payload/dist/collections/config/useAsTitle.js

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import { InvalidConfiguration } from '../../errors/InvalidConfiguration.js';
import { fieldAffectsData, fieldIsVirtual } from '../../fields/config/types.js';
import flattenFields from '../../utilities/flattenTopLevelFields.js';
/**
 * Validate useAsTitle for collections.
 */ export const validateUseAsTitle = (config)=>{
    if (config.admin?.useAsTitle?.includes('.')) {
        throw new InvalidConfiguration(`"useAsTitle" cannot be a nested field. Please specify a top-level field in the collection "${config.slug}"`);
    }
    if (config?.admin && config.admin?.useAsTitle && config.admin.useAsTitle !== 'id') {
        const fields = flattenFields(config.fields);
        const useAsTitleField = fields.find((field)=>{
            if (fieldAffectsData(field) && config.admin) {
                return field.name === config.admin.useAsTitle;
            }
            return false;
        });
        // If auth is enabled then we don't need to
        if (config.auth) {
            if (config.admin.useAsTitle !== 'email') {
                if (!useAsTitleField) {
                    throw new InvalidConfiguration(`The field "${config.admin.useAsTitle}" specified in "admin.useAsTitle" does not exist in the collection "${config.slug}"`);
                }
            }
        } else {
            if (useAsTitleField && fieldIsVirtual(useAsTitleField)) {
                throw new InvalidConfiguration(`The field "${config.admin.useAsTitle}" specified in "admin.useAsTitle" in the collection "${config.slug}" is virtual. A virtual field cannot be used as the title.`);
            }
            if (!useAsTitleField) {
                throw new InvalidConfiguration(`The field "${config.admin.useAsTitle}" specified in "admin.useAsTitle" does not exist in the collection "${config.slug}"`);
            }
        }
    }
};

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