderGroup !
    type FolderGroup struct {
        uadmin.Model
        Group    uadmin.UserGroup
        GroupID  uint
        Folder   Folder
        FolderID uint
        Read     bool
        Add      bool
        Edit     bool
        Delete   bool
    }

    // FolderGroup function that returns string value
    func (f *FolderGroup) String() string {

        // Gives access to the fields in another model
        uadmin.Preload(f)

        // Returns the GroupName from the Group model
        return f.Group.GroupName
    }

**folder_user.go**
^^^^^^^^^^^^^^^^^^
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.. code-block:: go

    package models

    import (
        "github.com/uadmin/uadmin"
    )

    // FolderUser !
    type FolderUser struct {
        uadmin.Model
        User     uadmin.User
        UserID   uint
        Folder   Folder
        FolderID uint
        Read     bool
        Add      bool
        Edit     bool
        Delete   bool
    }

    // FolderUser function that returns string value
    func (f *FolderUser) String() string {

        // Gives access to the fields in another model
        uadmin.Preload(f)

        // Returns the full name from the User model
        return f.User.String()
    }

**folder.go**
^^^^^^^^^^^^^
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.. code-block:: go

    package models

    import (
        "github.com/uadmin/uadmin"
    )

    // Folder !
    type Folder struct {
        uadmin.Model
        Name     string
        Parent   *Folder
        ParentID uint
    }

main.go
-------
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.. code-block:: go

    package main

    import (
        // Specify the username that you used inside github.com folder
        "github.com/username/document_system/models"
        "github.com/uadmin/uadmin"
    )

    func main() {
        // Register models to uAdmin
        uadmin.Register(
            models.Folder{},
            models.FolderGroup{},
            models.FolderUser{},
        )

        // Assign Site Name value as "Document System"
        // NOTE: This code works only if database does not exist yet.
        uadmin.SiteName = "Document System"

        // Activates a uAdmin server
        uadmin.StartServer()
    }

uadmin.db
---------
**Folders**
^^^^^^^^^^^
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.. _Back To Top: https://uadmin-docs.readthedocs.io/en/latest/document_system/tutorial/full_code/part3.html#document-system-tutorial-part-3-linking-models-current-progress

.. image:: assets/foldermodelupdate.png