Function param

lib/extend/context.js:167–196

* get or set query data * `query` or `get` is already used in koa * @param {String} name * @param {Mixed} value

(name, value)

   * @param {Mixed} value
   */
  param(name, value) {
    if (!this[PARAM]) {
      this[PARAM] = Object.assign({}, this.request._query || this.request.query);
      this.app.emit('filterParam', this[PARAM]);
    }
    if (!name) return this[PARAM];
    if (helper.isObject(name)) {
      this[PARAM] = Object.assign(this[PARAM], name);
      return this;
    }
    if (value === undefined) {
      // this.param('a,b')
      if (helper.isString(name) && name.indexOf(',') > -1) {
        name = name.split(/\s*,\s*/);
      }
      if (helper.isArray(name)) {
        const value = {};
        name.forEach(item => {
          const val = this[PARAM][item];
          if (val !== undefined) {
            value[item] = val;
          }
        });
        return value;
      }
      return this[PARAM][name];
    }
    this[PARAM][name] = value;
    return this;
  },
  /**
   * get or set post data
   * @param {String} name