mirror of
https://github.com/vale981/Vulcan
synced 2025-03-10 12:36:39 -04:00
257 lines
No EOL
8.5 KiB
JavaScript
257 lines
No EOL
8.5 KiB
JavaScript
/*
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Mutations have four steps:
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1. Validation
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If the mutation call is not trusted (i.e. it comes from a GraphQL mutation),
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we'll run all validate steps:
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- Check that the current user has permission to insert/edit each field.
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- Add userId to document (insert only).
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- Run validation callbacks.
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2. Sync Callbacks
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The second step is to run the mutation argument through all the sync callbacks.
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3. Operation
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We then perform the insert/update/remove operation.
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4. Async Callbacks
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Finally, *after* the operation is performed, we execute any async callbacks.
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Being async, they won't hold up the mutation and slow down its response time
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to the client.
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*/
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import { runCallbacks, runCallbacksAsync } from '../modules/index.js';
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import { createError } from 'apollo-errors';
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import { validateDocument, validateModifier } from '../modules/validation.js';
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import { registerSetting } from '../modules/settings.js';
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import { debug } from '../modules/debug.js';
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import { Connectors } from './connectors.js';
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registerSetting('database', 'mongo', 'Which database to use for your back-end');
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export const newMutation = async ({ collection, document, currentUser, validate, context }) => {
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debug('//------------------------------------//');
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debug('// newMutation');
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debug(collection._name);
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debug(`validate: ${validate}`);
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debug(document);
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// we don't want to modify the original document
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let newDocument = Object.assign({}, document);
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const collectionName = collection._name;
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const schema = collection.simpleSchema()._schema;
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if (validate) {
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const validationErrors = validateDocument(newDocument, collection, context);
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// run validation callbacks
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newDocument = runCallbacks(`${collectionName}.new.validate`, newDocument, currentUser, validationErrors);
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if (validationErrors.length) {
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const NewDocumentValidationError = createError('app.validation_error', {message: 'app.new_document_validation_error'});
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throw new NewDocumentValidationError({data: {break: true, errors: validationErrors}});
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}
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}
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// if user is logged in, check if userId field is in the schema and add it to document if needed
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if (currentUser) {
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const userIdInSchema = Object.keys(schema).find(key => key === 'userId');
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if (!!userIdInSchema && !newDocument.userId) newDocument.userId = currentUser._id;
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}
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// run onInsert step
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// note: cannot use forEach with async/await.
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// See https://stackoverflow.com/a/37576787/649299
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for(let fieldName of _.keys(schema)) {
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if (schema[fieldName].onInsert) {
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const autoValue = await schema[fieldName].onInsert(newDocument, currentUser);
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if (typeof autoValue !== 'undefined') {
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newDocument[fieldName] = autoValue;
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}
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}
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}
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// TODO: find that info in GraphQL mutations
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// if (Meteor.isServer && this.connection) {
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// post.userIP = this.connection.clientAddress;
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// post.userAgent = this.connection.httpHeaders['user-agent'];
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// }
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// run sync callbacks
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newDocument = await runCallbacks(`${collectionName}.new.before`, newDocument, currentUser);
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newDocument = await runCallbacks(`${collectionName}.new.sync`, newDocument, currentUser);
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// add _id to document
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newDocument._id = await Connectors.create(collection, newDocument);
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// run any post-operation sync callbacks
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newDocument = await runCallbacks(`${collectionName}.new.after`, newDocument, currentUser);
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// get fresh copy of document from db
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// TODO: not needed?
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const insertedDocument = await Connectors.get(collection, newDocument._id);
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// run async callbacks
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// note: query for document to get fresh document with collection-hooks effects applied
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await runCallbacksAsync(`${collectionName}.new.async`, insertedDocument, currentUser, collection);
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debug('// new mutation finished:');
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debug(newDocument);
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debug('//------------------------------------//');
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return newDocument;
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}
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export const editMutation = async ({ collection, documentId, set = {}, unset = {}, currentUser, validate, context }) => {
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const collectionName = collection._name;
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const schema = collection.simpleSchema()._schema;
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// build mongo modifier from arguments
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let modifier = {$set: set, $unset: unset};
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// get original document from database
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// TODO: avoid fetching document a second time if possible
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let document = await Connectors.get(collection, documentId);
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debug('//------------------------------------//');
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debug('// editMutation');
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debug('// collectionName: ', collection._name);
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debug('// documentId: ', documentId);
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debug('// set: ', set);
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debug('// unset: ', unset);
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debug('// document: ', document);
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if (validate) {
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const validationErrors = validateModifier(modifier, document, collection, context);
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modifier = runCallbacks(`${collectionName}.edit.validate`, modifier, document, currentUser, validationErrors);
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if (validationErrors.length) {
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// eslint-disable-next-line no-console
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console.log('// validationErrors');
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// eslint-disable-next-line no-console
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console.log(validationErrors);
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const EditDocumentValidationError = createError('app.validation_error', {message: 'app.edit_document_validation_error'});
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throw new EditDocumentValidationError({data: {break: true, errors: validationErrors}});
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}
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}
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// get a "preview" of the new document
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let newDocument = { ...document, ...modifier.$set};
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Object.keys(modifier.$unset).forEach(fieldName => {
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delete newDocument[fieldName];
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});
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// run onEdit step
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for(let fieldName of _.keys(schema)) {
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if (schema[fieldName].onEdit) {
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const autoValue = await schema[fieldName].onEdit(modifier, document, currentUser, newDocument);
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if (typeof autoValue !== 'undefined') {
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if (autoValue === null) {
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// if any autoValue returns null, then unset the field
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modifier.$unset[fieldName] = true;
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} else {
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modifier.$set[fieldName] = autoValue;
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// make sure we don't try to unset the same field at the same time
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delete modifier.$unset[fieldName];
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}
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}
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}
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}
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// run sync callbacks (on mongo modifier)
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modifier = await runCallbacks(`${collectionName}.edit.before`, modifier, document, currentUser, newDocument);
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modifier = await runCallbacks(`${collectionName}.edit.sync`, modifier, document, currentUser, newDocument);
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// remove empty modifiers
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if (_.isEmpty(modifier.$set)) {
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delete modifier.$set;
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}
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if (_.isEmpty(modifier.$unset)) {
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delete modifier.$unset;
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}
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// update document
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await Connectors.update(collection, documentId, modifier, {removeEmptyStrings: false});
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// get fresh copy of document from db
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newDocument = await Connectors.get(collection, documentId);
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// clear cache if needed
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if (collection.loader) {
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collection.loader.clear(documentId);
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}
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// run any post-operation sync callbacks
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newDocument = await runCallbacks(`${collectionName}.edit.after`, newDocument, document, currentUser);
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// run async callbacks
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await runCallbacksAsync(`${collectionName}.edit.async`, newDocument, document, currentUser, collection);
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debug('// edit mutation finished')
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debug('// modifier: ', modifier)
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debug('// edited document: ', newDocument)
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debug('//------------------------------------//');
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return newDocument;
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}
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export const removeMutation = async ({ collection, documentId, currentUser, validate, context }) => {
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debug('//------------------------------------//');
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debug('// removeMutation')
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debug(collection._name)
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debug(documentId)
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debug('//------------------------------------//');
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const collectionName = collection._name;
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const schema = collection.simpleSchema()._schema;
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let document = await Connectors.get(collection, documentId);
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// if document is not trusted, run validation callbacks
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if (validate) {
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document = runCallbacks(`${collectionName}.remove.validate`, document, currentUser);
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}
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// run onRemove step
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for(let fieldName of _.keys(schema)) {
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if (schema[fieldName].onRemove) {
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await schema[fieldName].onRemove(document, currentUser);
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}
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}
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await runCallbacks(`${collectionName}.remove.before`, document, currentUser);
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await runCallbacks(`${collectionName}.remove.sync`, document, currentUser);
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await Connectors.delete(collection, documentId);
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// clear cache if needed
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if (collection.loader) {
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collection.loader.clear(documentId);
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}
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await runCallbacksAsync(`${collectionName}.remove.async`, document, currentUser, collection);
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return document;
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}
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export const newMutator = newMutation;
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export const editMutator = editMutation;
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export const removeMutator = removeMutation; |