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CRUD Operations with PHP

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Updating Tasks

5:40 with Alena Holligan

We're all human, and as humans, we all make mistakes. Updating allows us to fix mistakes or make any other changes that may occur.

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Modifying Data with SQL: Updating All Rows in a Table

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    Now that our projects allow us to update details, 0:00
    let's make those same changes to our tasks. 0:02
    Let's start in functions.php and update the add_task function. 0:05
    First we need to accept the optional task id. 0:10
    Then we can check for that id to see if we're going to add or update the task. 0:15
    If our task_id is set, then we're going to update. 0:21
    sql equals UPDATE our tasks. 0:27
    We'll set our project_id. 0:35
    Title. 0:40
    Date And time. 0:43
    Where task ID Else, 0:52
    we're going to be using the Insert. 1:01
    Once again the update statement has one more place holder than the insert 1:08
    statement. 1:11
    So let's add another bind value. 1:13
    If ($task_id) bindValue(5, 1:19
    equals our $task_id. 1:28
    We also need to be able to get our task details. 1:34
    So let's copy the get_project function. 1:37
    We'll rename project to task. 1:46
    Let's also rewrite our SELECT statement to pull fields in the order we specify. 2:05
    This will be helpful when pulling those results. 2:19
    Our functions are ready, so let's add the link in our task list page. 2:22
    To our list item we add a href 2:26
    = task.php?id= then we 2:31
    use our item $task_id. 2:36
    And then finish off our a tag. 2:47
    Finally we're ready to update our task page. 2:51
    Let's copy of the getID conditional from the project page. 2:57
    Let's update the list function to use all the task details. 3:07
    Task_id, title, date, time and project_id. 3:14
    Then we use get_task, and keep our filter input the same. 3:22
    Now we add the task_id to the POST condition. 3:29
    Remember this is a number int. 3:50
    Then we can use that task_id to pass to our add_task function. 3:55
    Next we'll update our header text to show for adding or updating a task. 4:09
    If !empty($task_id). 4:21
    Then we're updating. 4:28
    Else we're adding. 4:35
    Finally, we need to add the hidden field to the form. 4:46
    Let's copy the code from the project.php file again. 4:49
    And change out project for task. 5:02
    Let's test out our work in a browser. 5:08
    Select Tasks and then choose My New Task. 5:14
    Let's update and Submit. 5:22
    Oops, let's go back and update the SQL statement. 5:26
    Update tasks. 5:32
    Let's try that again. 5:35
    Great work. 5:37
    Our task is updated. 5:38

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