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28 lines
765 B
28 lines
765 B
9 years ago
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var types_helper = require( '../helper/types' );
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/**
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* Validate the types specified to be searched.
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*
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* Elasticsearch interprets an empty array of types as "search anything" rather
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* than "search nothing", so in the case of an empty array, return an error
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* message instead of searching at all.
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*/
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function middleware(req, res, next) {
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var types = types_helper(req.clean.types);
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if (types !== undefined && types.length !== undefined) {
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if (types.length === 0) {
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var err = 'You have specified both the `source` and `layers` ' +
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'parameters in a combination that will return no results.';
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res.status(400); // 400 Bad Request
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return next(err);
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} else {
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req.clean.type = types;
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}
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}
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next();
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}
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module.exports = middleware;
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