Building data-driven web apps with Flask and SQLAlchemy Transcripts
Chapter: Using SQLAchemy
Lecture: Connecting to the database (again)
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Now what we're going to need to do
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is work with our SQLAlchemy engine
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and the factory and the connections and all that.
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And remember in order for that to work
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we have to go to our db_session.
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We have to initialize it.
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So let me just copy over a function here.
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This was just like the one we worked with before.
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So we're going to import os.
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import pypi.org
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and we can say that's spelled correctly.
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And we also want our db_session
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like so. And now it has this global_init.
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So, we just have to call this somewhere.
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Before we try to do anything, and just to remind you
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over here this sets up the connection string
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initializes the engine, and most importantly
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initializes this factory right here.
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So, what we're going to do is
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we're going to have a def main.
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Here this is going to be like our main startup.
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And in here we'll call global_init for the database.
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And we'll use our main convention at the bottom
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and just run the main function. Here we go.
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I guess we can go ahead and test it and see that it runs.
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Oh, it didn't like that. Let's just use
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this in here we'll just go up one.
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That should do. Okay, great.
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So here we're connecting to final, dah dah dah.
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It might even be worthwhile to say os.path.abspath.
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Here we go.
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Now we have the absolute path, in looks right to me.
