Question

#include<iostream>
#include <list>

#define FINISHED -1
#define NOCYCLE -2
using namespace std;


class Graph
{
    int V;   
    int index;
    list<int> *adj;   
public:
    Graph(int V);   
    void addEdge(int v, int w);  
    void set_index();
    int Graph::isCyclicUtil(int v, bool visited[], int *cycleVertices, int parent);
};

Graph::Graph(int V)
{
    this->V = V;
    adj = new list<int>[V];
    this->index = 0;
}

void Graph::set_index()
{
    this->index = 0;
}

void Graph::addEdge(int v, int w)
{
    adj[v].push_back(w); 
    adj[w].push_back(v); 
}

int Graph::isCyclicUtil(int v, bool visited[], int *cycleVertices, int parent)
{
    visited[v] = true;

    list<int>::iterator i;
    for (i = adj[v].begin(); i != adj[v].end(); ++i)
    {
        if (!visited[*i])
        {
            int result = isCyclicUtil(*i, visited, cycleVertices, v);
            if (result == FINISHED)
                return FINISHED;
            else if (result != NOCYCLE) {
                cycleVertices[index++] = v;
                if (result == v)
                    return FINISHED;
                else
                    return result;
            }
        }

        else if (*i != parent) {
            return *i;
        }
    }
    return NOCYCLE;
}


int main()
{
    bool *visited = new bool[4];
    for (int i = 0; i < 4; i++)
        visited[i] = false;
    int cycleVertices[4];
    for (int i = 0; i < 4; i++)
        cycleVertices[i] = -1;
    Graph g1(4);
    g1.addEdge(0, 1);
    g1.addEdge(1, 2);
    g1.addEdge(2, 3);
    g1.addEdge(3, 0);
    g1.isCyclicUtil(3, visited, cycleVertices, -1) ? cout << "Graph contains cycle\n" :
        cout << "Graph doesn't contain cycle\n";
    int x = 0;
    while (cycleVertices[x] != -1)
        cout << cycleVertices[x++] << " ";
    return 0;
}

这些是关于商店和网格的配置。我通过ajax请求加载数据;

 var store = new Ext.data.JsonStore({
                root:           'details',
                fields: ['a1','a2','a3','a4','a5','a6','a7'],
                pruneModifiedRecords:true,
                autoload:       false
         });


         var gridDetail = new Ext.grid.Panel({
             title: 'Details',
             store: store,
             width : '100%',
             header: {
               titleAlign: 'center'
             },
             columns: [
                    { text: 'col1',  dataIndex: 'a1' },
                    { text: 'col2', dataIndex: 'a2'},
                    { text: 'col3', dataIndex: 'a3' },
                    { text: 'col4', dataIndex: 'a4' },
                    { text: 'col5', dataIndex: 'a5' },
                    { text: 'col6', dataIndex: 'a6' },
                    { text: 'col7', dataIndex: 'a7' },

                ],               
         });

我的返回JSON是;

{ “成功”：真， “第一”：[{...}，]， “详细信息”：[{ “A1”： “D1”， “A2”： “D2”，...“A7 “：” D7" }]}

但毕竟这并没有在网格上显示，也没有错误返回。一切都很好，但没有任何事情发生在网格中。显示的掩码然后未显示但网格上没有显示数据。

我的问题是什么，我看不到它？有人能帮助我吗？

Answer 1

似乎对我有好处。也许是数据格式的东西。

向商店添加一个监听器，以检查商店获得的记录类型。

listeners:{
     load: function( this, records, options ) {
        console.log(records);
     }
}

网格不显示任何数据

1 个答案: