salix/modules/entry/back/methods/entry/editLatestBuys.js

module.exports = Self => {
    Self.remoteMethod('editLatestBuys', {
        description: 'Updates a column for one or more buys',
        accessType: 'WRITE',
        accepts: [{
            arg: 'field',
            type: 'String',
            required: true,
            description: `the column to edit`
        },
        {
            arg: 'newValue',
            type: 'Any',
            required: true,
            description: `The new value to save`
        },
        {
            arg: 'lines',
            type: ['Object'],
            required: true,
            description: `the buys which will be modified`
        }],
        returns: {
            type: 'Object',
            root: true
        },
        http: {
            path: `/editLatestBuys`,
            verb: 'POST'
        }
    });

    Self.editLatestBuys = async(field, newValue, lines, options) => {
        let tx;
        const myOptions = {};

        if (typeof options == 'object')
            Object.assign(myOptions, options);

        if (!myOptions.transaction) {
            tx = await Self.beginTransaction({});
            myOptions.transaction = tx;
        }

        let modelName;
        let identifier;

        switch (field) {
        case 'size':
        case 'density':
        case 'description':
        case 'packingOut':
            modelName = 'Item';
            identifier = 'itemFk';
            break;
        case 'packing':
        case 'grouping':
        case 'groupingMode':
        case 'packageValue':
        case 'weight':
            modelName = 'Buy';
            identifier = 'id';
        }

        const models = Self.app.models;
        const model = models[modelName];

        try {
            const promises = [];

            const targets = lines.map(line => {
                return line[identifier];
            });

            const value = {};
            value[field] = newValue;

            for (let target of targets)
                promises.push(model.upsertWithWhere({id: target}, value, myOptions));

            const result = await Promise.all(promises);

            if (tx) await tx.commit();

            return result;
        } catch (e) {
            if (tx) await tx.rollback();
            throw e;
        }
    };
};