StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POHow to add foreign key value in insert query - mysql - CodeIgniter
primarykey
Id
14060516
data
AcceptedAnswerId
14060572
AnswerCount
1
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-12-27T19:56:35.037
FavoriteCount
0
LastActivityDate
2012-12-27T20:44:48.507
LastEditDate
2012-12-27T20:32:20.927
LastEditorUserId
1248009
OwnerUserId
1248009
ParentId
0
PostTypeId
1
Score
0
ViewCount
4479
LastEditorDisplayName
text
Body
I have the following insert query: <pre><code>$salarystuff = array('salary' => $salary, 'from_date' => $salary_from_date, 'to_date' => $salary_to_date); $this->db->insert('salaries', $salarystuff); </code></pre> The salary table has columns: emp_no| salary| from_date| to_date (I'm using the database available from dev.mysql.com. But it gives me an error 1452 saying foreign key constraint. How do I reference to the key value in the other table to be able to insert into this table? This is the error message: <blockquote> Cannot add or update a child row: a foreign key constraint fails (<code>employees</code>.<code>salaries</code>, CONSTRAINT <code>salaries_ibfk_1</code> FOREIGN KEY (<code>emp_no</code>) REFERENCES <code>employees</code> (<code>emp_no</code>) ON DELETE CASCADE) INSERT INTO <code>salaries</code> (<code>salary</code>, <code>from_date</code>, <code>to_date</code>) VALUES ('1000000', '2012-12-27', '2013-01-16') </blockquote> Thank you edit: I'm trying the following First I create the record in the employees table using this function: <pre><code>function add_emp($firstname,$lastname,$gender,$date_of_birth,$jobtitle,$dept,$hiredate) { $data = array( 'first_name' => $firstname, 'last_name' => $lastname, 'gender' => $gender, 'birth_date' => $date_of_birth, 'hire_date' => $hiredate); $this->db->trans_start(); $this->db->insert('employees', $data); $this->db->trans_complete(); if ($this->db->trans_status() === FALSE) { $msg = "Adding the new employee failed."; return $msg; } else { $msg = "Successfully Added Employee."; return $msg; } } </code></pre> and then in another function I add the salary: <pre><code>function add_salary($firstname,$lastname,$gender,$date_of_birth,$jobtitle,$dept,$hiredate,$salary, $salary_from_date,$salary_to_date) { $this->db->select('emp_no'); $this->db->from('employees'); $this->db->where('first_name', $firstname); $this->db->where('last_name', $lastname); $this->db->where('gender', $gender); $this->db->where('hire_date', $hiredate); $this->db->where('birth_date', $date_of_birth); $this->db->limit(1); $selected_employee = $this->db->get(); $salarystuff = array('emp_no' => $selected_employee, 'salary' => $salary, 'from_date' => $salary_from_date, 'to_date' => $salary_to_date); $this->db->insert('salaries', $salarystuff); } </code></pre> both of which are in the model. Then in the controller I call both functions: $employee_insert = $this->user->add_emp($firstname,$lastname,$gender,$date_of_birth, <pre><code>$jobtitle,$dept, $hiredate); $salarythings = $this->user->add_salary($firstname,$lastname,$gender,$date_of_birth,$jobtitle,$dept,$hiredate,$salary, $salary_from_date,$salary_to_date); </code></pre> But I get an error because there is no value in the emp_no field...I think it might be the line: <pre><code>$selected_employee = $this->db->get(); $salarystuff = array('emp_no' => $selected_employee, </code></pre> My error message is: <blockquote> Object of class CI_DB_mysql_result could not be converted to string </blockquote>
Tags
<mysql><codeigniter><foreign-keys>
Title
How to add foreign key value in insert query - mysql - CodeIgniter
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USa7omiton
UserOwnerUserId
1. USa7omiton
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.