Dynamic form elements using attrs
by Daniel Reis, Alexandre Fayolle, Holger Brunn
Odoo Development Cookbook
- Odoo Development Cookbook
- Table of Contents
- Odoo Development Cookbook
- Credits
- About the Authors
- About the Reviewers
- www.PacktPub.com
- Preface
- 1. Installing the Odoo Development Environment
- 2. Managing Odoo Server Instances
- 3. Creating Odoo Modules
- 4. Application Models
- Introduction
- Defining the Model representation and order
- Adding data fields to a model
- Using a float field with configurable precision
- Adding a monetary field to a Model
- Adding relational fields to a Model
- Adding a hierarchy to a Model
- Adding constraint validations to a Model
- Adding computed fields to a Model
- Exposing Related fields stored in other models
- Adding dynamic relations using Reference fields
- Adding features to a Model using inheritance
- Using Abstract Models for reusable Model features
- Using Delegation inheritance to copy features to another Model
- 5. Basic Server Side Development
- Introduction
- Defining model methods and use the API decorators
- Reporting errors to the user
- Obtaining an empty recordset for a different model
- Creating new records
- Updating values of recordset records
- Searching for records
- Combining recordsets
- Filtering recordsets
- Traversing recordset relations
- Extending the business logic defined in a Model
- Extending write() and create()
- Customizing how records are searched
- 6. Advanced Server Side Development Techniques
- 7. Debugging and Automated Testing
- Introduction
- Producing server logs to help debug methods
- Using the Odoo shell to interactively call methods
- Using the Python debugger to trace method execution
- Writing tests for your module using YAML
- Writing tests for your module using Python unit tests
- Running server tests
- Using the Odoo Community Association maintainer quality tools
- 8. Backend Views
- Introduction
- Adding a menu item and window action
- Having an action open a specific view
- Adding content and widgets to a form view
- Adding buttons to forms
- Passing parameters to forms and actions: Context
- Defining filters on record lists: Domain
- List views
- Search views
- Changing existing views: View inheritance
- Document-style forms
- Dynamic form elements using attrs
- Embedded views
- Kanban views
- Show kanban cards in columns according to their state
- Calendar views
- Graph and pivot views
- QWeb reports
- 9. Module Data
- 10. Access Security
- 11. Internationalization
- 12. Automation and Workflows
- 13. Web Server Development
- 14. CMS Website Development
- 15. Web Client Development
- 16. Server Deployment
- Index
So far, we have only looked into changing forms depending on the user's groups (the groups attribute on elements and the groups_id field on inherited views), but nothing more. This recipe will show you how to change forms based on the content of some fields in it.
- Define an attribute attrs on some form element:
<field name="parent_id" attrs="{'invisible': [('is_company', '=', True)], 'required': [('is_company', '=', False)]}" /> - Take care that all the fields you refer to are available on your form:
<field name="is_company" invisible="True" />
This will make the field parent_id invisible if the partner is a company, and required if it's not a company.
The attrs attribute contains a dictionary with the keys invisible, required, and readonly (all of them optional). The values are domains that may refer to the fields existing on the form (and really only those, so no dotted paths), and the whole dictionary is evaluated according to the rules for client side Python described earlier. So for example, you can access the context in the right hand operand.
While this mechanism is quite straightforward for the scalar fields, it's less obvious how to handle the one2many and many2many fields. In fact, in standard Odoo you can't do much with those fields within an attrs attribute. But if you only need to check if such a field is empty or not, use [[6, False, []]] as your right hand operand.
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