Project code support (#4636)

* Support image uploads in the "notes" markdown fields

- Implemented using the existing EasyMDE library
- Copy / paste support
- Drag / drop support

* Remove debug message

* Updated API version

* Better UX when saving notes

* Pin PIP version (for testing)

* Bug fixes

- Fix typo
- Use correct serializer type

* Add unit testing

* Update role permissions

* Typo fix

* Update migration file

* Adds a notes mixin class to be used for refactoring

* Refactor existing models with notes to use the new mixin

* Add helper function for finding all model types with a certain mixin

* Refactor barcode plugin to use new method

* Typo fix

* Add daily task to delete old / unused notes

* Add ProjectCode model

(cherry picked from commit 382a0a2fc32c930d46ed3fe0c6d2cae654c2209d)

* Adds IsStaffOrReadyOnly permissions

- Authenticated users get read-only access
- Staff users get read/write access

(cherry picked from commit 53d04da86c4c866fd9c909d147d93844186470b4)

* Adds API endpoints for project codes

(cherry picked from commit 5ae1da23b2eae4e1168bc6fe28a3544dedc4a1b4)

* Add migration file for projectcode model

(cherry picked from commit 5f8717712c65df853ea69907d33e185fd91df7ee)

* Add project code configuration page to the global settings view

* Add 'project code' field to orders

* Add ability to set / edit the project code for various order models

* Add project code info to order list tables

* Add configuration options for project code integration

* Allow orders to be filtered by project code

* Refactor table_filters.js

- Allow orders to be filtered dynamically by project code

* Bump API version

* Fixes

* Add resource mixin for exporting project code in order list

* Add "has_project_code" filter

* javascript fix

* Edit / delete project codes via API

- Also refactor some existing JS

* Move MetadataMixin to InvenTree.models

To prevent circular imports

(cherry picked from commit d23b013881eaffe612dfbfcdfc5dff6d729068c6)

* Fixes for circular imports

* Add metadata for ProjectCode model

* Add Metadata API endpoint for ProjectCode

* Add unit testing for ProjectCode API endpoints

InvenTree/plugin/models.py

@@ -12,60 +12,6 @@ import common.models
 from plugin import InvenTreePlugin, registry
 
 
-class MetadataMixin(models.Model):
-    """Model mixin class which adds a JSON metadata field to a model, for use by any (and all) plugins.
-
-    The intent of this mixin is to provide a metadata field on a model instance,
-    for plugins to read / modify as required, to store any extra information.
-
-    The assumptions for models implementing this mixin are:
-
-    - The internal InvenTree business logic will make no use of this field
-    - Multiple plugins may read / write to this metadata field, and not assume they have sole rights
-    """
-
-    class Meta:
-        """Meta for MetadataMixin."""
-        abstract = True
-
-    metadata = models.JSONField(
-        blank=True, null=True,
-        verbose_name=_('Plugin Metadata'),
-        help_text=_('JSON metadata field, for use by external plugins'),
-    )
-
-    def get_metadata(self, key: str, backup_value=None):
-        """Finds metadata for this model instance, using the provided key for lookup.
-
-        Args:
-            key: String key for requesting metadata. e.g. if a plugin is accessing the metadata, the plugin slug should be used
-
-        Returns:
-            Python dict object containing requested metadata. If no matching metadata is found, returns None
-        """
-        if self.metadata is None:
-            return backup_value
-
-        return self.metadata.get(key, backup_value)
-
-    def set_metadata(self, key: str, data, commit: bool = True):
-        """Save the provided metadata under the provided key.
-
-        Args:
-            key (str): Key for saving metadata
-            data (Any): Data object to save - must be able to be rendered as a JSON string
-            commit (bool, optional): If true, existing metadata with the provided key will be overwritten. If false, a merge will be attempted. Defaults to True.
-        """
-        if self.metadata is None:
-            # Handle a null field value
-            self.metadata = {}
-
-        self.metadata[key] = data
-
-        if commit:
-            self.save()
-
-
 class PluginConfig(models.Model):
     """A PluginConfig object holds settings for plugins.