2021-03-12 17:56:38 +01:00

234 lines
6.7 KiB
JavaScript

'use strict';
const _ = require('lodash');
const {
bindPopulateQueries,
extendWithPopulateQueries,
queryOptionsToQueryMap,
} = require('./utils/populate-queries');
const { getComponentAttributes, isComponent } = require('./utils/attributes');
const { isPolymorphic } = require('./utils/associations');
/**
* Create utilities to populate a model on fetch
*/
const populateFetch = (definition, options) => {
// do not populate anything
if (options.withRelated === false) return;
if (options.isEager === true) return;
if (_.isNil(options.withRelated)) {
options.withRelated = []
.concat(populateComponents(definition, options))
.concat(populateAssociations(definition, options));
} else if (_.isEmpty(options.withRelated)) {
options.withRelated = populateComponents(definition, options);
} else {
options.withRelated = []
.concat(formatPopulateOptions(definition, options))
.concat(populateComponents(definition, options));
}
};
const populateAssociations = (definition, options = {}) => {
return definition.associations
.filter(ast => ast.autoPopulate !== false)
.map(assoc => {
if (isPolymorphic({ assoc })) {
return formatPolymorphicPopulate({ assoc }, options);
}
return formatAssociationPopulate({ assoc }, options);
})
.reduce((acc, val) => acc.concat(val), []);
};
const populateBareAssociations = (definition, options = {}) => {
const { prefix = '', ...queryOptions } = options;
return (definition.associations || [])
.filter(ast => ast.autoPopulate !== false)
.map(assoc => {
if (isPolymorphic({ assoc })) {
return formatPolymorphicPopulate({ assoc }, options);
}
const path = `${prefix}${assoc.alias}`;
const assocModel = strapi.db.getModelByAssoc(assoc);
const populateOptions = bindPopulateQueries(
[path],
queryOptionsToQueryMap(queryOptions, { model: assocModel })
);
const polyAssocs = assocModel.associations
.filter(assoc => isPolymorphic({ assoc }))
.map(assoc => {
return formatPolymorphicPopulate({ assoc }, { prefix: `${path}.`, ...queryOptions });
});
return [populateOptions, ...polyAssocs];
})
.reduce((acc, val) => acc.concat(val), []);
};
const formatAssociationPopulate = ({ assoc }, options = {}) => {
const { prefix = '', ...queryOptions } = options;
const path = `${prefix}${assoc.alias}`;
const assocModel = strapi.db.getModelByAssoc(assoc);
const polyAssocs = assocModel.associations
.filter(polyAssoc => isPolymorphic({ assoc: polyAssoc }))
.map(polyAssoc => {
return formatPolymorphicPopulate(
{ assoc: polyAssoc },
{ prefix: `${path}.`, ...queryOptions }
);
});
const components = populateComponents(assocModel, { prefix: `${path}.`, ...queryOptions });
const populateOpts = bindPopulateQueries(
[path],
queryOptionsToQueryMap(queryOptions, { model: assocModel })
);
return [populateOpts, ...polyAssocs, ...components];
};
const populateComponents = (definition, options = {}) => {
return getComponentAttributes(definition)
.map(key => {
const attribute = definition.attributes[key];
const autoPopulate = _.get(attribute, ['autoPopulate'], true);
if (autoPopulate === true) {
return populateComponent(key, attribute, options);
}
})
.reduce((acc, val) => acc.concat(val), []);
};
const populateComponent = (key, attr, options = {}) => {
const { prefix = '', ...queryOptions } = options;
const path = `${prefix}${key}.component`;
const componentPrefix = `${path}.`;
if (attr.type === 'dynamiczone') {
const componentKeys = attr.components;
return componentKeys.reduce((acc, key) => {
const component = strapi.components[key];
const assocs = populateBareAssociations(component, {
prefix: componentPrefix,
...queryOptions,
});
const components = populateComponents(component, {
prefix: componentPrefix,
...queryOptions,
});
return acc.concat([path, ...assocs, ...components]);
}, []);
}
const component = strapi.components[attr.component];
const assocs = populateBareAssociations(component, { prefix: componentPrefix, ...queryOptions });
const components = populateComponents(component, { prefix: componentPrefix, ...queryOptions });
return [path, ...assocs, ...components];
};
const formatPopulateOptions = (definition, { withRelated, ...queryOptions } = {}) => {
if (!Array.isArray(withRelated)) withRelated = [withRelated];
const obj = withRelated.reduce((acc, key) => {
if (_.isString(key)) {
acc[key] = () => {};
return acc;
}
return _.extend(acc, key);
}, {});
const finalObj = Object.keys(obj).reduce((acc, key) => {
// check the key path and update it if necessary
const parts = key.split('.');
let newKey;
let prefix = '';
let tmpModel = definition;
for (let part of parts) {
const attr = tmpModel.attributes[part];
if (isComponent(tmpModel, part)) {
if (attr.type === 'dynamiczone') {
newKey = `${prefix}${part}.component`;
break;
}
tmpModel = strapi.components[attr.component];
// add component path and there relations / images
newKey = `${prefix}${part}.component`;
prefix = `${newKey}.`;
continue;
}
const assoc = tmpModel.associations.find(association => association.alias === part);
if (!assoc) return acc;
tmpModel = strapi.db.getModelByAssoc(assoc);
if (isPolymorphic({ assoc })) {
const path = formatPolymorphicPopulate({ assoc }, { prefix, ...queryOptions });
return _.extend(acc, path);
}
newKey = `${prefix}${part}`;
prefix = `${newKey}.`;
_.extend(acc, {
[newKey]: extendWithPopulateQueries(
[obj[newKey], acc[newKey]],
queryOptionsToQueryMap(queryOptions, { model: tmpModel })
),
});
}
return acc;
}, {});
return [finalObj];
};
const defaultOrderBy = qb => qb.orderBy('created_at', 'desc');
const formatPolymorphicPopulate = ({ assoc }, options = {}) => {
const { prefix = '', ...queryOptions } = options;
const model = strapi.db.getModelByAssoc(assoc);
const queryMap = queryOptionsToQueryMap(queryOptions, { model });
// MorphTo side.
if (assoc.related) {
return bindPopulateQueries([`${prefix}${assoc.alias}.related`], queryMap);
}
// oneToMorph or manyToMorph side.
// Retrieve collection name because we are using it to build our hidden model.
const path = `${prefix}${assoc.alias}.${model.collectionName}`;
return {
[path]: extendWithPopulateQueries([defaultOrderBy], queryMap),
};
};
module.exports = populateFetch;