python - Call a function when Flask session expires -

-

in flask application, saving files correspond user, , want delete these files when user's "session" expires. possible detect session expiration , call function?

yeah kind of possible run loop see until session['key']==none , if condition becomes true call function. hope helps!!!


Comments

Post a Comment

Popular posts from this blog

c++ - list<myClass<int> * > sort -

-
i cannot sort list contains pointers objects of template class. template class node{ public: node(void){} node(t choice, vector<t> & data); node(t choice, vector<t> & data, player p, int level, int pos, node<t> *pred, side); void addnodes(void); static list<node<t> * > nodes; friend class mybinomialtree<node<t>, t>; bool sorter(const node<t> * lhs, const node<t> * rhs);// * &lhs doesn't work private: node<t> * left; node<t> * right; t chosen_; vector<t> data_; bool isleaf; //... }; outside class: template<class t> bool node<t>::sorter(const node<t> * lhs, const node<t> * rhs){ if((*lhs).level_==(*rhs).level_){ return (*lhs).pos_<(*rhs).pos_; }else{ return (*lhs).level_<(*rhs).level_; } } and want sort before print, have template<class t> void node<t>::print(void){ ...
Read more

How to populate a bash array with a file's lines -

-
populating array file should basic, can't work. #!/bin/bash declare -a i=0 cat "file.txt" | while read line; a[$i]="$line" i=$(($i + 1)) done echo "${a[0]}" this prints empty line. file contains lines "foo" , "bar", here's output bash -x: + declare -a + i=0 + cat file.txt + read line + a[$i]=foo + i=1 + read line + a[$i]=bar + i=2 + read line + echo '' i can't readarray builtin working: #!/bin/bash declare -a b cat "file.txt" | readarray b echo "${b[0]}" + declare -a b + cat file.txt + readarray b + echo '' what doing wrong here? this basic bash pitfall: segments of pipeline execute in subshells default, means whatever variables create go out of scope when these subshells terminate (the current shell won't see them). depending on version of b...
Read more

sql server - database first change primary key from int to uniqueidentifier -

-
i trying change primary key in 1 of tables int uniqueidentifier. pointed out in title, taking database first approach using entity framework. the process took remove primary key table in sql designer , renamed column "itemid" "item". i created column named "itemid" , set uniqueidentifier type default newsequentialid(). then deleted column renamed "item" , set "itemid" primary key. i moved visual studio , did update model database gave me error error 1 error 2019: member mapping specified not valid. type 'edm.int32[nullable=false,defaultvalue=]' of member 'itemid' in type 'shoppingmodel.dbfruits' not compatible 'sqlserver.uniqueidentifier[nullable=false,defaultvalue=,storegeneratedpattern=identity]' of member 'itemid' in type 'shoppingmodel.store.dbfruits'. and here model under .tt directory public partial class dbfruits { public dbfruits() { thi...
Read more