2019-08-08 14:30:43 +02:00

602 lines
16 KiB
JavaScript

'use strict';
/**
* Implementation of model queries for bookshelf
*/
const _ = require('lodash');
const {
convertRestQueryParams,
buildQuery,
models: modelUtils,
} = require('strapi-utils');
module.exports = function createQueryBuilder({ model, modelKey, strapi }) {
/* Utils */
// association key
const assocKeys = model.associations.map(ast => ast.alias);
// group keys
const groupKeys = Object.keys(model.attributes).filter(key => {
return model.attributes[key].type === 'group';
});
const timestamps = _.get(model, ['options', 'timestamps'], []);
// Returns an object with relation keys only to create relations in DB
const pickRelations = values => {
return _.pick(values, assocKeys);
};
// keys to exclude to get attribute keys
const excludedKeys = assocKeys.concat(groupKeys);
// Returns an object without relational keys to persist in DB
const selectAttributes = values => {
return _.pickBy(values, (value, key) => {
if (Array.isArray(timestamps) && timestamps.includes(key)) {
return false;
}
return !excludedKeys.includes(key) && _.has(model.allAttributes, key);
});
};
const wrapTransaction = (fn, { transacting } = {}) => {
const db = strapi.connections[model.connection];
if (transacting) return fn(transacting);
return db.transaction(trx => fn(trx));
};
/**
* Find one entry based on params
*/
async function findOne(params, populate, { transacting } = {}) {
const primaryKey = params[model.primaryKey] || params.id;
if (primaryKey) {
params = {
[model.primaryKey]: primaryKey,
};
}
const entry = await model.forge(params).fetch({
withRelated: populate,
transacting,
});
return entry ? entry.toJSON() : null;
}
/**
* Find multiple entries based on params
*/
function find(params, populate, { transacting } = {}) {
const filters = convertRestQueryParams(params);
return model
.query(buildQuery({ model, filters }))
.fetchAll({
withRelated: populate,
transacting,
})
.then(results => results.toJSON());
}
/**
* Count entries based on filters
*/
function count(params = {}) {
const { where } = convertRestQueryParams(params);
return model.query(buildQuery({ model, filters: { where } })).count();
}
async function create(values, { transacting } = {}) {
const relations = pickRelations(values);
const data = selectAttributes(values);
const runCreate = async trx => {
// Create entry with no-relational data.
const entry = await model.forge(data).save(null, { transacting: trx });
await createGroups(entry, values, { transacting: trx });
return entry;
};
const entry = await wrapTransaction(runCreate, { transacting });
return model.updateRelations(
{ id: entry.id, values: relations },
{ transacting }
);
}
async function update(params, values, { transacting } = {}) {
const entry = await model.forge(params).fetch({ transacting });
if (!entry) {
const err = new Error('entry.notFound');
err.status = 404;
throw err;
}
// Extract values related to relational data.
const relations = pickRelations(values);
const data = selectAttributes(values);
const runUpdate = async trx => {
const updatedEntry =
Object.keys(data).length > 0
? await entry.save(data, {
transacting: trx,
method: 'update',
patch: true,
})
: entry;
await updateGroups(updatedEntry, values, { transacting: trx });
return updatedEntry;
};
await wrapTransaction(runUpdate, { transacting });
if (Object.keys(relations).length > 0) {
return model.updateRelations(
Object.assign(params, { values: relations }),
{ transacting }
);
}
return this.findOne(params, null, { transacting });
}
async function deleteOne(params, { transacting } = {}) {
const entry = await model.forge(params).fetch({ transacting });
if (!entry) {
const err = new Error('entry.notFound');
err.status = 404;
throw err;
}
const values = {};
model.associations.map(association => {
switch (association.nature) {
case 'oneWay':
case 'oneToOne':
case 'manyToOne':
case 'oneToManyMorph':
values[association.alias] = null;
break;
case 'manyWay':
case 'oneToMany':
case 'manyToMany':
case 'manyToManyMorph':
values[association.alias] = [];
break;
default:
}
});
await model.updateRelations({ ...params, values }, { transacting });
const runDelete = async trx => {
await deleteGroups(entry, { transacting: trx });
await model.forge(params).destroy({ transacting: trx, require: false });
return entry;
};
return wrapTransaction(runDelete, { transacting });
}
async function deleteMany(params, { transacting } = {}) {
const primaryKey = params[model.primaryKey] || params.id;
if (primaryKey) return deleteOne(params, { transacting });
const entries = await find(params, null, { transacting });
return await Promise.all(
entries.map(entry => deleteOne({ id: entry.id }, { transacting }))
);
}
function search(params, populate) {
// Convert `params` object to filters compatible with Bookshelf.
const filters = modelUtils.convertParams(modelKey, params);
return model
.query(qb => {
buildSearchQuery(qb, model, params);
if (filters.sort) {
qb.orderBy(filters.sort.key, filters.sort.order);
}
if (filters.start) {
qb.offset(_.toNumber(filters.start));
}
if (filters.limit) {
qb.limit(_.toNumber(filters.limit));
}
})
.fetchAll({
withRelated: populate,
});
}
function countSearch(params) {
return model
.query(qb => {
buildSearchQuery(qb, model, params);
})
.count();
}
async function createGroups(entry, values, { transacting }) {
if (groupKeys.length === 0) return;
const joinModel = model.groupsJoinModel;
const { foreignKey } = joinModel;
for (let key of groupKeys) {
const attr = model.attributes[key];
const { group, required = false, repeatable = false } = attr;
const groupModel = strapi.groups[group];
const createGroupAndLink = async ({ value, order }) => {
return strapi
.query(groupModel.uid)
.create(value, { transacting })
.then(group => {
return joinModel.forge().save(
{
[foreignKey]: entry.id,
group_type: groupModel.collectionName,
group_id: group.id,
field: key,
order,
},
{ transacting }
);
});
};
if (required === true && !_.has(values, key)) {
const err = new Error(`Group ${key} is required`);
err.status = 400;
throw err;
}
if (!_.has(values, key)) continue;
const groupValue = values[key];
if (repeatable === true) {
validateRepeatableInput(groupValue, { key, ...attr });
await Promise.all(
groupValue.map((value, idx) =>
createGroupAndLink({ value, order: idx + 1 })
)
);
} else {
validateNonRepeatableInput(groupValue, { key, ...attr });
if (groupValue === null) return;
await createGroupAndLink({ value: groupValue, order: 1 });
}
}
}
async function updateGroups(entry, values, { transacting }) {
if (groupKeys.length === 0) return;
const joinModel = model.groupsJoinModel;
const { foreignKey } = joinModel;
for (let key of groupKeys) {
// if key isn't present then don't change the current group data
if (!_.has(values, key)) continue;
const attr = model.attributes[key];
const { group, repeatable = false } = attr;
const groupModel = strapi.groups[group];
const groupValue = values[key];
const updateOrCreateGroupAndLink = async ({ value, order }) => {
// check if value has an id then update else create
if (_.has(value, groupModel.primaryKey)) {
return strapi
.query(groupModel.uid)
.update(
{
[groupModel.primaryKey]: value[groupModel.primaryKey],
},
value,
{ transacting }
)
.then(group => {
return joinModel
.forge()
.query({
where: {
[foreignKey]: entry.id,
group_type: groupModel.collectionName,
group_id: group.id,
field: key,
},
})
.save(
{
order,
},
{ transacting, patch: true, require: false }
);
});
}
// create
return strapi
.query(groupModel.uid)
.create(value, { transacting })
.then(group => {
return joinModel.forge().save(
{
[foreignKey]: entry.id,
group_type: groupModel.collectionName,
group_id: group.id,
field: key,
order,
},
{ transacting }
);
});
};
if (repeatable === true) {
validateRepeatableInput(groupValue, { key, ...attr });
await deleteOldGroups(entry, groupValue, {
key,
joinModel,
groupModel,
transacting,
});
await Promise.all(
groupValue.map((value, idx) => {
return updateOrCreateGroupAndLink({ value, order: idx + 1 });
})
);
} else {
validateNonRepeatableInput(groupValue, { key, ...attr });
await deleteOldGroups(entry, groupValue, {
key,
joinModel,
groupModel,
transacting,
});
if (groupValue === null) return;
await updateOrCreateGroupAndLink({ value: groupValue, order: 1 });
}
}
return;
}
async function deleteOldGroups(
entry,
groupValue,
{ key, joinModel, groupModel, transacting }
) {
const groupArr = Array.isArray(groupValue) ? groupValue : [groupValue];
const idsToKeep = groupArr
.filter(el => _.has(el, groupModel.primaryKey))
.map(el => el[groupModel.primaryKey].toString());
const allIds = await joinModel
.forge()
.query(qb => {
qb.where(joinModel.foreignKey, entry.id).andWhere('field', key);
})
.fetchAll({ transacting })
.map(el => el.get('group_id').toString());
// verify the provided ids are realted to this entity.
idsToKeep.forEach(id => {
if (!allIds.includes(id)) {
const err = new Error(
`Some of the provided groups in ${key} are not related to the entity`
);
err.status = 400;
throw err;
}
});
const idsToDelete = _.difference(allIds, idsToKeep);
if (idsToDelete.length > 0) {
await joinModel
.forge()
.query(qb => qb.whereIn('group_id', idsToDelete))
.destroy({ transacting, require: false });
await strapi
.query(groupModel.uid)
.delete(
{ [`${groupModel.primaryKey}_in`]: idsToDelete },
{ transacting }
);
}
}
async function deleteGroups(entry, { transacting }) {
if (groupKeys.length === 0) return;
const joinModel = model.groupsJoinModel;
const { foreignKey } = joinModel;
for (let key of groupKeys) {
const attr = model.attributes[key];
const { group } = attr;
const groupModel = strapi.groups[group];
const ids = await joinModel
.forge()
.query({
where: {
[foreignKey]: entry.id,
group_type: groupModel.collectionName,
field: key,
},
})
.fetchAll({ transacting })
.map(el => el.get('group_id'));
await strapi
.query(groupModel.uid)
.delete({ [`${groupModel.primaryKey}_in`]: ids }, { transacting });
await joinModel
.forge()
.query({
where: {
[foreignKey]: entry.id,
group_type: groupModel.collectionName,
field: key,
},
})
.destroy({ transacting, require: false });
}
}
return {
findOne,
find,
create,
update,
delete: deleteMany,
count,
search,
countSearch,
};
};
/**
* util to build search query
* @param {*} qb
* @param {*} model
* @param {*} params
*/
const buildSearchQuery = (qb, model, params) => {
const query = (params._q || '').replace(/[^a-zA-Z0-9.-\s]+/g, '');
const associations = model.associations.map(x => x.alias);
const searchText = Object.keys(model._attributes)
.filter(
attribute =>
attribute !== model.primaryKey && !associations.includes(attribute)
)
.filter(attribute =>
['string', 'text'].includes(model._attributes[attribute].type)
);
const searchInt = Object.keys(model._attributes)
.filter(
attribute =>
attribute !== model.primaryKey && !associations.includes(attribute)
)
.filter(attribute =>
['integer', 'decimal', 'float'].includes(
model._attributes[attribute].type
)
);
const searchBool = Object.keys(model._attributes)
.filter(
attribute =>
attribute !== model.primaryKey && !associations.includes(attribute)
)
.filter(attribute =>
['boolean'].includes(model._attributes[attribute].type)
);
if (!_.isNaN(_.toNumber(query))) {
searchInt.forEach(attribute => {
qb.orWhere(attribute, _.toNumber(query));
});
}
if (query === 'true' || query === 'false') {
searchBool.forEach(attribute => {
qb.orWhere(attribute, _.toNumber(query === 'true'));
});
}
// Search in columns with text using index.
switch (model.client) {
case 'mysql':
qb.orWhereRaw(
`MATCH(${searchText.join(',')}) AGAINST(? IN BOOLEAN MODE)`,
`*${query}*`
);
break;
case 'pg': {
const searchQuery = searchText.map(attribute =>
_.toLower(attribute) === attribute
? `to_tsvector(${attribute})`
: `to_tsvector('${attribute}')`
);
qb.orWhereRaw(`${searchQuery.join(' || ')} @@ to_tsquery(?)`, query);
break;
}
}
};
function validateRepeatableInput(value, { key, min, max }) {
if (!Array.isArray(value)) {
const err = new Error(`Group ${key} is repetable. Expected an array`);
err.status = 400;
throw err;
}
value.forEach(val => {
if (typeof val !== 'object' || Array.isArray(val) || val === null) {
const err = new Error(
`Group ${key} as invalid items. Expected each items to be objects`
);
err.status = 400;
throw err;
}
});
if (min && value.length < min) {
const err = new Error(`Group ${key} must contain at least ${min} items`);
err.status = 400;
throw err;
}
if (max && value.length > max) {
const err = new Error(`Group ${key} must contain at most ${max} items`);
err.status = 400;
throw err;
}
}
function validateNonRepeatableInput(value, { key, required }) {
if (typeof value !== 'object' || Array.isArray(value)) {
const err = new Error(`Group ${key} should be an object`);
err.status = 400;
throw err;
}
if (required === true && value === null) {
const err = new Error(`Group ${key} is required`);
err.status = 400;
throw err;
}
}