symfony2-Create a submit form to generate data process

1. "One-to-many" relationship

Table shop (1)

Table comment (many)

Save shop_id

2. First, let’s manually generate shop and comment Relationship

The first case (can be generated)

controller

can generate a table, corresponding relationship

table shop

table: comment

Because The comments in the shop table here do not actually have a field in the shop table. It is just a mark to indicate that it is convenient to retrieve comments. For example, $shop->getComments(); is also convenient when adding comments.

Second case (cannot be generated)

What if the addComments function is changed

Cannot generate table correspondence

Table: shop

Table: comment

Why?

Because the comment table id is not associated with the shop (that is, the shop id is not stored in the real comment table)

The third situation: (table relationships can be generated)

table : shop

table: comment

directly add shop

to the comment

Okay, in fact, there is also "many-to-many" "relation?

How to automatically generate a one-to-many relationship when submitting a table?

Let’s talk about it next time

The above introduces the process of symfony2-creating a submission form to generate data, including aspects of the process. I hope it will be helpful to friends who are interested in PHP tutorials.