get_post() — flask Function Reference

Architecture documentation for the get_post() function in blog.py from the flask codebase.

Function python ApplicationCore ExtensionRegistry calls 1 called by 2

Entity Profile

ApplicationCore→ ExtensionRegistry→ get_post() — flask Function Reference

Dependency Diagram

graph TD
  ba537604_373f_16e2_0f76_bee43f343f15["get_post()"]
  bf08e60d_e030_cf15_e246_1de85afd9b5e["blog.py"]
  ba537604_373f_16e2_0f76_bee43f343f15 -->|defined in| bf08e60d_e030_cf15_e246_1de85afd9b5e
  fe77837e_4ce8_4387_7787_f2c57dfffbd4["update()"]
  fe77837e_4ce8_4387_7787_f2c57dfffbd4 -->|calls| ba537604_373f_16e2_0f76_bee43f343f15
  0ed96e73_8dd2_07eb_7979_5188239e570c["delete()"]
  0ed96e73_8dd2_07eb_7979_5188239e570c -->|calls| ba537604_373f_16e2_0f76_bee43f343f15
  adc04a87_eacf_cc39_8808_98d7d38c7044["get_db()"]
  ba537604_373f_16e2_0f76_bee43f343f15 -->|calls| adc04a87_eacf_cc39_8808_98d7d38c7044
  style ba537604_373f_16e2_0f76_bee43f343f15 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

examples/tutorial/flaskr/blog.py lines 28–57

def get_post(id, check_author=True):
    """Get a post and its author by id.

    Checks that the id exists and optionally that the current user is
    the author.

    :param id: id of post to get
    :param check_author: require the current user to be the author
    :return: the post with author information
    :raise 404: if a post with the given id doesn't exist
    :raise 403: if the current user isn't the author
    """
    post = (
        get_db()
        .execute(
            "SELECT p.id, title, body, created, author_id, username"
            " FROM post p JOIN user u ON p.author_id = u.id"
            " WHERE p.id = ?",
            (id,),
        )
        .fetchone()
    )

    if post is None:
        abort(404, f"Post id {id} doesn't exist.")

    if check_author and post["author_id"] != g.user["id"]:
        abort(403)

    return post