Struct RelationshipField 

pub struct RelationshipField {
    pub name: String,
    pub target_type: String,
    pub is_list: bool,
    pub relationship: Relationship,
    pub description: Option<String>,
    pub arguments: Vec<(String, String, bool)>,
}

Represents a GraphQL field derived from a database relationship.

Fields

name: String

Field name (derived from foreign table name).

target_type: String

Target GraphQL type name.

is_list: bool

Whether this returns a list (O2M, M2M) or single object (M2O, O2O).

relationship: Relationship

The original relationship.

description: Option<String>

Description for the field.

arguments: Vec<(String, String, bool)>

The arguments a computed relationship’s function takes from the caller, as (name, PostgreSQL type, required).

Neither the parent row nor the session is among them: the first is what makes it a relationship and the second is the server’s to supply. Empty for every relationship reached by a key.

Implementations

impl RelationshipField

pub fn from_relationship(rel: &Relationship) -> Self

Create a GraphQL field from a database relationship.

pub fn from_relationship_named( rel: &Relationship, target_base_name: &str, given_name: Option<&str>, ) -> Self

Create a GraphQL field using an explicit base name for the target.

The base name must match the one the target table’s object type was generated with, otherwise the field would reference a type that was never registered.

pub fn type_string(&self) -> String

Get the GraphQL type string.

pub fn join_columns(&self) -> Vec<(String, String)>

Get the join columns for this relationship.

Trait Implementations

impl Clone for RelationshipField

fn clone(&self) -> RelationshipField

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RelationshipField

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.