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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Trying to list merge requests containing specific approver_ids returns an exception","articleBody":"## Description of the problem, including code/CLI snippet\r\nI am trying to list merge requests which contain a certain approver ID. As per https://docs.gitlab.com/ee/api/merge_requests.html#list-merge-requests this should be doable via:\r\n```\r\ngl.mergerequests.list(approver_ids=[1])\r\n```\r\nCalling that code raises the following exception (GitLab EE):\r\n```\r\nTraceback (most recent call last):\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/exceptions.py\", line 267, in wrapped_f\r\n    return f(*args, **kwargs)\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/mixins.py\", line 141, in list\r\n    obj = self.gitlab.http_list(path, **data)\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/__init__.py\", line 648, in http_list\r\n    return list(GitlabList(self, url, query_data, get_next=False, **kwargs))\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/__init__.py\", line 771, in __init__\r\n    self._query(url, query_data, **kwargs)\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/__init__.py\", line 776, in _query\r\n    result = self._gl.http_request(\"get\", url, query_data=query_data, **kwargs)\r\n  File \"/venv/lib/python3.7/site-packages/gitlab/__init__.py\", line 572, in http_request\r\n    response_body=result.content,\r\ngitlab.exceptions.GitlabHttpError: 400: approver_ids should be an array, 'None' or 'Any'\r\n```\r\nIn the gitlab server logs I see the following:\r\n```\r\n\"GET /api/v4/merge_requests?approver_ids=1 HTTP/1.1\" 400 60 \"-\" \"python-gitlab/2.0.1\" \"-\"\r\n```\r\n\r\n## Expected Behavior\r\nReturn merge requests for the specified approver_ids.\r\n\r\n## Actual Behavior\r\nRaises an exception.\r\n\r\n## Specifications\r\n\r\n  - python-gitlab version: 2.0.1\r\n  - API version you are using (v3/v4): v4\r\n  - Gitlab server version (or gitlab.com):  12.7.5-ee\r\n","author":{"url":"https://github.com/sim0nx","@type":"Person","name":"sim0nx"},"datePublished":"2020-02-10T09:34:16.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/1010/python-gitlab/issues/1010"}