python - Sqlalchemy: Purpose of .all() -
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what use of .all(). when following function
def showrestaurants(): restaurants = session.query(restaurant) return render_template('restaurant.html',restaurants=restaurants) returns same result function
def showrestaurants(): restaurants = session.query(restaurant).all() return render_template('restaurant.html',restaurants=restaurants) for restaurant.html file
<html> <body> <h1> restaurants </h1> {% x in restaurants %} </br> {% endfor %} </body> </html>
first example returns query object , can apply additional methods on it, such all() - return results represented query list.
query object works on each row before give it, while second works on rows, before starting give them.
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