120 lines
3.8 KiB
Markdown
120 lines
3.8 KiB
Markdown
# Request Data
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When an endpoint receives a HTTP request, the route function is passed a
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`Request` object.
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The following variables are accessible as properties on `Request` objects:
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- `json` (any) - JSON body
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```python
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from sanic.response import json
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@app.route("/json")
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def post_json(request):
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return json({ "received": True, "message": request.json })
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```
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- `args` (dict) - Query string variables. A query string is the section of a
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URL that resembles `?key1=value1&key2=value2`. If that URL were to be parsed,
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the `args` dictionary would look like `{'key1': ['value1'], 'key2': ['value2']}`.
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The request's `query_string` variable holds the unparsed string value.
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```python
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from sanic.response import json
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@app.route("/query_string")
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def query_string(request):
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return json({ "parsed": True, "args": request.args, "url": request.url, "query_string": request.query_string })
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```
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- `raw_args` (dict) - On many cases you would need to access the url arguments in
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a less packed dictionary. For same previous URL `?key1=value1&key2=value2`, the
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`raw_args` dictionary would look like `{'key1': 'value1', 'key2': 'value2'}`.
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- `files` (dictionary of `File` objects) - List of files that have a name, body, and type
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```python
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from sanic.response import json
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@app.route("/files")
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def post_json(request):
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test_file = request.files.get('test')
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file_parameters = {
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'body': test_file.body,
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'name': test_file.name,
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'type': test_file.type,
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}
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return json({ "received": True, "file_names": request.files.keys(), "test_file_parameters": file_parameters })
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```
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- `form` (dict) - Posted form variables.
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```python
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from sanic.response import json
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@app.route("/form")
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def post_json(request):
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return json({ "received": True, "form_data": request.form, "test": request.form.get('test') })
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```
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- `body` (bytes) - Posted raw body. This property allows retrieval of the
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request's raw data, regardless of content type.
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```python
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from sanic.response import text
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@app.route("/users", methods=["POST",])
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def create_user(request):
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return text("You are trying to create a user with the following POST: %s" % request.body)
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```
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- `ip` (str) - IP address of the requester.
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- `app` - a reference to the Sanic application object that is handling this request. This is useful when inside blueprints or other handlers in modules that do not have access to the global `app` object.
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```python
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from sanic.response import json
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from sanic import Blueprint
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bp = Blueprint('my_blueprint')
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@bp.route('/')
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async def bp_root(request):
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if request.app.config['DEBUG']:
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return json({'status': 'debug'})
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else:
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return json({'status': 'production'})
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```
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- `url`: The full URL of the request, ie: `http://localhost:8000/posts/1/?foo=bar`
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- `scheme`: The URL scheme associated with the request: `http` or `https`
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- `host`: The host associated with the request: `localhost:8080`
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- `path`: The path of the request: `/posts/1/`
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- `query_string`: The query string of the request: `foo=bar` or a blank string `''`
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- `uri_template`: Template for matching route handler: `/posts/<id>/`
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## Accessing values using `get` and `getlist`
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The request properties which return a dictionary actually return a subclass of
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`dict` called `RequestParameters`. The key difference when using this object is
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the distinction between the `get` and `getlist` methods.
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- `get(key, default=None)` operates as normal, except that when the value of
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the given key is a list, *only the first item is returned*.
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- `getlist(key, default=None)` operates as normal, *returning the entire list*.
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```python
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from sanic.request import RequestParameters
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args = RequestParameters()
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args['titles'] = ['Post 1', 'Post 2']
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args.get('titles') # => 'Post 1'
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args.getlist('titles') # => ['Post 1', 'Post 2']
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```
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