Struct InlineFormSet 

pub struct InlineFormSet<P: FormModel, C: FormModel> { /* private fields */ }

InlineFormSet for managing forms related to a parent model

InlineFormSets are used to edit related objects together with a parent object, similar to Django’s inline formsets for admin.

Implementations

impl<P: FormModel, C: FormModel> InlineFormSet<P, C>

pub fn new(parent: P, fk_field: String) -> Self

Create a new InlineFormSet

Arguments

• parent - The parent model instance
• fk_field - The foreign key field name on the child model

Examples

let parent = Author { id: 1, name: "John".to_string() };
let formset = InlineFormSet::new(parent, "author_id".to_string());

pub fn add_child_form(&mut self, form: ModelForm<C>)

Add a child form to the formset

pub fn parent(&self) -> &P

Get the parent model instance

pub fn fk_field(&self) -> &str

Get the foreign key field name

pub fn child_forms(&self) -> &[ModelForm<C>]

Get all child forms

pub fn save(&mut self) -> Result<(), FormError>

Save the formset and all related child instances.

This method saves the parent model first, retrieves the parent’s primary key, sets the foreign key on each child instance, then saves each child.

Errors

Returns an error if any save operation fails or if the parent model does not have an id field after saving.

pub fn is_valid(&mut self) -> bool

Validate all child forms