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Refactor PostsCategoryParameter callback to use readQuery and runQuery

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This commit is contained in:
SachaG 2017-09-22 16:20:52 +02:00
parent c52e53afbe
commit c610ab4f10
1 changed files with 33 additions and 26 deletions
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59
packages/example-forum/lib/modules/categories/parameters.js
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@ -4,47 +4,54 @@ Categories parameter
*/
import Categories from './index.js';
import { addCallback, getSetting, registerSetting } from 'meteor/vulcan:core';
import { getCategories } from './schema.js';
import { addCallback, getSetting, registerSetting, getFragment, runQuery } from 'meteor/vulcan:core';
import gql from 'graphql-tag';
registerSetting('forum.categoriesFilter', 'union', 'Display posts belonging to all (“intersection”) or at least one of (“union”) the selected categories');
// Category Posts Parameters
// Add a 'categories' property to terms which can be used to filter *all* existing Posts views.
function PostsCategoryParameter(parameters, terms, apolloClient) {
async function PostsCategoryParameter(parameters, terms, apolloClient) {
// get category slugs
const cat = terms.cat || terms['cat[]'];
// filter by category if category slugs are provided
if (cat) {
const categoriesSlugs = Array.isArray(cat) ? cat : [cat];
let allCategories = [];
let categoriesIds = [];
let selector = {};
let slugs;
if (cat.length) {
if (typeof cat === 'string') { // cat is a string
selector = {slug: cat};
slugs = [cat];
} else if (Array.isArray(cat)) { // cat is an array
selector = {slug: {$in: cat}};
slugs = cat;
// get all categories
// note: specify all arguments, see https://github.com/apollographql/apollo-client/issues/2051
const query = `
query GetCategories($terms: JSON) {
CategoriesList(terms: $terms) {
_id
slug
}
}
`
if (Meteor.isClient) {
// get categories from Redux store
allCategories = apolloClient.readQuery({
query: gql`${query}`,
variables: {terms: {limit: 0, itemsPerPage: 0}}
}).CategoriesList;
} else {
// get categories through GraphQL API using runQuery
const results = await runQuery(query);
allCategories = results.data.CategoriesList;
}
// TODO: use new Apollo imperative API
// get all categories passed in terms
const categories = Meteor.isClient ? _.filter(getCategories(apolloClient), category => _.contains(slugs, category.slug) ) : Categories.find(selector).fetch();
// for each category, add its ID and the IDs of its children to categoriesId array
categories.forEach(function (category) {
categoriesIds.push(category._id);
// TODO: find a better way to handle child categories
// categoriesIds = categoriesIds.concat(_.pluck(Categories.getChildren(category), '_id'));
});
// get corresponding category ids
const categoriesIds = _.pluck(_.filter(allCategories, category => _.contains(categoriesSlugs, category.slug)), '_id');
const operator = getSetting('forum.categoriesFilter', 'union') === 'union' ? '$in' : '$all';
parameters.selector = Meteor.isClient ? {...parameters.selector, 'categories._id': {$in: categoriesIds}} : {...parameters.selector, categories: {[operator]: categoriesIds}};
// parameters.selector = Meteor.isClient ? {...parameters.selector, 'categories._id': {$in: categoriesIds}} : {...parameters.selector, categories: {[operator]: categoriesIds}};
parameters.selector = {...parameters.selector, categories: {[operator]: categoriesIds}};
}
return parameters;
}